FUEL TECH, INC. - Annual Report: 2021 (Form 10-K)

TABLE OF DEFINED TERMS

PART I

Forward-Looking Statements

This Annual Report on Form 10-K contains “forward-looking statements,” as defined in Section 21E of the Securities Exchange Act of 1934, as amended, that are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and reflect our current expectations regarding our future growth, results of operations, cash flows, performance and business prospects, and opportunities, as well as assumptions made by, and information currently available to, our management. We have tried to identify forward-looking statements by using words such as “anticipate,” “believe,” “plan,” “expect,” “intend,” “will,” and similar expressions, but these words are not the exclusive means of identifying forward-looking statements. These statements are based on information currently available to us and are subject to various risks, uncertainties, and other factors, including, but not limited to, those discussed herein under the caption “Risk Factors” that could cause our actual growth, results of operations, financial condition, cash flows, performance and business prospects and opportunities to differ materially from those expressed in, or implied by, these statements. Except as expressly required by the federal securities laws, we undertake no obligation to update such factors or to publicly announce the results of any of the forward-looking statements contained herein to reflect future events, developments, or changed circumstances or for any other reason. Investors are cautioned that all forward-looking statements involve risks and uncertainties, including those detailed in our filings with the Securities and Exchange Commission. See “Risk Factors” in Item 1A.

ITEM 1 - BUSINESS

As used in this Annual Report on Form 10-K, the terms “we,” “us,” or “our,” refer to Fuel Tech, Inc. and our wholly owned subsidiaries.

GENERAL

We are a leading technology company engaged in the worldwide development, commercialization and application of state-of-the-art proprietary technologies for air pollution control, process optimization, water treatment and advanced engineering services. These technologies enable our customers to operate efficiently in a cost-effective and environmentally sustainable manner.

Many of our products and services rely heavily on our Computational Fluid Dynamics (CFD) and Chemical Kinetics Modeling (CKM) capabilities, which are enhanced by internally developed, high-end visualization software.  These capabilities, coupled with our innovative technologies and multi-disciplined team approach, enable us to provide practical solutions to some of our customers' most challenging issues.

AIR POLLUTION CONTROL (APC)

Regulations and Markets: Domestic

The future growth of our APC technology segment is dependent upon the adoption and enforcement of environmental regulations in the United States (U.S.) and globally. In the U.S., federal and state laws regulating the emission of NOx are the primary driver in our APC technology segment. The principal regulatory drivers currently in effect are as follows:

Clean Air Act (CAA): The CAA requires the U.S. Environmental Protection Agency (EPA) to establish national ambient air quality standards (NAAQS) at levels that are protective of public health with an adequate margin of safety. The six pollutants specified include: Ozone, Particulate Matter, Nitrogen Dioxide, Sulfur Dioxide, Lead, and Carbon Monoxide. The NAAQS provisions require that states comply with ozone and particulate emissions standards. NOx emissions are a precursor to ozone formation and also contribute to fine particulate emissions. Since 1990, EPA rules and programs have been established at the regional and federal level to help states in their mission to define and meet their State Implementation Plans for attainment. The NAAQS ground-level ozone standards that were issued in 1997, were made more stringent in 2008 and again in 2015. The EPA has kept the 2020 NAAQS ozone standard at 70 parts per billion, the same limit as 2015.

Clean Air Visibility Rule (CAVR): The CAVR, also known as the Regional Haze rule, is part of the Clean Air Act and was finalized in 2005. Under CAVR, certain States are required to submit implementation plans to the EPA to comply with the Regional Haze requirements, and updates are required every five years. A new CAVR was issued in January 2017 which requires states to implement new air pollution controls implementation plans in 2021 and 2022. NOx emissions contribute to ground level ozone which can contribute to localized haze, and many State Implementation Plans are addressing NOx reduction as part of CAVR compliance. The overall obligation of CAVR is to return the U.S. scenic areas to “active” visibility by 2064.

New Unit Permits:  New gas fired units for both electricity generation and industrial use will require Best Available Control Technology (BACT) as a permit requirement. SCR technology is very often BACT for NOx, and these permit requirements generate new market opportunities.

Consent Decrees: Consent decree activity through the U.S. Department of Justice or EPA may require emission sources to meet individual requirements. Sources may also agree to specific air pollution requirements with states or environmental groups.

Regulations and Markets: International

We also sell air pollution control systems outside the U.S., specifically in Europe, Latin America, India (under a license agreement) and in the Pacific Rim. The demand for our technologies comes from specific governmental regulations in NOx and particulate matter emission limits which vary by country. We expect that there will be further opportunities to implement our technologies globally in established as well as new geographies in 2022.

The European Union published the Best Available Reference Technology (BREF) emission guidelines in mid 2017 that further lowered emission targets over a span of the next four years. Next review is planned for 2022 where more stringent emission targets will be discussed. The 2017 BREF guidelines reduced NOx limit values by up to 25% which required an upgrade of the first-generation NOx abatement systems, and that has presented new opportunities for Fuel Tech, especially on biomass and waste incineration plants. The projects have been slow to implement due to the coronavirus (COVID-19) pandemic related restrictions and lock downs, however, the stalled projects are expected to move forward in 2022. The overall pace of BREF implementation will still be dependent on each country's internal processes. European engineering companies are also supplying systems to industrial and utility customers globally. Fuel Tech’s NOx control technologies can be integrated into these systems.

In South Africa, the state-owned utility Eskom is slowly refurbishing aging ESPs and adding FGC technology to further improve ESP performance. Fuel Tech is well placed to compete for this business with our local partner Lesedi.

The Indian government has adopted a higher NOx emission standard for legacy power plants than what was initially agreed to in 2015 as part of the Paris Agreement. As a result, SNCR systems will be limited to waste-to-energy and industrial units for the foreseeable future. Particulate matter emission reductions continue to be an area of focus in the country and that presents an ongoing opportunity for Fuel Tech’s FGC technology application which utilizes sulfur trioxide and ammonia injection. These technologies will be implemented through a collaboration with our local partner ISGEC.

Elsewhere in Southeast Asia, particulate emissions due to poor performing ESPs are being mitigated.  Power generators in several countries like Vietnam, Malaysia and the Philippines are actively looking for corrective options and this presents Fuel Tech with opportunities to bring our FGC technology to these markets.

Products

Our NOx reduction and particulate control technologies are installed worldwide on over 1,200 combustion units, including utility, industrial and municipal solid waste applications.  Our products include customized NOx control systems and our patented ULTRA^® technology, which converts urea-to-ammonia on site and provides safe reagent for use in SCR systems.

A market factor for the APC product line is the continued use of coal and the growth of biomass for global electricity production.  The growth of natural gas in the U.S. for industrial applications has increased the need for SCR technology since it often meets the definition of BACT and is required on new industrial units.

Sales of APC products were $6.9 million and $8.6 million for the years ended December 31, 2021 and 2020, respectively.

APC Competition

Competition with our NOx reduction suite of products may be expected from companies supplying SCR Systems, SNCR systems, ESP retrofits and FGC technologies. In addition, we experience competition in the urea-to-ammonia conversion market.

The SCR process is an effective and proven method of control for removal of NOx up to 90%. SCR systems have a high capital cost of $300+/kW on retrofit coal applications. Companies including GE, Babcock Power, Babcock & Wilcox (B&W) Company, CECO Environmental and Mitsubishi are active SCR system and reagent feed system providers.

The use of both urea and ammonia as the reagent for the SNCR process can reduce NOx by 30% - 70%, depending on a number of factors. Ammonia can be effective on incinerators and on Circulating Fluidized Bed combustion units, but has limited applicability for most utility boilers, where urea is dominant. The ammonia-based systems utilize either anhydrous or aqueous ammonia, both of which are hazardous substances. Competitors for ammonia based SNCR include CECO Environmental, B&W, and Yara, with Hamon and B&W for urea based SNCR systems.

ESP retrofit competitors include B&W, Southern Environmental and Hamon. FGC competition includes Wahlco, Inc. and Chemithon, Inc.

Lastly, with respect to urea-to-ammonia conversion technologies, our controlled urea decomposition system competes with Hamon and Wahlco, which manufacture a system that hydrolyzes urea under high temperature and pressure.

APC Backlog

Consolidated APC segment backlog at December 31, 2021 was $9.1 million versus backlog at December 31, 2020 of $5.3 million. The Company expects to recognize revenue on approximately $5.6 million of the backlog over the next 12 months with the remaining recognized thereafter.

FUEL CHEM

Product and Markets

The FUEL CHEM^® technology segment revolves around the unique application of specialty chemicals to improve the efficiency, reliability and environmental status of plants operating in the electric utility, industrial, pulp and paper, waste-to-energy, and university and district heating markets.  FUEL CHEM programs are currently in place on combustion units in North America, Mexico and Europe, treating a wide variety of solid and liquid fuels, including coal, heavy oil, black liquor, biomass and municipal waste.

Central to the FUEL CHEM approach is the introduction of chemical reagents, such as magnesium hydroxide, to combustion units via in-body fuel application (pre-combustion) or via direct injection (post-combustion) utilizing our proprietary TIFI^® technology.  By attacking performance-hindering problems, such as slagging, fouling and corrosion, as well as the formation of sulfur trioxide (SO3), and ammonium bisulfate, our programs offer numerous operational, financial and environmental benefits to owners of boilers, furnaces and other combustion units.

A key market factor for this product line is the continued use of coal for global electricity production. In 2021, coal accounted for approximately 22% of all U.S. electricity generation and roughly 37% of global electricity generation. These values were up from 21% and 33% in 2020, respectively, however 2021 was unique relative to higher natural gas pricing and future increases in coal usage are not expected to be the long-term trend. Major coal consumers include the U.S., China and India. Additional market dynamics include a growing, worldwide utilization of biomass for both steam and electrical production, and the continued use of heavy fuel oil for power generation. The principal markets for this product line are electric power plants burning coals with slag-forming constituents such as sodium, iron and high levels of sulfur. Sodium is typically found in the Powder River Basin coals of Wyoming and Montana. Iron is typically found in coals produced in the Illinois Basin region. High sulfur content is typical of Illinois Basin coals and certain Appalachian coals. High sulfur content can give rise to unacceptable levels of SO3 formation especially in plants with SCR systems and flue gas desulphurization units (scrubbers).  As coal units strive to compete in electricity supply markets, lower cost, higher slagging fuels can create more operational challenges which TIFI^® Programs can help mitigate. The current Mexican government is utilizing more indigenous fuel sources for power generation because the international market for high sulfur fuel oil (what Mexico produces) has been significantly reduced with the adoption of the new International Maritime Organization restrictions. Fuel Tech’s TIFI^® systems can help with SO3 mitigation at these oil-fired power generation units.

The combination of slagging coals and SO3-related issues, such as “blue plume” formation, air pre-heater fouling and corrosion, SCR fouling and the proclivity to suppress certain mercury removal processes, represents an attractive market potential for Fuel Tech.

Sales of the FUEL CHEM products were $17.4 million and $14.0 million, for the years ended December 31, 2021 and 2020, respectively.

Competition

Competition for our FUEL CHEM product line includes chemicals sold by specialty chemical companies, such as Imerys, Environmental Energy Services, Inc., and SUEZ Water Technologies. No technologically comparable substantive competition currently exists for our TIFI^® technology, which is designed primarily for slag control and SO3 abatement, but there can be no assurance that such lack of substantive competition will continue.

INTELLECTUAL PROPERTY

The majority of our products are protected by U.S. and non-U.S. patents. We own 41 granted patents worldwide and one allowed utility model patent in China. We have 11 patent applications pending: including 5 in the U.S. and 6 in non-U.S. jurisdictions. These patents and applications cover some 26 inventions, 11 associated with our NOx reduction business, 11 associated with the FUEL CHEM business, and four associated with water treatment. Our granted patents have expiration dates ranging from November of 2022 to January of 2039.

Management believes that the protection provided by the numerous claims in the above referenced patents or patent applications is substantial and affords us a significant competitive advantage in our business. Accordingly, any significant reduction in the protection afforded by these patents or any significant development in competing technologies could have a material adverse effect on our business.

EMPLOYEES

At December 31, 2021, we had 73 employees, 66 in North America, one in China and six in Europe. We enjoy good relations with our employees and are not a party to any labor management agreement.

HUMAN CAPITAL RESOURCES

We manage our Company according to a set of core principles. Included among these are respect for the individual, aspiring to excellence, safety and security, and appropriate reward for outstanding effort. We have put in place an employee compensation plan that recognizes hard work with above average salaries and equity incentive awards.  We have returned to face-to-face work in our day-to-day activities, but we have implemented training and provided guidance for our teams to operate safely even in a face-to-face environment. As a technology company, we prize and reward educational achievement. Among our employees are found a large cohort of doctorates as well as other advanced degrees and professional certifications. We expect that these approaches to managing and empowering our human capital will continue to guide our progress in the future. 

AVAILABLE INFORMATION

We are a fully integrated company using a suite of advanced technologies to provide boiler optimization, efficiency improvement and air pollution reduction and control solutions to utility and industrial customers worldwide. Originally incorporated in 1987 under the laws of the Netherlands Antilles as Fuel-Tech N.V., we were domesticated in the United States on September 30, 2006, and continue as a Delaware corporation with our corporate headquarters at 27601 Bella Vista Parkway, Warrenville, Illinois, 60555-1617. Fuel Tech maintains an Internet website at www.ftek.com. Our Annual Report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to those reports filed or furnished pursuant to Section 13(a) of the Exchange Act are made available through our website as soon as reasonably practical after we electronically file or furnish the reports to the Securities and Exchange Commission. Our website also contains our Corporate Governance Guidelines and Code of Ethics and Business Conduct, as well as the charters of the Audit, Compensation, and Nominating and Corporate Governance committees of the Board of Directors. All of these documents are available in print without charge to stockholders who request them. Information on our website is not incorporated into this report.

ITEM 1A - RISK FACTORS

The following is a discussion of the material risk factors; however, they may not be the only risks that we may face. The risks described below should not be considered a complete list of potential risks that we face, and additional risks and uncertainties not currently known to us or that we currently consider immaterial may also negatively impact our business. If any of these risks develop into actual or expected events, our business, financial condition, results of operations or cash flows could be materially and adversely affected, and, as a result, the trading price of our common stock could decline. You should carefully consider the risk factors described below, together with the other information included in this Annual Report on Form 10-K, before you decide to invest in our securities. Please read the cautionary notice regarding forward-looking statements under the heading “Forward-Looking Statements.”

RISKS RELATED TO OUR PRODUCTS AND PRICING

Our Product Portfolio Lacks Diversification

We have two broad technology segments that provide advanced engineering solutions to meet the pollution control, efficiency improvement, and operational optimization needs of coal and natural gas-fired energy-related facilities worldwide. They are as follows:

An adverse development in our advanced engineering solutions business as a result of competition, technological change, government regulation, customers converting to use natural gas or other fuels, or any other factor could have a significantly greater impact than if we maintained more diverse operations.

We Face Substantial Competition

Competition in the Air Pollution Control market comes from competitors utilizing their own NOx reduction processes, including SCR systems, SNCR systems, Low NOx Burners, Over-Fire Air systems, ammonia and urea based delivery systems for SNCR and SCR, which do not infringe our patented or proprietary technologies.  Indirect competition will also arise from business practices such as the purchase rather than the generation of electricity, fuel switching, closure or de-rating of units, and sale or trade of pollution credits and emission allowances.  Utilization by customers of such processes or business practices or combinations thereof may adversely affect our pricing and participation in the NOx control market if customers elect to comply with regulations by methods other than the purchase of our Air Pollution Control products.  See Item 1 “Products” and “APC Competition” in the Air Pollution Control segment overview.

Competition for our FUEL CHEM markets include chemicals sold by specialty chemical companies, such as Imerys, Environmental Energy Services, Inc., and SUEZ Water Technologies.

Our Dependence Upon Fixed-price Contracts Could Adversely Affect our Operating Results.

The majority of our air pollution control projects are currently performed on a fixed-price basis. Under a fixed-price contract, we agree on the price that we will receive for the entire project, based upon a defined scope, which includes specific assumptions and project criteria. If our estimates of the costs to complete the project are below the actual costs that we incur, our margins will decrease, or we may incur a loss. The revenue, cost and gross profit realized on a fixed-price contract will often vary from the estimated amounts because of unforeseen conditions or changes in job conditions and variations in labor and equipment productivity over the term of the contract. While our fixed-price contracts are typically not individually material to our operating results, if we are unsuccessful in mitigating these risks, we may realize gross profits that are different from those originally estimated and incur reduced profitability or losses on projects. Depending on the size of a project, these variations from estimated contract performance could have a significant effect on our operating results. In general, turnkey contracts to be performed on a fixed-price basis involve an increased risk of significant variations. Generally, our contracts and projects vary in length, depending on the size and complexity of the project, project owner demands and other factors. The foregoing risks are exacerbated for projects with longer-term durations and the inherent difficulties in estimating costs and of the interrelationship of the integrated services to be provided under these contracts whereby unanticipated costs or delays in performing part of the contract can have compounding effects by increasing costs of performing other parts of the contract.

Customers May Cancel or Delay Projects.

Customers may cancel or delay projects for reasons beyond our control. Our orders normally contain cancellation provisions that permit us to recover our costs, and, for most contracts, a portion of our anticipated profit in the event a customer cancels an order. If a customer elects to cancel an order, we may not realize the full amount of revenues included in our backlog. If projects are delayed, the timing of our revenues could be affected and projects may remain in our backlog for extended periods of time. Revenue recognition occurs over long periods of time and is subject to unanticipated delays. If we receive relatively large orders in any given quarter, fluctuations in the levels of our quarterly backlog can result because the backlog in that quarter may reach levels that may not be sustained in subsequent quarters.

Our Operating Results May Be Adversely Affected by Product Pricing

The onset of significant competition for either of the technology segments might require us to lower our product prices in order to remain competitive and have a corresponding adverse impact on our realized gross margins and operating profitability. See the risk factor entitled “We Face Substantial Competition” above.

Our Customer Base Is Highly Concentrated

A small number of customers have historically accounted for a significant portion of our revenues. During 2021, our five largest customers accounted for approximately 67% of our net revenues, with our largest customer accounting for approximately 21% of our net revenues. There can be no assurance that all significant customers will continue to purchase our products in the same quantities that they have in the past. The loss of any one of our significant customers or a material reduction in sales to a significant customer could have a material adverse effect on our sales and results of operations.

RISKS RELATED TO OUR BUSINESS

Our Financial Performance May Vary Significantly From Period to Period.

Our annual revenues and earnings have varied in the past and are likely to vary in the future. Our contracts generally stipulate customer specific delivery terms and may have contract cycles of a year or more, which subjects these contracts to many factors beyond our control. In addition, contracts that are significantly larger in size than our typical contracts tend to intensify their impact on our annual operating results. Furthermore, as a significant portion of our operating costs are fixed, an unanticipated decrease in our revenues, a delay or cancellation of orders in backlog, or a decrease in the demand for our products, may have a significant impact on our annual operating results. Therefore, our annual operating results may be subject to significant variations and our operating performance in one period may not be indicative of our future performance.

Our Manufacturing Operations Are Dependent on Third-party Suppliers.

Although we are not dependent on any one supplier, we are dependent on the ability of our third-party suppliers to supply our raw materials, as well as certain specific component parts. The third-party suppliers upon which we depend may default on their obligations to us due to bankruptcy, insolvency, lack of liquidity, adverse economic conditions, operational failure, fraud, loss of key personnel, or other reasons. We cannot assure that our third-party suppliers will dedicate sufficient resources to meet our scheduled delivery requirements or that our suppliers will have sufficient resources to satisfy our requirements during any period of sustained demand. Failure of suppliers to supply, or delays in supplying, our raw materials or certain components, or allocations in the supply of certain high demand raw components, for any reason, including, without limitation, disruptions in our suppliers’ business activities due to cybersecurity incidents, terrorist activity, public health crises (such as coronavirus), fires or other natural disasters could materially adversely affect our operations and ability to meet our own delivery schedules on a timely and competitive basis.  Additionally, our third-party suppliers may provide us with raw materials or component parts that fail to meet our expectations or the expectations of our customers, which could subject us to product liability claims, other claims and litigation.

Our Use of Subcontractors Could Potentially Harm our Profitability and Business Reputation.

Occasionally we act as a prime contractor in some of the engineered projects we undertake. In our capacity as lead provider and when acting as a prime contractor, we perform a portion of the work on our projects with our own resources and typically subcontract activities such as manufacturing and installation work. In our industry, the lead contractor is normally responsible for the performance of the entire contract, including subcontract work. Thus, when acting as a prime contractor, we are subject to risk associated with the failure of one or more subcontractors to perform as anticipated.

We employ subcontractors at various locations around the world to meet our customers’ needs in a timely manner, meet local content requirements and reduce costs. Subcontractors perform all of our manufacturing for customers. The use of subcontractors decreases our control over the performance of these functions and could result in project delays, escalated costs and substandard quality. These risks could adversely affect our profitability and business reputation. In addition, many of our competitors, who have greater financial resources and greater bargaining power than we have, use the same subcontractors that we use and could potentially influence our ability to hire these subcontractors. If we were to lose relationships with key subcontractors, our business could be adversely impacted.

We Rely on Several Key Employees Whose Absence or Loss Could Disrupt our Operations or Be Adverse to our Business.

We are highly dependent on the experience of our management in the continuing development of our operations. The loss of the services of certain of these individuals would have a material adverse effect on our business. Although we have employment and non-competition agreements with certain of our key employees, as a practical matter, those agreements will not assure the retention of our employees, and we may not be able to enforce all of the provisions in any employment or non-competition agreement. Our future success will depend in part on our ability to attract and retain qualified personnel to manage our development and future growth. We cannot guarantee that we will be successful in attracting and retaining such personnel. Our failure to recruit additional key personnel could have a material adverse effect on our financial condition, results of operations and cash flows.

We May Not Be Able to Successfully Protect our Patents and Proprietary Rights

We hold licenses to or own a number of patents for our products and processes.  In addition, we also have numerous patent applications pending both in the U.S. and abroad.  There can be no assurance that any of our pending patent applications will be granted or that our outstanding patents will not be challenged, overturned or otherwise circumvented by competitors.  In foreign markets, the absence of harmonized patent laws makes it more difficult to ensure consistent respect for our patent rights in emerging markets.  In addition, certain critical technical information relating to our products which is not patented is held as trade secret, and protected by trade secret laws and restrictions on disclosure contained in our confidentiality and licensing agreements.  There can be no assurance that such protections will prove adequate or that we will have adequate remedies against contractual counterparties for disclosure of our trade secrets or other violations of our intellectual property rights.  See Item 1 above under the caption “Intellectual Property.”

Our Results May Be Affected By Foreign Operations

We currently have foreign operations predominantly in Europe with our offices located in Gallarate, Italy. The future business opportunities in this market are dependent on the continued implementation and enforcement of regulatory policies that will benefit our technologies, the acceptance of our engineering solutions in such markets, the ability of potential customers to utilize our technologies on a competitive, cost-effective basis, and our ability to protect and enforce our intellectual property rights.

We May Not Be Able to Purchase Raw Materials on Commercially Advantageous Terms

Our FUEL CHEM technology segment is dependent, in part, upon a supply of magnesium hydroxide. Any adverse changes in the availability of this chemical will likely have an adverse impact on ongoing operation of our FUEL CHEM programs. On March 4, 2009, we entered into a Restated Product Supply Agreement (PSA) with Martin Marietta Magnesia Specialties, LLC (MMMS) in order to assure the continuance of a stable supply from MMMS of magnesium hydroxide products for our requirements in the U.S. and Canada. The term of the PSA expires on December 31, 2022. Pursuant to the PSA, MMMS supplies us with magnesium hydroxide products manufactured pursuant to our specifications and we have agreed to purchase from MMMS, and MMMS has agreed to supply, 100% of our requirements for such magnesium hydroxide products for our customers who purchase such products for delivery in the U.S. and Canada. There can be no assurance that we will be able to obtain a stable source of magnesium hydroxide in markets outside the U.S.

RISKS RELATED TO OUR INDUSTRY

Demand for Our APC and FUEL CHEM Products is Affected by External Market Factors

Reduced coal and natural gas-fired electricity demand across the U.S. has led to production declines.  Contributing factors to this decline in coal-fired generation were: 1) lower natural gas prices which allowed utility operators to increase the amount of power generated from natural gas plants, 2) increased cost of environmental compliance with current environmental regulations, 3) constrained funding for capital projects, and 4) the increased production of electricity from renewable sources, such as wind and solar.

Our Business Is Dependent on Continuing Air Pollution Control Regulations and Enforcement

Our business is significantly impacted by and dependent upon the regulatory environment surrounding the electricity generation market.  Our business will be adversely impacted to the extent that regulations are repealed or amended to significantly reduce the level of required NOx or particulate matter reduction, or to the extent that regulatory authorities delay or otherwise minimize enforcement of existing laws.  Additionally, long-term changes in environmental regulation that threaten or preclude the use of coal or other fossil fuels as a primary fuel source for electricity production which result in the reduction or closure of a significant number of fossil fuel-fired power plants may adversely affect our business, financial condition and results of operations.  See Item 1 above under the caption “Regulations and Markets” in the Air Pollution Control segment overview.

GENERAL RISK FACTORS

There Is Still Significant Uncertainty Related to the COVID-19 Pandemic; Future Pandemics Could Pose Similar Challenges

The continued prevalence of the COVID-19 pandemic around the world presents significant risks to the Company, not all of which the Company is able to fully evaluate or even foresee at the current time. The COVID-19 pandemic has affected the Company's operations in the year ended December 31, 2021 and 2020, although the impact of the pandemic is difficult to quantify, and may continue to do so indefinitely hereafter. The Company has experienced, and may continue to experience, delays in supply of critical equipment, reductions in demand for certain of our products as several accounts remained offline due to soft electricity demand and unplanned outage activities and due to the delay or abandonment of ongoing or anticipated projects due to the customers', suppliers' and other third parties' financial distress or concern regarding the volatility of global markets. 

Management cannot predict the full impact of the COVID-19 pandemic on the Company's sales and marketing channels and supply chain, and, as a result, the ultimate extent of the effects of the COVID-19 pandemic on the Company is highly uncertain and will depend on future developments.  Such effects could exist for an extended period of time even after the pandemic ends and any future such pandemic could have similar or greater challenges.

Geopolitical and Unexpected Events May Impact New or Existing Projects and Prices and Availability of Raw Materials, Energy and Other Materials. 

These events may also impact energy and regulatory policy nationally or regionally for the impacted regions. Such disruptions could have a material adverse effect on our business and financial results.

ITEM 1B - UNRESOLVED STAFF COMMENTS

None

ITEM 2 - PROPERTIES

We own an office building in Warrenville, Illinois, which has served as our corporate headquarters since June 23, 2008. This facility, with approximately 40,000 square feet of office space, is sufficient to meet our requirements for the foreseeable future.

We also operate from leased office facilities and we do not segregate any of these leased facilities by operating business segment. The terms of the Company's primary lease arrangements as of December 31, 2021 are as follows:

ITEM 3 - LEGAL PROCEEDINGS

From time to time we are involved in litigation with respect to matters arising from the ordinary conduct of our business. In the opinion of management, based upon presently available information, either adequate provision for anticipated costs have been accrued or the ultimate anticipated costs will not materially affect our consolidated financial position, results of operations, or cash flows.

See Note 9 "Commitments and Contingencies" in the Notes to the Consolidated Financial Statements in this Annual Report on Form 10-K.

ITEM 4 – MINE SAFETY DISCLOSURES

Not Applicable

PART II

ITEM 5 - MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASE OF EQUITY SECURITIES

Market

Our common stock has been traded since September 1993 on The NASDAQ Stock Market, Inc, where it trades under the symbol FTEK.

Holders

As of February 28, 2022, there were 74 holders of record of our common stock, which does not include the number of beneficial owners whose common stock was held in street name or through fiduciaries.

Dividends

We have never paid cash dividends on the common stock and have no current plan to do so in the foreseeable future. The declaration and payment of dividends on the common stock is subject to the discretion of our Board of Directors. The decision of the Board of Directors to pay future dividends will depend on general business conditions, the effect of a dividend payment on our financial condition, and other factors the Board of Directors may consider relevant. The current policy of the Board of Directors is to reinvest earnings in operations to promote future growth.

ITEM 6 - RESERVED

ITEM 7 - MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (amounts in thousands of dollars)

Overview

In 2021, the Company continued to experience a challenging operational environment resulting from the COVID-19 pandemic along with the ongoing substitution of gas-fired and renewable energy plants for coal-fired installations. Our cost control efforts reduced selling, general and administrative expenses from fiscal 2020 by 11%. We continue to invest in new technologies to expand our product offerings into the water pollution control and treatment market. Our capital resources are sufficient for our immediate and longer-term needs and we continue to enjoy the services and support of a dedicated workforce. We expect that our cost control efforts will continue to reduce our operating expenses and the diminishing effects of the pandemic should lead to an improved market outlook.

COVID-19 Pandemic

The effects of COVID-19 have presented significant risks to the Company, not all of which the Company is able to fully evaluate or even foresee at the current time. The COVID-19 pandemic has affected the Company's operations during the twelve months ended December 31, 2021 and 2020. Although the impact of the pandemic is difficult to quantify, the Company has experienced, and may continue to experience, reductions in demand for certain of products, due to soft electric demand and unplanned outage activities, and due to the delay or abandonment of ongoing or anticipated projects due to our customers', suppliers' and other third parties' financial distress or concern regarding the volatility of global markets. Management cannot predict the full impact of the COVID-19 pandemic on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects of the COVID-19 pandemic on the Company is highly uncertain and will depend on future developments. Such effects could exist for an extended period of time even after the pandemic comes to an end.

Our Liquidity

In February 2021, Fuel Tech entered into a securities purchase agreement with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement, (i) 5,000,000 shares of common stock, (ii) and 2,500,000 warrants exercisable for a total of 2,500,000 shares of common stock. The gross proceeds to the Company from this private placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. The receipt of these funds strengthened our cash position and in conjunction with our net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next 12 months.

Key Operating Factors

Our FUEL CHEM® segment performed well in 2021, with higher revenues and segment operating profits compared to 2020. FUEL CHEM benefitted from the operations of our current installed base, including recent program installations; an overall rise in demand for energy attributable to the resumption of economic activity following a period of reduced activity due to the impact of COVID-19; and increased seasonal power usage. 

Our APC business faced some headwind in 2021 due to ongoing project delays and cancellations that have resulted in a lack of new orders, and changes in project timing, but picked up some in the fourth quarter. We are also encouraged by the pace and depth of our business development activities, which reflects an increased focus on global emissions protocols across a variety of fuel sources. Our Consolidated APC backlog at year end was $9,119 and our global sales pipeline has increased to $50 -75 million range.

Background

We have two broad technology segments that provide advanced engineered solutions to meet the pollution control, efficiency improvement and operational optimization needs of energy-related facilities worldwide. They are as follows:

Air Pollution Control Technologies

The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include SCR systems, NOxOUT and HERT™ SNCR systems, and OFA systems. Our SCR systems can also include AIG, and GSG™ systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. ULTRA^® technology creates ammonia at a plant site using safe urea for use with any SCR application. ESP technologies make use of electrostatic precipitator products and services to reduce particulate matter. FGC systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions. We distribute our products through our direct sales force and third-party sales agents.

FUEL CHEM Technologies

The FUEL CHEM technology segment, which uses chemical processes in combination with advanced CFD and CKM boiler modeling, for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in coal-fired furnaces and boilers through the addition of chemicals into the furnace using TIFI^® Targeted In-Furnace Injection™ technology. Fuel Tech sells its FUEL CHEM program through its direct sales force and agents to industrial and utility power-generation facilities. FUEL CHEM programs have been installed on combustion units in North America, Europe, China, and India, treating a wide variety of solid and liquid fuels, including coal, heavy oil, biomass and municipal waste. The FUEL CHEM program improves the efficiency, reliability and environmental status of plants operating in the electric utility, industrial, pulp and paper, waste-to-energy, university and district heating markets and offers numerous operational, financial and environmental benefits to owners of boilers, furnaces and other combustion units.

The key market dynamic for both technology segments is the continued use of fossil fuels, especially coal, as the principal fuel source for global electricity production. In 2021, coal accounted for approximately 22% of all U.S. electricity generation and roughly 37% of global electricity generation. These values were up from 21% and 33% in 2020 respectively, however 2021 was unique relative to higher natural gas pricing and future increases in coal usage are not expected to be the long-term trend. Major coal consumers include China, the U.S. and India.

Critical Accounting Policies and Estimates

The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the U.S. (GAAP), which require us to make estimates and assumptions. We believe that, of our accounting policies (see Note 1 to the consolidated financial statements), involve a higher degree of judgment and complexity and are deemed critical. We routinely discuss our critical accounting policies with the Audit Committee of the Board of Directors.

Revenue Recognition

The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.

FUEL CHEM

Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services. 

On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.  These projects are similar in nature to the APC projects described below and for those projects where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. 

For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.

The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.

The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional.

Air Pollution Control Technology

Fuel Tech’s APC contracts are typically six to eighteen months in length. A typical contract will have three or four critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.

As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is not met.

Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses). Unexpected or unknown costs could affect the timing of revenue recognition and the cumulative profitability of the related projects.

Fuel Tech’s APC product line also includes ancillary revenue for post contractual goods and services.  Revenue associated with these activities are recognized at a point in time when delivery of goods or completion of the service obligation is performed.

Fuel Tech has installed over 1,200 units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.

As of December 31, 2021 we had no construction contracts in progress that were identified as a loss contract. As of December 31, 2020 we had one construction contract in progress that was identified as a loss contract and a provision for losses of $176 was recorded in other accrued liabilities on the consolidated balance sheet. 

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the consolidated balance sheets. In our Air Pollution Control Technology segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. These assets are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. At December 31, 2021 and 2020, contract assets for APC technology projects were approximately $1,277 and $2,079, respectively, and $0 and $269, respectively, for the FUEL CHEM technology segment, and are included in accounts receivable on the consolidated balance sheets.

However, the Company will periodically bill in advance of costs incurred before revenue is recognized, resulting in contract liabilities. These liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Contract liabilities were $390 and $850 at December 31, 2021 and 2020, respectively, and are included in other accrued liabilities on the consolidated balance sheets.

Allowance for Doubtful Accounts

The allowance for doubtful accounts is management’s best estimate of the amount of credit losses in accounts receivable. The allowance for doubtful accounts balance can be impacted by unforeseen collectability issues. In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with us, the customer’s payment history and the customer’s financial stability. Receivables are considered past due if payment is not received by the date agreed upon with the customer, which is normally 30 days after invoice. Representatives of our management team review all past due accounts on a bi-weekly basis to assess collectability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management’s collectability assessment and is adjusted if deemed necessary through a corresponding charge or credit to bad debt expense, which is included in selling, general, and administrative expenses in the consolidated statements of operations. Bad debt write-offs are made when management believes it is probable a receivable will not be recovered.

Inventories

Inventories consist primarily of equipment constructed for resale and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment. Inventories are carried at weighted average cost and periodically evaluated to identify obsolete or otherwise impaired parts that are written off when management determines usage is not probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and the existing sales pipeline for which the inventory could be used.

Assessment of Potential Impairments of Goodwill and Intangible Assets

Goodwill is not amortized, but rather is reviewed annually (in the fourth quarter) or more frequently if indicators arise, for impairment. We do not have any indefinite-lived intangible assets other than goodwill. Such indicators include a decline in expected cash flows, a significant adverse change in legal factors or in the business climate, unanticipated competition, a decrease in our market capitalization to an amount less than the carrying value of our assets, or slower growth rates, among others.

Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. We have two reporting units: the FUEL CHEM segment and the APC technology segment.

Our evaluation of goodwill impairment involves first assessing qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. We may bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of a reporting unit to its carrying value. Fuel Tech uses a discounted cash flow (DCF) model to determine the current fair value of its FUEL CHEM reporting unit as this methodology was deemed to best quantify the present values of our expected future cash flows and yield a fair value that should be in line with the aggregate market value placed on the outstanding common stock as reflected by the current stock price multiplied by the outstanding shares of common stock. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Events outside our control, specifically market conditions that impact revenue growth assumptions, could significantly impact the fair value calculated. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction may differ from those used to evaluate the impairment of goodwill.

The application of our DCF model in estimating the fair value of each reporting segment is based on the ‘net asset’ approach to business valuation. In using this approach for each reportable segment, we forecast segment revenues and expenses out to perpetuity and then discount the resulting cash flows to their present value using an appropriate discount rate. The forecast considers, among other items, the current and expected business environment, expected changes in the fixed and variable cost structure as the business grows, and a revenue growth rate that we feel is both achievable and sustainable. The discount rate used is composed of a number of identifiable risk factors, including equity risk, company size, and certain company-specific risk factors such as our debt-to-equity ratio, among other factors, that when added together, results in a total return that a prudent investor would demand for an investment in our Company.

In the event the estimated fair value of a reporting unit per the DCF model is less than the carrying value, additional analysis would be required. The additional analysis would compare the carrying amount of the reporting unit’s goodwill with the implied fair value of that goodwill. The implied fair value of goodwill is the excess of the fair value of the reporting unit over the fair values assigned to all of the assets and liabilities of that unit as if the reporting unit was acquired in a business combination and the fair value of the reporting unit represented the purchase price.

The Company utilizes Accounting Standards Update (ASU) 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment for the annual goodwill impairment test.

Fuel Tech performed its annual goodwill impairment analysis for each of its reporting units as of October 1, 2021 and determined that no impairment of goodwill existed within the FUEL CHEM technology segment.

Impairment of Long-Lived Assets and Amortizable Intangible Assets

Long-lived assets, including property and equipment and intangible assets, are reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) may not be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and the remaining estimated operational life compared to the asset’s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected cash flows. Due to the existence of impairment indicators, we performed a more detailed analysis of potential long-lived and intangible asset impairment in the APC technology asset group during the fourth quarter of 2021 and determined no impairment exists.

There was no impairment recorded during 2021. During the fourth quarter of 2020, the Company recorded an abandonment charge of $197 due to the Company's decision to no longer maintain and defend certain patents and trademarks which are no longer contributing to operations. The abandonment charge was calculated by determining the net book values of the abandoned patent assets by deducting the accumulated amortization from the acquisition cost. The abandonment charge is included in Intangible assets abandonment and building impairment line in the accompanying Consolidated Statements of Operations for the year then ended December 31, 2020.

A significant portion of our property and equipment is comprised of assets deployed at customer locations relating to our FUEL CHEM technology asset group, and due to the shorter-term duration over which this equipment is depreciated, the likelihood of impairment is mitigated. The discontinuation of a FUEL CHEM program at a customer site would most likely result in the re-deployment of all or most of the affected assets to another customer location rather than an impairment.

Valuation Allowance for Deferred Income Taxes

Deferred tax assets represent deductible temporary differences and net operating loss and tax credit carryforwards. A valuation allowance is recognized if it is more likely than not that some portion of the deferred tax asset will not be realized. At the end of each reporting period, management reviews the realizability of the deferred tax assets. As part of this review, we consider if there are taxable temporary differences that could generate taxable income in the future, if there is the ability to carry back the net operating losses or credits, if there is a projection of future taxable income, and if there are any tax planning strategies that can be readily implemented. As required by ASC 740 "Income Taxes", a valuation allowance must be established when it is more likely than not that all or a portion of a deferred tax asset will not be realized. This assessment resulted in a valuation allowance on our deferred tax assets of $14,950 and $15,971 at December 31, 2021 and 2020, respectively.

Stock-Based Compensation

We recognize compensation expense for employee equity awards ratably over the requisite service period of the award, adjusted for estimated forfeitures.

We utilize the Black-Scholes option-pricing model to estimate the fair value of stock option awards. Determining the fair value of stock options using the Black-Scholes model requires judgment, including estimates for (1) risk-free interest rate - an estimate based on the yield of zero-coupon treasury securities with a maturity equal to the expected life of the option; (2) expected volatility - an estimate based on the historical volatility of our common stock for a period equal to the expected life of the option; and (3) expected life of the option - an estimate based on historical experience including the effect of employee terminations.

Recently Issued Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The standard will become effective for interim and annual periods beginning after December 15, 2022, with early adoption permitted. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is currently in the process of evaluating the impact of adoption, but we do not believe the adoption of this standard will have a material impact on our financial statements.

2021 versus 2020

Highlights for the year ended December 31, 2021, compared to 2020:

Revenues

Revenues for the years ended December 31, 2021 and 2020 were $24,261 and $22,550, respectively. The year-over-year increase of $1,711 or 8%, was driven by the increase in revenue in our FUEL CHEM technology segment in our U.S. operations, partially offset by a decrease in our APC technology segment. Our U.S. revenues increased by $893, or 5%, from $18,622 in 2020 to $19,515 in 2021, and our international revenues increased by $818, or 21%, from $3,928 in 2020 to $4,746 in 2021.

Revenues for the APC technology segment were $6,896 for the year ended December 31, 2021, a decrease of $1,661, or 19%, versus fiscal 2020. The decrease in APC revenue for the twelve month period ending December 31, 2021 in comparison to the prior year amount was principally related to the timing of project execution and new APC orders. Consolidated APC backlog was $9,119 and $5,268 at December 31, 2021 and 2020, respectively. Our backlog at December 31, 2021 consists of U.S. domestic projects totaling $9,113 and international projects totaling $6.

Revenues for the FUEL CHEM technology segment for the year ended December 31, 2021 were $17,365, an increase of $3,372, or 24%, versus fiscal 2020. The increase in FUEL CHEM revenue was due to new customer accounts, increased demand for power generation, and recovery from extended unscheduled outages and significantly reduced operations from the impact of the COVID-19 pandemic. We remain focused on attracting new customers in our FUEL CHEM business, for both coal and non-coal applications. Our ability to attract new coal customers continues to be affected by the electric demand market and fuel switching as a result of low natural gas prices.

Cost of sales and gross margin

Consolidated cost of sales for the years ended December 31, 2021 and 2020 were $12,363 and $11,912, respectively. Consolidated gross margin percentages for the years ended December 31, 2021 and 2020 were 49% and 47%, respectively. The gross margins for the APC technology segment increased to 49% in 2021 from 46% in 2020. The overall increase in gross margin in the APC technology segment from 2020 to 2021 is primarily due to project mix, timing of project execution, and $1,427 of remediation costs incurred during 2020 to address non-conformance issues under the terms of a contract with a U.S. customer, partially offset by the timing of a large insurance settlement of $2,589 in 2020 which was used to fund the recovery plan for the project affected. Gross margin percentage for the FUEL CHEM technology segment increased to 49% from 48% for the years ended December 31, 2021 and 2020.

Selling, general and administrative

Selling, general and administrative expenses for the years ended December 31, 2021 and 2020 were $12,055 and $13,600, respectively. The decrease of $1,545, or 11%, is attributed to the following:

Depreciation and Amortization

Depreciation and amortization are calculated using the straight-line method and included in selling, general and administrative expense. For the years ended December 31, 2021 and 2020, the Company recorded depreciation of $584 and $663 and amortization of $157 and $185, respectively.

Research and development

Research and development expenses were $1,332 and $1,177 for the years ended December 31, 2021 and 2020, respectively. The expenditures in our research and development expenses were focused on new product development efforts in the pursuit of commercial applications for technologies outside of our traditional markets, and in the development and analysis of new technologies that could represent incremental market opportunities. This includes water treatment technologies and more specifically, our DGI™ Dissolved Gas Infusion Systems, an innovative alternative to current aeration technology. This infusion process has a variety of applications in the water and wastewater industries, including remediation, treatment, biological activity and wastewater odor management. DGI™ technology benefits include reduced energy consumption, installation costs, and operating costs, while improving treatment performance.

Intangible assets abandonment

In the fourth quarter of 2020, the Company recorded an abandonment charge of $197 due to the Company's decision to no longer maintain and defend certain patents and trademarks which are no longer contributing to operations. The abandonment charge was calculated by determining the net book values of the abandoned patent assets by deducting the accumulated amortization from the acquisition cost. 

Other income

Other income of $1,570 increased by $1,451 for the year ended December 31, 2021 compared to $119 in 2020 due to the forgiveness of the Paycheck Protection Program (PPP) Loan in 2021 for $1,556 of principal and $10 of accrued interest.

Income tax benefit (expense)

For the year ended December 31, 2021, we recorded an income tax expense of $14 on pre-tax income of $68. Our effective tax rates were 20.6% and (1.4)% for the years ended December 31, 2021 and 2020, respectively. For the year ended December 31, 2020, we recorded an income tax expense of $57 on pre-tax loss of $4,221. The effective tax rate for the year-ended December 31, 2020 differed from the federal statutory rate of 21% as a result of establishing a deferred tax liability associated with a certain book-to-tax timing difference. 

Liquidity and Sources of Capital

At December 31, 2021, we had cash and cash equivalents of $35,893 (excluding restricted cash of $1,161) and working capital of $38,242 versus cash and cash equivalents of $10,640 (excluding restricted cash of $1,966) and working capital of $15,542 at December 31, 2020. We have no outstanding debt other than our outstanding letters of credit under our current credit agreement, which does not have any financial covenants as we are currently in a Cash Collateral Security agreement with our lender. We expect to continue operating under this arrangement for the foreseeable future. 

Operating activities provided cash of $761 for the year ended December 31, 2021, primarily due to a decrease in accounts receivable balances of $3,794, a decrease in prepaid expenses and other assets of $634, and add backs of non-cash items from our net income from continuing operations for depreciation and amortization of $741, stock compensation expense of $82, and loss on sale of equipment of $54, partially offset by decreases in our accrued liabilities and other non-current liabilities of $1,404 and accounts payable balances of $772, an increase in inventory of $252, and adjustments for non-cash items from our net income from continuing operations for the gain on the PPP Loan forgiveness of $1,556 and provision for doubtful accounts of $619.

Operating activities used $2,707 of cash for the year ended December 31, 2020, primarily due to the add back of non-cash items from our net loss from continuing operations of $266 including stock compensation expense of $290, depreciation and amortization of $848, intangible assets abandonment charge of $197, an increase in our accrued liabilities and other non-current liabilities of $2, and an increase in our accounts payable balance of $198 offset by a decrease in prepaid expenses and other current and non-current assets of $161, a decrease in our inventory balance of $171 and a decrease in our accounts receivable balance of $1,095.

Investing activities used cash of $84 and $247 for the years ended December 31, 2021 and 2020, respectively. Investing activities for the years ended December 31, 2021 and 2020 primarily consisted of purchases of equipment.

Financing activities provided $23,977 and $1,282 of cash for the years ended December 31, 2021 and 2020.  In 2021, the Company issued common stock in connection with the private placement offering. Proceeds from the private placement offering were $25,812, partially offset by the costs related to the offering of $1,783. In 2020, the Company received a Paycheck Protection Plan loan of $1,556.

The effects of the COVID-19 global pandemic have presented significant risks to the Company, not all of which the Company is able to fully evaluate or even foresee at the current time. Although the impact of the pandemic is difficult to quantify, the Company has experienced, and may continue to experience, reductions in demand for certain of our products due to the delay or abandonment of ongoing or anticipated projects due to our customers’, suppliers’ and other third parties’ financial distress or concern regarding the volatility of global markets. Other direct or indirect COVID-19 related effects, such as supply chain disruptions and travel restrictions, have been impacting operations and financial performance to varying degrees. We continue to monitor our liquidity needs and in response to our recent periods of declines in revenue and net losses have taken measures to reduce expenses and restructure operations which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. We have evaluated our ongoing business needs, and considered the cash requirements of our base business of Air Pollution Control and FUEL CHEM, as well as our efforts to wind-down our APC operations in China. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, and c) the costs of winding down our APC operations in China as well as other research and development initiatives.  Based on this analysis, management believes that currently we have sufficient cash and working capital to operate our base APC and FUEL CHEM businesses. We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next 12 months.

We expect capital expenditures in 2022 for maintenance of field equipment, computer and systems, and general office equipment. We expect to fund our capital expenditures with cash from operations or cash on hand.

On February 11, 2021, Fuel Tech entered into a securities purchase agreement to issue and sell, in a private placement, 5,000,000 shares of Common Stock and 2,500,000 warrants exercisable for a total of 2,500,000 shares of Common Stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783.

On April 17, 2020, the Company received $1,556 in loan proceeds from the PPP, established pursuant to the Coronavirus Aid, Relief, and Economic Security Act and administered by the U.S. Small Business Administration (SBA). On January 8, 2021 the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to fund its qualified payroll expenses. When the loan was forgiven, the Company reduced the non-current liability by the amount forgiven and recorded other income in the Consolidated Statement of Operations.  

On June 19, 2019, the Company entered into a Cash Collateral Security agreement with BMO Harris Bank, N.A. (the BMO Harris agreement) to use for the sole purpose of issuing standby letters of credit. The BMO Harris agreement requires us to pledge as cash collateral 105% of the aggregate face amount of outstanding standby letters of credit. The Company pays 250 basis points on the face values of outstanding letters of credit. There are no financial covenants set forth in the BMO Harris agreement. At December 31, 2021, the Company had outstanding standby letters of credit totaling approximately $1,104 under the BMO Harris agreement. As of December 31, 2021, the Company held $1,161 in a separate restricted use designated BMO Harris Bank N.A. deposit account. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instruments.  The excess in restricted cash collateral at year-end is related to timing of the release of several standby letters of credit which expired just after year-end. The outstanding standby letters of credit mature as follows:

ITEM 7A - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our earnings and cash flow are subject to fluctuations due to changes in foreign currency exchange rates. We do not enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.

We are also exposed to changes in interest rates primarily due to our debt arrangement (refer to Note 11 to the consolidated financial statements). A hypothetical 100 basis point adverse move in interest rates along the entire interest rate yield curve would not have a materially adverse effect on interest expense during the year ended December 31, 2021.

ITEM 8 - FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Report of Independent Registered Public Accounting Firm

Stockholders and the Board of Directors of Fuel Tech, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Fuel Tech, Inc. (the Company) as of December 31, 2021 and 2020, the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for the years then ended, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Impairment of Goodwill

As described in Note 1 of the financial statements, goodwill is tested for impairment at least annually as of the first day of the Company’s fourth quarter, or more frequently if events or changes in circumstances indicate that the carrying value may not be recoverable. The Company’s evaluation of goodwill impairment involves the comparison of the fair value of the Company’s reporting units to their carrying values. The Company uses a discounted cash flow analysis to determine the current fair value of the Company’s FUEL CHEM reporting unit. This requires management to make significant estimates and assumptions including estimates of future growth rates, operating margins and discount rates based on the estimated weighted average cost of capital for the business. Changes in these assumptions could have a significant impact on the fair value, which could have an impact on the conclusion of impairment, if any.

The Company performed its impairment analysis as of October 1, 2021. As part of the impairment assessment, the Company’s management determined that the fair value of the FUEL CHEM reporting unit exceeded its carrying value. As a result, no impairment charge was recorded in the consolidated statement of operations for the year ended December 31, 2021. Key financial assumptions used to determine the discounted cash flows of the reporting unit were developed by management.

We identified the evaluation of goodwill impairment as a critical audit matter because of the significant assumptions and judgments made by management within the discounted cash flow analysis used to determine the fair value of the Company’s FUEL CHEM reporting unit. Auditing the reasonableness of management’s key assumptions, including revenue growth rates, operating margins, and discount rates involved a high degree of auditor judgment and an increased effort, including the use of our fair value specialists.

Our audit procedures related to revenue growth rates, operating margins, and discount rates used to evaluate the Company’s FUEL CHEM reporting unit for impairment included the following, among others:

Revenue Recognition

As described in Note 1 of the financial statements, revenue for the Company’s Air Pollution Control technology contracts is recognized based on the extent of progress towards completion of the contract compared to the estimated effort to complete the contract. The Company uses a cost-to-cost input method of measuring progress on these contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred.

We identified revenue recognition over time for the Company’s Air Pollution Control technology contracts as a critical audit matter because of certain significant assumptions management makes when measuring progress, including assumptions related to expected total costs to complete the contract. Auditing these assumptions involved a high degree of auditor judgement and an increase in audit effort due to the impact these assumptions have on the amount of revenue recognized.

Our audit procedures related to the evaluation of management’s estimation of revenue recognized include the following, among others:

Assessing the validity of data used in the model for completeness and accuracy by agreeing, on a sample basis, key data inputs to source documents, including job costing reports and project budgets.

Fuel Tech, Inc.

Consolidated Balance Sheets

(in thousands of dollars, except share and per-share data)

See notes to consolidated financial statements.

Fuel Tech, Inc.

Consolidated Statements of Operations

(in thousands of dollars, except share and per-share data)

See notes to consolidated financial statements.

Fuel Tech, Inc.

Consolidated Statements of Comprehensive Loss

(in thousands of dollars)

See notes to consolidated financial statements.

Fuel Tech, Inc.

Consolidated Statements of Stockholders’ Equity

(in thousands of dollars or shares, as appropriate)  

See notes to consolidated financial statements.

Fuel Tech, Inc.

Consolidated Statements of Cash Flows

(in thousands of dollars)

See notes to consolidated financial statements.

Notes to Consolidated Financial Statements

(in thousands of dollars, except share and per-share data)

1.     ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES     

Organization

Fuel Tech, Inc. and subsidiaries ("Fuel Tech", the "Company", "we", "us" or "our") develops and provides proprietary technologies for air pollution control, process optimization, water treatment, and advanced engineering services. Our primary focus is on the worldwide marketing and sale of Air Pollution Control (APC) technologies and our FUEL CHEM program.

The Company’s nitrogen oxide (NOx) reduction technologies reduce nitrogen oxide emissions from boilers, furnaces and other stationary combustion sources. To reduce NOx emissions, our technologies utilize advanced combustion modification techniques and post-combustion NOx control approaches including non-catalytic, catalytic and combined systems.  The Company also provides solutions for the mitigation of particulate matter, including particulate control with electrostatic precipitator products and services, and using Flue Gas Conditioning (FGC) systems which modify the ash properties of particulate for improved collection efficiency. Our FUEL CHEM program is based on proprietary TIFI^® Targeted In-Furnace™ Injection technology, in combination with advanced Computational Fluid Dynamics (CFD) and Chemical Kinetics Modeling (CKM) boiler modeling, in the unique application of specialty chemicals to improve the efficiency, reliability, fuel flexibility, boiler heat rate, and environmental status of combustion units by controlling slagging, fouling, corrosion, and opacity. Water treatment technologies include DGI™ Dissolved Gas Infusion Systems which utilize a patented nozzle to deliver supersaturated oxygen solutions and other gas-water combinations to target process applications or environmental issues. This infusion process has a variety of applications in the water and wastewater industries, including remediation, aeration, biological treatment, and wastewater odor management.

Our business is materially dependent on the continued existence and enforcement of air quality regulations, particularly in the U.S. We have expended significant resources in the research and development of new technologies in building our proprietary portfolio of air pollution control, fuel and boiler treatment chemicals, computer modeling and advanced visualization technologies. Many of Fuel Tech's products and services rely heavily on the Company's CFD modeling capabilities, which are enhanced by internally developed, high-end visualization software.

International revenues were $4,746 and $3,928 for the years ended December 31, 2021 and 2020, respectively. These amounts represented 20% and 17% of Fuel Tech’s total revenues for the respective periods of time. Foreign currency changes did not have a material impact on the calculation of these percentages. We have foreign offices in Beijing, China and Gallarate, Italy.

Basis of Presentation

The consolidated financial statements include the accounts of Fuel Tech and its wholly owned subsidiaries. All intercompany transactions have been eliminated.

The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP). The books and records of subsidiaries located in foreign countries are maintained according to generally accepted accounting principles in those countries. Upon consolidation, the Company evaluates the differences in accounting principles and determines whether adjustments are necessary to convert the foreign financial statements to the accounting principles upon which the consolidated financial statements are based. All intercompany transactions have been eliminated.

COVID-19 Pandemic

The effects of the coronavirus (COVID-19) global pandemic have presented significant risks to the Company, not all of which the Company is able to fully evaluate or even foresee at the current time. The COVID-19 pandemic has affected the Company's operations during the twelve months ended December 31, 2021 and 2020. Although the impact of the pandemic is difficult to quantify, the Company has experienced, and may continue to experience, reductions in demand for certain of products, due to soft electric demand and unplanned outage activities, and due to the delay or abandonment of ongoing or anticipated projects due to our customers', suppliers' and other third parties' financial distress or concern regarding the volatility of global markets.

Management cannot predict the full impact of the COVID-19 pandemic on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects of the COVID-19 pandemic on the Company is highly uncertain and will depend on future developments. Such effects could exist for an extended period of time even after the pandemic comes to an end.

Private Placement Offering

On February 11, 2021, Fuel Tech entered into a securities purchase agreement (the “Purchase Agreement”) with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement (the “Private Placement”), (i) 5,000,000 shares (the “Shares”) of common stock, (ii) and 2,500,000 warrants (the “Warrants”) exercisable for a total of 2,500,000 shares of common stock (the “Warrant Shares”) with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale. In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.  The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of common stock and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Shares and Warrant Shares for resale. The receipt of these funds strengthen our current cash position and in conjunction with our net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next 12 months.

Liquidity

We have experienced declines in revenues and net losses in recent years. We continue to monitor our liquidity needs and have taken measures to reduce expenses and restructure operations, which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. As a result, we have evaluated our ongoing business needs, and considered the cash requirements of our APC and FUEL CHEM businesses. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, c) current availability of working capital, and d) support for our research and development initiatives. We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next 12 months. 

Use of Estimates

The preparation of the financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company uses estimates in accounting for, among other items, revenue recognition, allowance for doubtful accounts, income tax provisions, excess and obsolete inventory reserve, impairment of long-lived assets, and warranty expenses. Actual results could differ from those estimates.

Fair Value Measurements

The carrying values of cash and cash equivalents, accounts receivable, accounts payable and long-term borrowings are reasonable estimates of their fair value due to their short-term nature or interest rates.

We apply authoritative accounting guidance for fair value measurements of financial and non-financial assets and liabilities. This guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis and clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Transfers between levels of the fair value hierarchy are recognized based on the actual date of the event or change in circumstances that caused the transfer. We had no assets or liabilities that were valued using level 2 or level 3 inputs and therefore there were no transfers between levels of the fair value hierarchy during the periods ended December 31, 2021 and 2020.

Cash, cash equivalents and restricted cash

We include cash and investments having an original maturity of three months or less at the time of acquisition in cash and cash equivalents. We have never incurred realized or unrealized holdings gains or losses on securities classified as cash equivalents. Income resulting from short-term investments is recorded as interest income. At December 31, 2021, we had cash on hand of approximately $886 at our Beijing, China subsidiary that is subject to certain local regulations that may limit the immediate availability of these funds outside of China. Cash on hand at our Italy subsidiary totaled approximately $1,391 at December 31, 2021. Cash on hand at our Chilean subsidiary totaled approximately $244 at December 31, 2021.

Restricted cash represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A. At  December 31, 2021 the balance of restricted cash totaling $1,161 is comprised of $891 in current assets relating to existing standby letters of credit with varying maturity dates and expire no later than December 31, 2022 and $270 in long-term assets will remain through the expiration dates of the underlying standby letters of credit (the latest maturity date is February 1, 2023) with BMO Harris Bank N.A. Refer to Note 11 Debt Financing for further information on the Cash Collateral Security agreement with BMO Harris Bank N.A.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheet that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows:

Foreign Currency Risk Management

Our earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. We do not enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.

Accounts Receivable

Accounts receivable consist of amounts due to us in the normal course of our business, are not collateralized, and normally do not bear interest. Accounts receivable includes contract assets, billings occurring subsequent to revenue recognition under Accounting Standards Codification (ASC) 606 Revenue from Contracts with Customers. At December 31, 2021 and 2020, unbilled receivables were approximately $1,277 and $2,348, respectively. Refer to Note 2 for further detail.

Allowance for Doubtful Accounts

The allowance for doubtful accounts is our management's best estimate of the amount of credit losses in accounts receivable. In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with Fuel Tech, the customer’s payment history, and the customer’s financial stability. Receivables are considered past due if payment is not received by the date agreed upon with the customer, which is normally 30 days. Representatives of our management team review all past due accounts on a weekly basis to assess collectability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management’s collectability assessment and is adjusted if deemed necessary through a corresponding charge or credit to bad debts expense, which is included in selling, general, and administrative expenses in the consolidated statements of operations. Bad debt write-offs are made when management believes it is probable a receivable will not be recovered. The table below sets forth the components of the Allowance for Doubtful Accounts for the years ended December 31.

Prepaid expenses and other current assets

Prepaid expenses and other current assets include Chinese banker acceptances of $55 and $549 as of December 31, 2021 and 2020, respectively. These are short-term commitments of typically three to six months for future payments and can be redeemed at a discount or applied to future vendor payments.

Inventories

Inventories consist primarily of equipment constructed for resale and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. At December 31, 2021, inventory included equipment constructed for resale of $227 and spare parts, net of reserves of $121. Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment. Inventories are periodically evaluated to identify obsolete or otherwise impaired parts and are written off when management determines usage is not probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and existing sales pipeline for which the inventory could be used. The table below sets forth the components of the Excess and Obsolete Inventory Reserve for the years ended December 31.

Foreign Currency Translation and Transactions

Assets and liabilities of consolidated foreign subsidiaries are translated into U.S. dollars at exchange rates in effect at year end. Revenues and expenses are translated at average exchange rates prevailing during the year. Gains or losses on foreign currency transactions and the related tax effects are reflected in net income. The resulting translation adjustments are included in stockholders’ equity as part of accumulated other comprehensive loss.

Accumulated Other Comprehensive Loss

Research and Development

Research and development costs are expensed as incurred. Research and development projects funded by customer contracts are reported as part of cost of goods sold. Internally funded research and development expenses are reported as operating expenses. The DGI™ equipment developed and constructed as part of our water treatment technologies is reported in Other assets on our Consolidated Balance Sheets.

Product/System Warranty

We typically warrant our air pollution control products and systems against defects in design, materials and workmanship for one to two years. A provision for estimated future costs relating to warranty expense is recorded when the products/systems become commercially operational.

Goodwill

Goodwill is tested for impairment at least annually as of the first day of our fourth quarter, or more frequently if events or changes in circumstances indicate that the carrying value may not be recoverable. Our evaluation of goodwill impairment involves first assessing qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. We may bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of our reporting units to their carrying values. We use a discounted cash flow (DCF) model to determine the current fair value of our two reporting units. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction may differ from those used to evaluate the impairment of goodwill. For the APC business segment, the Company used working capital as a proxy of fair value for the business segment. Fuel Tech performed its annual goodwill impairment analysis for each of its reporting units as of October 1, 2021 and determined that no impairment of goodwill existed.

Goodwill is evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. We have two reporting units for goodwill evaluation purposes: the FUEL CHEM technology segment and the APC technology segment. Goodwill of our reporting units is assigned upon acquisition after considering the nature of the net assets giving rise to the goodwill and how each reporting unit would enjoy the benefits and synergies of the net assets acquired. There is no goodwill associated with our APC technology segment. The entire goodwill balance of $2,116 was allocated to the FUEL CHEM technology segment as of December 31, 2021 and 2020. The Company did not recognize a charge for goodwill impairment for the periods ended December 31, 2021 and 2020.

Other Intangible Assets

Management reviews other finite-lived intangible assets, patent assets, trade names, and lease assets for impairment when events or changes in circumstances indicate the carrying amount of an asset or asset group may not be recoverable. In the event that impairment indicators exist, a further analysis is performed and if the sum of the expected undiscounted future cash flows resulting from the use of the asset or asset group is less than the carrying amount of the asset or asset group, an impairment loss equal to the excess of the asset or asset group's carrying value over its fair value is recorded. Management considers historical experience and all available information at the time the estimates of future cash flows are made, however, the actual cash values that could be realized may differ from those that are estimated.

During the year ended December 31, 2020, Fuel Tech recorded an abandonment charge of $197 due to the Company's decision to no longer maintain and defend certain patents and trademarks which are no longer contributing to operations. The abandonment charge was calculated by determining the net book values of the abandoned patent assets by deducting the accumulated amortization from the acquisition cost. The abandonment charge is included in Intangible assets abandonment and impairment line in the accompanying Consolidated Statements of Operations for the year ended December 31, 2020. During the year ended December 31, 2021, Fuel Tech recorded no patent or trademark abandonment charges.

Third-party costs related to the development of patents are included within other intangible assets on the consolidated balance sheets. The third-party costs capitalized as patent costs during the years ended December 31, 2021 and 2020 were $52 and $0, respectively. Third-party costs are comprised of legal fees that relate to the review and preparation of patent disclosures and filing fees incurred to present the patents to the required governing body.

Our intellectual property portfolio has been a significant building block for the Air Pollution Control and FUEL CHEM technology segments. The patents are essential to the generation of revenue for our businesses and are essential to protect us from competition in the markets in which we serve. These costs are being amortized on the straight-line method over the period beginning with the patent issuance date and ending on the patent expiration date. Patent maintenance fees are charged to operations as incurred.

Amortization expense from continuing operations for intangible assets was $157 and $185 for the years ended December 31, 2021 and 2020, respectively. The table below shows the amortization period and other intangible asset cost by intangible asset as of December 31, 2021 and 2020, and the accumulated amortization and net intangible asset value in total for all other intangible assets.

The table below shows the estimated future amortization expense for intangible assets:

Property and Equipment

Property and equipment is stated at historical cost and does not include capital in process expenditures yet to be capitalized. Provisions for depreciation are computed by the straight-line method, using estimated useful lives that range based on the nature of the asset. Leasehold improvements are depreciated over the shorter of the associated lease term or the estimated useful life of the asset. Depreciation expense from continuing operations was $584 and $663 for the years ended December 31, 2021 and 2020, respectively. The table below shows the depreciable life and cost by asset class as of December 31, 2021 and 2020, and the accumulated depreciation and net book value in total for all classes of assets.

Property and equipment is reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) may not be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and remaining estimated operational life compared to the asset’s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected cash flows. A significant portion of our property and equipment is comprised of assets deployed at customer locations relating to our FUEL CHEM technology asset group, and due to the shorter-term duration over which this equipment is depreciated, the likelihood of impairment is mitigated. The discontinuation of a FUEL CHEM program at a customer site would most likely result in the re-deployment of all or most of the affected assets to another customer location rather than an impairment.

Revenue Recognition

The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.

Air Pollution Control Technology

Fuel Tech’s APC contracts are typically six to eighteen months in length. A typical contract will have three or four critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.

As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is not met.

Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses).

Fuel Tech’s APC product line also includes ancillary revenue for post contractual goods and services.  Revenue associated with these activities are recognized at point in time when delivery of goods or completion of the service obligation is performed.

Fuel Tech has installed over 1,200 units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.

FUEL CHEM

Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services. 

On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.  These projects are similar in nature to the APC projects described above and for those projects where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. 

For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.

The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.

The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional.

Cost of Sales

Cost of sales includes all internal and external engineering costs, equipment and chemical charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product line-related, as appropriate (e.g., test equipment depreciation and certain insurance expenses). Certain depreciation and amortization expenses related to tangible and intangible assets, respectively, are allocated to cost of sales. We classify shipping and handling costs in cost of sales in the consolidated statements of operations.

Selling, General and Administrative Expenses

Selling, general and administrative expenses primarily include the following categories except where an allocation to the cost of sales line item is warranted due to the project- or product-line nature of a portion of the expense category: salaries and wages, employee benefits, non-project travel, insurance, legal, rent, accounting and auditing, recruiting, telephony, employee training, Board of Directors’ fees, auto rental, office supplies, dues and subscriptions, utilities, real estate taxes, commissions and bonuses, marketing materials, postage and business taxes. Departments comprising the selling, general and administrative line item primarily include the functions of executive management, finance and accounting, investor relations, regulatory affairs, marketing, business development, information technology, human resources, sales, legal and general administration.

Income Taxes

The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and our experience with similar operations. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances.

Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than not threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitation has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.

Leases

The Company applies the provisions of ASC 842, Leases. The Company determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset. Right-of-use (ROU) assets and lease liabilities are recognized at the lease commencement date based on the present value of the future minimum lease payments over the lease term. Operating ROU assets also include the impact of any lease incentives. Operating leases are included in right-of-use operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Consolidated Balance Sheets.

Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.

We have lease agreements with lease and non-lease components, and we elected the practical expedient to not separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient to keep leases with an initial term of 12 months or less off of the consolidated balance sheet.

Stock-Based Compensation

Our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. 2014 Long-Term Incentive Plan (Incentive Plan), was adopted in May 2014 and allows for awards to be granted to participants in the form of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan may be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676 shares that may be issued or reserved for awards to participants under the Incentive Plan as of December 31, 2021. Based on the existing issued or reserved awards in Incentive Plan, there are 2,603,801 shares available to be used for future awards to participants in the Incentive Plan as of December 31, 2021.

Defined Contribution Plan

We have a retirement savings plan available for all our U.S. employees who have met minimum length-of-service requirements. Our contributions are determined based upon amounts contributed by the employees with additional contributions made at the discretion of the Board of Directors. Costs related to this plan were $206 and $222 in 2021 and 2020, respectively.

Basic and Diluted Earnings per Common Share

Basic earnings per share excludes the antidilutive effects of stock options, restricted stock units (RSUs), warrants, and the nil coupon non-redeemable convertible unsecured loan notes (see Note 6). Diluted earnings per share includes the dilutive effect of the nil coupon non-redeemable convertible unsecured loan notes, RSUs, warrants, and unexercised in-the-money stock options, except in periods of net loss where the effect of these instruments is antidilutive. Out-of-the-money stock options and warrants are excluded from diluted earnings per share because they are unlikely to be exercised and would be anti-dilutive if they were exercised. At December 31, 2021 and 2020, we had outstanding equity awards of 214,500 and 584,505, respectively, and 2,850,000 warrants at December 31, 2021, which were antidilutive for the purpose of calculation of the diluted earnings per share. As of December 31, 2020, 547,000 incremental equity awards were antidilutive because of the net loss in the year then ended. These equity awards could potentially dilute basic EPS in future years.

The table below sets forth the weighted-average shares used at December 31 in calculating earnings (loss) per share:

Risk Concentrations

Financial instruments that potentially subject the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. However, management believes the Company is not exposed to significant credit risk due to the financial position of its primary depository institution where a significant portion of its deposits are held.

For the year ended December 31, 2021, we had four customers which individually represented greater than 10% of revenues. Three customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue to the APC technology segment. In total these four customers represented 60% of consolidated revenues. We had no customer that accounted for greater than 10% of our current assets as of December 31, 2021.

For the year ended December 31, 2020, we had two customers which individually represented greater than 10% of revenues. Both customers contributed revenues to both product segments but were primarily concentrated in our FUEL CHEM technology segment and represented 28% of consolidated revenues. We had no customers that accounted for greater than 10% of our current assets as of December 31, 2020.

We control credit risk through requiring milestone payments on long-term contracts, performing ongoing credit evaluations of its customers, and in some cases obtaining security for payment through bank guarantees and letters of credit.

Treasury Stock

We use the cost method to account for common stock repurchases. During the years ended December 31, 2021 and 2020, we withheld 15,162 and 152,257 shares of our common stock, valued at approximately $52 and $570, respectively, to settle personal tax withholding obligations that arose as a result of restricted stock units that vested. Refer to Note 5, “Treasury Stock,” for further discussion.

Recently Issued Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and in November 2019, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842). This guidance amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The standard will become effective for interim and annual periods beginning after December 15, 2022, with early adoption permitted. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is currently in the process of evaluating the impact of adoption, but we do not believe the adoption of this standard will have a material impact on our financial statements.

2.     REVENUE RECOGNITION

Disaggregated Revenue by Product Technology

The following table presents our revenues disaggregated by product technology:

Disaggregated Revenue by Geography

The following table presents our revenues disaggregated by geography, based on the billing addresses of our customers:

Timing of Revenue Recognition

The following table presents the timing of our revenue recognition:

Contract Balances

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the consolidated balance sheets. In our Air Pollution Control Technology segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. For the FUEL CHEM technology segment, deliveries made in the current period but billed in subsequent periods are also considered contract assets. These assets are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. At December 31, 2021 and 2020, contract assets for APC technology projects were approximately $1,277 and $2,079, respectively, and $0 and $269, respectively, for the FUEL CHEM technology segment, and are included in accounts receivable on the consolidated balance sheets.

However, the Company will periodically bill in advance of costs incurred before revenue is recognized, resulting in contract liabilities. These liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Contract liabilities were $390 and $850 at December 31, 2021 and 2020, respectively, and are included in other accrued liabilities on the consolidated balance sheets.

Changes in the contract asset and liability balances during the year ended  December 31, 2021, were not materially impacted by any other items other than amounts billed and revenue recognized as described previously. Revenue recognized that was included in the contract liability balance at the beginning of the period was $776 and $565 for the years ended December 31, 2021 and 2020, respectively, which represented primarily revenue from progress toward completion of our APC technology contracts. 

As of December 31, 2021 we had no construction contracts in progress that were identified as a loss contract. As of December 31, 2020, we had one construction contract in progress that was identified as a loss contract and a provision for losses of $176 was recorded in other accrued liabilities on the consolidated balance sheet. Refer to Note 9 for an accrual related to equipment failure issue with a customer that requires remedy under the warranty provision of the customer contract.

Remaining Performance Obligations

Remaining performance obligations, represents the transaction price of Air Pollution Control technology booked orders for which work has not been performed. As of December 31, 2021, the aggregate amount of the transaction price allocated to remaining performance obligations was $9,119. The Company expects to recognize revenue on approximately $5,608 of the remaining performance obligations over the next 12 months with the remaining recognized thereafter.

Practical Expedients and Exemptions

We generally expense sales commissions on a ratable basis when incurred because the amortization period would have been one year or less. These costs are recorded within selling, general and administrative expenses within the Consolidated Statements of Operations. A practical expedient was elected to not recognize shipping and handling costs as a separate performance obligation under ASC 606.

Accounts Receivable

The components of accounts receivable are as follows:

3.     INCOME TAXES

Within the calculation of the Company’s annual effective tax rate, the Company has used assumptions and estimates that may change as a result of future guidance, interpretation, and rule-making from the Internal Revenue Service, the SEC, and the FASB and/or various other taxing jurisdictions.  For example, the Company anticipates that the state jurisdictions will continue to determine and announce their conformity to the U.S. Tax Act which could have an impact on the annual effective tax rate.

On March 27, 2020 the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted which enacted the following relief among others;

The components of loss before taxes for the years ended December 31 are as follows:

Significant components of income tax benefit (expense) for the years ended December 31 are as follows:

A reconciliation between the provision for income taxes calculated at the U.S. federal statutory income tax rate and the consolidated income tax expense in the consolidated statements of operations for the years ended December 31 is as follows:

The deferred tax assets and liabilities at December 31 are as follows:

The change in the valuation allowance for deferred tax assets for the years ended December 31 is as follows:

For the years ended December 31, 2021 and 2020, there were exercises of stock options of $0 and $296, respectively.

As required by ASC 740, we recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant tax authority.

We recognize interest and penalties related to unrecognized tax benefits in income tax expense for all periods presented. There were no interest and penalties recognized in income tax expense during the years ended December 31, 2021 and 2020. There were no unrecognized tax benefits as of December 31, 2021 and 2020.

We are subject to taxation in the U.S., various states, and in non-U.S. jurisdictions. Our U.S. income tax returns are primarily subject to examination from 2018 through 2020; however, U.S. tax authorities also have the ability to review prior tax years to the extent loss carryforwards and tax credit carryforwards are utilized. The open years for the non-U.S. tax returns range from 2013 through 2020 based on local statutes.

Management periodically estimates our probable tax obligations using historical experience in tax jurisdictions and informed judgments. There are inherent uncertainties related to the interpretation of tax regulations in the jurisdictions in which we transact business. The judgments and estimates made at a point in time may change based on the outcome of tax audits, as well as changes to or further interpretations of regulations. If such changes take place, there is a risk that the tax rate may increase or decrease in any period. Tax accruals for tax liabilities related to potential changes in judgments and estimates for both federal and state tax issues are included in current liabilities on the consolidated balance sheet.

The investment in foreign subsidiaries other than Fuel Tech S.p.A (Chile) and Beijing Fuel Tech is considered to be indefinite in duration and therefore we have not provided a provision for deferred U.S. income taxes on the unremitted earnings from those subsidiaries. A provision has not been established because it is not practicable to determine the amount of unrecognized deferred tax liability for such unremitted foreign earnings and because it is our present intention to reinvest the undistributed earnings indefinitely.

As required by ASC 740, a valuation allowance must be established when it is more likely than not that all or a portion of a deferred tax asset will not be realized. We have approximately $27,701 of U.S. net operating loss carryforwards available to offset future U.S. taxable income as of December 31, 2021.  The net operating loss carry-forwards related to tax losses generated in years ending December 31, 2017 and before in the U.S. totaling $10,733 begin to expire in 2034.  Further, we have tax loss carry-forwards of approximately $6,847 available to offset future foreign income in Italy as of December 31, 2021. We have recorded a full valuation allowance against the deferred tax asset because we cannot anticipate when or if this entity will have taxable income sufficient to utilize the net operating losses in the future. There is no expiration of the net operating loss carry-forwards related to tax losses generated in prior years in Italy. Finally, we have tax loss carry-forwards of approximately $13,476 available to offset future foreign income in China as of December 31, 2021. The net operating loss carry-forwards related to tax losses generated in prior years in China expire in 2022.

As of December 31, 2019, the investment in Fuel Tech S.p.A (Chile) was no longer considered to be indefinite and a provision for deferred U.S. income taxes was recorded. As of December 31, 2020, the provision for deferred U.S. income taxes related to the Fuel Tech S.p.A (Chile) investment was $155. As of December 31, 2021, Fuel Tech S.p.A (Chile) was still included in continuing operations. As a result an additional ($19) was recorded, adjusting the total consideration to $136. The deferred income taxes associated with this investment are offset by a valuation allowance of ($136).

4.     COMMON STOCK

At December 31, 2021 and 2020, respectively, we had 31,227,300 and 25,639,702 shares of common stock issued and 30,263,791 and 25,228,951 outstanding, with an additional 6,715 shares reserved for issuance upon conversion of the nil coupon non-redeemable convertible unsecured loan notes (see Note 6). As of December 31, 2021, we had 5,600,676 shares reserved for issuance upon the exercise or vesting of equity awards, of which 434,500 are stock options that are currently exercisable (see Note 8).

5.     TREASURY STOCK

Common stock held in treasury totaled 963,509 and 948,347 with a cost of $2,234 and $2,182 at December 31, 2021 and 2020, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested during the periods presented.

6.     NIL COUPON NON-REDEEMABLE CONVERTIBLE UNSECURED LOAN NOTES

At December 31, 2021 and 2020, we had a principal amount of $76 of nil coupon non-redeemable convertible unsecured perpetual loan notes (Loan Notes) outstanding. The Loan Notes are convertible at any time into common stock at rates of $6.50 and $11.43 per share, depending on the note. As of December 31, 2021, the nil coupon loan notes were convertible into 6,715 shares of common stock. Based on our closing stock price of $1.40 at December 31, 2021, the aggregate fair value of the common stock that the holders would receive if all the loan notes were converted would be approximately $9, which is less than the principal amount of the loans outstanding as of that date. The Loan Notes bear no interest and have no maturity date. They are repayable in the event of our dissolution and the holders do not have the option to cash-settle the notes. Accordingly, they have been classified within stockholders’ equity in the accompanying balance sheets. The notes do not hold distribution or voting rights unless and until converted into common stock.

For the years ended December 31, 2021 and 2020, there were no Loan Notes repurchased by the Company.

7. WARRANTS

On February 11, 2021, Fuel Tech entered into a securities purchase agreement to issue and sell, in a private placement, 5,000,000 shares of common stock and 2,500,000 warrants exercisable for a total of 2,500,000 shares of common stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale.  In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.  The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of common stock and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Shares and the Warrant Shares for resale.

Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of the warrants. The principal variable assumptions utilized in valuing warrants and the methodology for estimating such model inputs are: (1) risk-free interest rate of 0.59%, an estimate based on the yield of zero–coupon treasury securities with a maturity equal to the expected life of the warrant; (2) expected volatility of 94.66% – an estimate based on the historical volatility of Fuel Tech’s common stock for a period equal to the expected life of the warrant; and (3) expected life of the warrant of five and one-half years based on the term of the warrant. 

The calculated fair value allocated to the warrants is $7,337.  This amount has been recorded as Additional paid in capital - warrants and is shown net in the Additional paid in capital line of the consolidated balance sheets.  

The issuance of warrants to purchase shares of the Company's common stock are summarized as follows:

The following table summarizes information about warrants outstanding and exercisable at December 31, 2021:

8.     STOCK-BASED COMPENSATION

Under our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. 2014 Long-Term Incentive Plan (Incentive Plan), awards may be granted to participants in the form of Non-Qualified Stock Options, Incentive Stock Options, Stock Appreciation Rights, Restricted Stock, RSUs, Performance Awards, Bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan may be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676 shares that may be issued or reserved for awards to participants under the Incentive Plan which includes 1,200,000 additional shares as a result of an amendment to the Incentive Plan approved by our stockholders in May 2018. At December 31, 2021, we had 2,603,801 equity awards available for issuance under the Incentive Plan.

We did not record any excess tax benefits within income tax expense for the years ended December 31, 2021 and 2020. Given the Company has a full valuation allowance on its deferred tax assets, there were no excess tax benefits to record. In addition, we account for forfeitures of awards based on an estimate of the number of awards expected to be forfeited and adjusting the estimate when it is no longer probable that the employee will fulfill the service condition.

Stock-based compensation is included in selling, general and administrative costs in our consolidated statements of operations. The components of stock-based compensation from continuing operations for the years ended December 31, 2021 and 2020 were as follows:

Stock Options

The stock options granted to employees under the Incentive Plan have a 10-year life and they vest as follows: 50% after the second anniversary of the award date, 25% after the third anniversary, and the final 25% after the fourth anniversary of the award date. Fuel Tech calculates stock compensation expense for employee option awards based on the grant date fair value of the award, less expected annual forfeitures, and recognizes expense on a straight-line basis over the four-year service period of the award. Stock options granted to members of our Board of Directors vest immediately. Stock compensation for these awards is based on the grant date fair value of the award and is recognized in expense immediately. 

Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of employee stock options. The principal variable assumptions utilized in valuing options and the methodology for estimating such model inputs include: (1) risk-free interest rate – an estimate based on the yield of zero–coupon treasury securities with a maturity equal to the expected life of the option; (2) expected volatility – an estimate based on the historical volatility of Fuel Tech’s common stock for a period equal to the expected life of the option; and (3) expected life of the option – an estimate based on historical experience including the effect of employee terminations.

There were no stock options granted during the years ended December 31, 2021 and 2020.

The following table presents a summary of our stock option activity and related information for the years ended December 31:

The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on our closing stock price of $1.40 as of December 31, 2021, which would have been received by the option holders had those options holders exercised their stock options as of that date. 

The following table summarizes information about stock options outstanding at December 31, 2021:

As of and for the 12 months ended December 31, 2021, there was no non-vested stock option activity and no total unrecognized compensation cost related to non-vested stock options granted under the Incentive Plan. Fuel Tech received proceeds of $0 and $296 from the exercise of stock options in the years ended December 31, 2021 and 2020, respectively. It is our policy to issue new shares upon option exercises, loan conversions, and vesting of restricted stock units. We have not used cash and do not anticipate any future use of cash to settle equity instruments granted under share-based payment arrangements. Shares received for exercise of stock options come from newly issued shares. 

Restricted Stock Units

RSUs granted to employees vest over time based on continued service (typically vesting over a period between two and four years). Such time-vested RSUs are valued at the date of grant using the intrinsic value method based on the closing price of the common stock on the grant date. Compensation cost, adjusted for estimated forfeitures, is amortized on a straight-line basis over the requisite service period.

In addition to the time vested RSUs, the Company entered into a 2021 Executive Performance RSU Award Agreement with certain officers, including its President and Chief Executive Officer pursuant to which each 2021 Participating Executive will have the opportunity to earn a specified amount of RSUs. The amount of RSUs awarded, if any, will be based on the Company’s achievement of varying levels of operating income before the impact of incentive pay (but including adjustments to reflect the payment of sales commissions) in fiscal 2021, as determined by the Company, in its sole discretion. Nevertheless, no Participating Executive will be entitled to any such RSUs unless the Company achieves a minimum of $1 million in Operating income in 2021. If awarded, such RSUs will vest in equal amounts (i.e., 1/3, 1/3 and 1/3) over three years commencing one year after the grant date based on continued service. Such RSUs are valued at the date of grant based on the closing price of the Company’s common stock on the grant date. No RSUs were issued and no expense reflected in the financial statements for these awards as the achievement was not achieved. 

During the years ended December 31, 2021 and 2020, there were 50,002 and 605,630 restricted stock units that vested with a grant date fair value of $75 and $658, respectively. As of December 31, 2021, there was $18 of total unrecognized compensation cost related to all non-vested share-based compensation arrangements granted under the Incentive Plan. That cost is expected to be recognized over the remaining requisite service period of 0.2 years.

A summary of restricted stock unit activity for the years ended December 31, 2021 and 2020 is as follows:

Deferred Directors Fees

In addition to the Incentive Plan, Fuel Tech has a Deferred Compensation Plan for Directors (Deferred Plan). Under the terms of the Deferred Plan, Directors can elect to defer Directors’ fees for shares of Fuel Tech common stock that are issuable at a future date as defined in the agreement. In accordance with ASC 718, Fuel Tech accounts for these awards as equity awards as opposed to liability awards. In 2021 and 2020, there was no stock-based compensation expense under the Deferred Plan.

9.     COMMITMENTS AND CONTINGENCIES

Fuel Tech is subject to various claims and contingencies related to, among other things, workers compensation, general liability (including product liability), and lawsuits. The Company records liabilities where a contingent loss is probable and can be reasonably estimated. If the reasonable estimate of a probable loss is a range, the Company records the most probable estimate of the loss or the minimum amount when no amount within the range is a better estimate than any other amount. The Company discloses a contingent liability even if the liability is not probable or the amount is not estimable, or both, if there is a reasonable possibility that a material loss may have been incurred.

From time to time we are involved in litigation with respect to matters arising from the ordinary conduct of our business. In the opinion of management, based upon presently available information, either adequate provision for anticipated costs have been accrued or the ultimate anticipated costs will not materially affect our consolidated financial position, results of operations, or cash flows. We do not believe we have any pending loss contingencies that are probable or reasonably possible of having a material impact on our consolidated financial position, results of operations or cash flows.

As of December 31, 2021 and 2020 a charge of $0 and $176, respectively, was recorded in the other accrued liabilities line of the Consolidated Balance Sheets. During the third quarter of 2020, the Company was notified of an equipment component failure at a foreign customer location. The failure was remedied under the warranty provision of the contracts that was in place with the customer and supplier and was completed in the third quarter of 2021. In 2018, the Company was notified of a certain non-conformance issue with a U.S. customer associated with equipment that requires remedy under the warranty provision of the contract. During the second quarter of 2020 a charge of $1,150 to remedy this non-conformance issue was incurred. Offsetting this amount was a reversal of $499 of expense to reduce the allowance of doubtful accounts that had been previously reserved. The Company has completed all work associated with this issue. During the third quarter of 2020, the Company settled an outstanding claim with our insurance provider for these remediation efforts and recorded a receivable in the amount of $2,589. The settlement is recorded in the cost of sales line on the Consolidated Statement of Operations.  Collection of the funds was completed in October 2020.

Performance Guarantees

The majority of Fuel Tech’s long-term equipment construction contracts contain language guaranteeing that the performance of the system that is being sold to the customer will meet specific criteria. On occasion, performance surety bonds and bank performance guarantees/letters of credit are issued to the customer in support of the construction contracts as follows:

As of December 31, 2021, we had outstanding bank performance guarantees and letters of credit in the amount of $1,104 in support of equipment construction contracts that have not completed their final acceptance test or that are still operating under a warranty period. The performance guarantees and letters of credit expire in dates ranging from January 2022 through February 2023. The expiration dates may be extended if the project completion dates are extended. Our management believes it is probable that these projects will be successfully completed and that there will not be a material adverse impact on our operations from these bank performance guarantees and letters of credit. As a result, no liability has been recorded for these performance guarantees.

Product Warranties

Fuel Tech issues a standard product warranty with the sale of our products to customers. Our recognition of warranty liability is based primarily on analyses of warranty claims experience in the preceding years as the nature of our historical product sales for which we offer a warranty are substantially unchanged. This approach provides an aggregate warranty accrual that is historically aligned with actual warranty claims experienced. There was no change in the warranty liability included in the Other accrued liabilities line of the Consolidated Balance Sheet in 2021 and 2020. The warranty liability balance was $159 at December 31, 2021 and 2020.

10.     LEASES

The terms of the Company’s three primary office space lease arrangements are as follows:

The Company also has three additional operating leases related to certain office equipment and company leased vehicles and one short-term lease. Our leases have remaining lease terms of 0.2 years to 3.3 years. As of December 31, 2021, we have one new three-year equipment lease that has not yet commenced for $64. Our leases do not contain any material residual value guarantees or material restricted covenants and we currently have no material sublease arrangements. We have no financing leases as defined under ASC 842.

Total operating lease expense for the years ended December 31, 2021 is as follows:

The weighted average remaining lease term was 2.30 years as of December 31, 2021. The weighted average discount rate was 4.52% as of December 31, 2021. 

Remaining maturities of our existing lease liabilities as of December 31, 2021 were as follows:

The following is the balance sheet classification of our existing lease liabilities:

Supplemental cash flow information related to leases was as follows:

11.     DEBT FINANCING

On June 19, 2019, the Company entered into a Cash Collateral Security agreement with BMO Harris Bank, N.A. (the BMO Harris agreement) to use for the sole purpose of issuing standby letters of credit. The BMO Harris agreement requires us to pledge as cash collateral 105% of the aggregate face amount of outstanding standby letters of credit. The Company pays 250 basis points on the face values of outstanding letters of credit. There are no financial covenants set forth in the BMO Harris agreement. At December 31, 2021, the Company had outstanding standby letters of credit totaling approximately $1,104 under the BMO Harris agreement. As of December 31, 2021, the Company held $1,161 in a separate restricted use designated BMO Harris Bank N.A. deposit account. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instruments.

On April 17, 2020, the Company received $1,556 in loan proceeds from the Paycheck Protection Program (PPP), established pursuant to the Coronavirus Aid, Relief, and Economic Security Act and administered by the U.S. Small Business Administration (SBA). The unsecured loan is evidenced by a promissory note of the Company dated April 15, 2020 in the principal amount of $1,556, issued to BMO Harris Bank N.A., the lender. 

On January 8, 2021, the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to fund its qualified payroll expenses. The Company accounted for the PPP Loan as debt in accordance with ASC 470, Debt and accrued interest in accordance with the interest method under ASC 835-30.  When the loan was forgiven, the Company reduced the non-current liability by the amount forgiven and recorded other income in the Consolidated Statement of Operations. The SBA has the right to audit the loan forgiveness for 6 years after the date the loan was forgiven.  

12.     BUSINESS SEGMENT AND GEOGRAPHIC FINANCIAL DATA

Business Segment Financial Data

We segregate our financial results into two reportable segments representing two broad technology segments as follows:

The “Other” classification includes those profit and loss items not allocated to either reportable segment. There are no inter-segment sales that require elimination.

We evaluate performance and allocate resources based on gross margin by reportable segment. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. We do not review assets by reportable segment, but rather, in aggregate for the Company as a whole.

Information about reporting segment net sales and gross margin from continuing operations are provided below: