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CLNE US Equity

Clean Energy Fuels Corp.Utilities · Gas & Other Services Combined · CIK 1368265 · FY ends Dec 31
$1.62
+0.01 (+0.62%)
USD · as of 2026-08-21 · marketstack

CLNE · 10-K · period ended 2022-12-31

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filed 2023-02-28 · EDGAR original ↗

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations (this discussion, as well as discussions under the same heading in our other periodic reports, are referred to as the “MD&A”) should be read together with our audited consolidated financial statements and the related notes included in this report, and all cross references to notes included in this MD&A refer to the identified note in such consolidated financial statements. This section of the Form 10-K generally discusses 2022 and 2021 items and year-to-year comparisons of 2022 to 2021. Discussions of 2020 items and year-to-year comparisons of 2021 and 2020 that are not included in this Form 10-K can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2021, filed with the SEC on February 24, 2022.

Cautionary Note Regarding Forward-Looking Statements

This MD&A contains forward-looking statements. See the discussion about these statements under “Cautionary Note Regarding Forward-Looking Statements” at the beginning of this report.

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Overview

We are North America’s leading provider of the cleanest fuel for the transportation market, based on the number of stations operated and the amount of gasoline gallon equivalents (“GGEs”) of renewable natural gas (“RNG”) and conventional natural gas sold. We calculate one GGE to equal 125,000 British Thermal Units (“BTUs”) and, as such, one million BTUs (“MMBTU”) equals eight GGEs. Through our sales of RNG, which is derived from biogenic methane produced by the breakdown of organic waste, we help thousands of vehicles, from airport shuttles to city buses to waste and heavy-duty trucks, reduce their amount of climate-harming greenhouse gases (“GHG”) from 60% to over 400% based on determinations by the California Air Resources Board (“CARB”), depending on the source of the RNG, while also reducing criteria pollutants such as Nitrogen Oxides, or NOx. RNG is either delivered as compressed natural gas (“CNG”) or liquefied natural gas (“LNG”).

As a clean energy solutions provider, we supply RNG and conventional natural gas, both sourced from third party suppliers, in the form of CNG and LNG, for medium and heavy-duty vehicles; design and build, as well as operate and maintain (“O&M”), public and private vehicle fueling stations in the United States and Canada; develop and own dairy anaerobic digester gas (“ADG”) RNG production facilities; sell and service compressors and other equipment used in RNG production and at fueling stations; transport and sell RNG and conventional natural gas via “virtual” natural gas pipelines and interconnects; sell U.S. federal, state and local government credits (collectively, “Environmental Credits”) we generate by selling RNG as a vehicle fuel, including Renewable Identification Numbers (“RIN Credits” or “RINs”) under the federal Renewable Fuel Standard Phase 2 and credits under the California and the Oregon Low Carbon Fuel Standards (collectively, “LCFS Credits”); and obtain federal, state and local tax credits, grants and incentives.

At present, we see the best use of RNG as a replacement for fossil-based fuel in the transportation sector. We believe the most attractive market for RNG is U.S. heavy-duty Class 8 trucking and, based on information from the American Trucking Association and our own internal estimates, we believe there are approximately 4.1 million Class 8 heavy-duty trucks operating in the U.S. that use over 40 billion gallons of fuel per year. As of December 31, 2022, we deliver RNG to the transportation market through 569 fueling stations we own, operate or supply in 42 states and the District of Columbia in the U.S., including over 200 stations in California. We also own, operate, or supply 25 fueling stations in Canada as of December 31, 2022.

Critically, to generate the valuable Environmental Credits, RNG must be placed in vehicle fuel tanks. We believe our stations and customer relationships allow us to deliver substantially more RNG to vehicle operators than any other participant in the market – we calculate that we have access to more fueling stations and vehicle fleets than all our competitors combined. As of December 31, 2022, we served over 1,000 fleet customers operating over 50,000 vehicles on our fuels.

Longer term, we plan to expand availability of hydrogen fuel for vehicle fleets. As operators deploy more hydrogen powered vehicles, we can modify our fueling stations to reform our RNG and deliver clean hydrogen to customers. We also believe our RNG can be used to generate clean electricity to power electric vehicles, and we have the capability to add electric vehicle charging at our station sites, although the cost of adding electric vehicle charging capacity may be significant.

Impact of COVID-19, Inflation, Labor Shortage, Material Availability and Interest Rate

The COVID-19 pandemic had an adverse effect on the volume of our sales, which we saw bottom in the second quarter of 2020. We have since seen improvement in volumes in all customer markets with notable increases in the trucking customer market led by Amazon and the airports (fleet services) customer market, which increased by 28% and 10%, respectively, during the three months ended December 31, 2022, compared to the prior year period. Our total volume of GGEs sold and serviced for the year ended December 31, 2022 increased 7% compared to that in the prior year. The increase in fuel and O&M services volumes in the fourth quarter of 2022 and in fiscal year 2022 compared to that in the respective prior year periods was primarily due to COVID-19 restrictions being lifted and an increase in economic activities and travel generally.

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During the year ended December 31, 2022, we have experienced increases in commodity and supply chain costs due to inflationary pressures. Additionally, effects stemming from the COVID-19 pandemic have caused disruptions in labor supply and in supply chains, leading to shortages of certain materials and equipment and higher labor costs. The future duration and extent of these pressures and effects are difficult to predict. Although we have partially offset these increased costs through price increases for our products and services, our efforts to manage the current inflationary pressure and to recover inflation-based cost increases from our customers may be hampered by the structure of our contracts as well as the competitive and economic conditions of the markets in which we serve. For more information, see “Risk Factors” in Part I, Item 1A of this report.

As of December 31, 2022, the majority of our debt outstanding represents a long-term loan bearing variable rates of interest. Changes in market interest rates will affect the interest expense incurred from this outstanding long-term debt instrument, increasing or decreasing our interest expense in future periods. Furthermore, changes in market interest rates may affect the interest rate and corresponding interest expense on any new issuance of short-term and long-term debt securities. See “Quantitative and Qualitative Disclosures about Market Risk” in Part II, Item 7A of this report for more information.

We believe we have sufficient liquidity to support business operations through this volatile period, including total cash and cash equivalents and short-term investments of $263.5 million, excluding current portion of restricted cash, as of December 31, 2022 and $1.0 million of current debt. We have collected nearly all receivables relating to alternative fuel excise tax credits (“AFTC”) generated from 2021 fuel sales in 2022. In addition, as a result of the Inflation Reduction Act of 2022 being enacted on August 16, 2022, AFTC was reinstated and extended for an additional three years, beginning retroactively to January 1, 2022. For the year ended December 31, 2022, we recognized $21.8 million in AFTC revenue.

Performance Overview

This performance overview discusses matters on which our management focuses in evaluating our financial condition and our operating results.

Sources of Revenue

The following tables represent our sources of revenue:

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ Year Ended December 31,

Product revenue(1): ​ ​ ​ ​ ​ ​ ​ ​ ​

Volume-related(2) ​ ​ ​ ​ ​ ​ ​ ​ ​

Change in fair value of derivative instruments(4) ​ ​ 2.1 ​ ​ (3.5) ​ ​ 0.5

Total volume-related product revenue ​ ​ 225.3 ​ ​ 196.7 ​ ​ 350.7

Station construction sales ​ ​ 26.6 ​ ​ 16.4 ​ ​ 22.3

Service revenue(6): ​ ​ ​ ​ ​ ​ ​ ​ ​

Volume-related, O&M services ​ ​ 39.6 ​ ​ 41.9 ​ ​ 45.9

Other services ​ ​ 0.2 ​ ​ 0.6 ​ ​ 1.3

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Key Operating Data

In evaluating our operating performance, we focus primarily on: (1) the amount of total fuel volume we sell to our customers with particular focus on RNG volume as a subset of total fuel volume, (2) O&M services volume dispensed at facilities we do not own but where we provide O&M services on a per-gallon or fixed fee basis, (3) our station construction cost of sales, and (4) net income (loss) attributable to us. All RNG and conventional natural gas sold are currently sourced from third-party suppliers. The following tables present our key operating data for the years ended December 31, 2020, 2021 and 2022. Certain gallons are included in both fuel and service volumes when the Company sells fuel (product revenue) to a customer and provides maintenance services (service revenue) to the same customer.

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Fuel volume, GGEs(2) sold (in millions), ​ Year Ended December 31,

correlating to total volume-related product revenue 2020 2021 2022

Conventional natural gas(1) ​ 82.1 ​ ​ 78.8 ​ ​ 69.6

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

O&M services volume, GGEs(2) serviced (in millions), ​ Year Ended December 31,

correlating to volume-related O&M services revenue 2020 2021 2022

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ Year Ended December 31,

Station construction cost of sales ​ $ 24.0 ​ $ 15.0 ​ $ 19.4

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2021 – 2022 Developments

TotalEnergies Joint Venture. On March 3, 2021, we entered into an agreement (the “TotalEnergies JV Agreement”) with TotalEnergies to create 50/50 joint ventures to develop ADG RNG production facilities in the United States. The TotalEnergies JV Agreement contemplates investing up to $400.0 million of equity in production projects, and TotalEnergies and the Company each committed to initially provide $50.0 million (the “TotalEnergies JV Equity Obligations”). Pursuant to the TotalEnergies JV Agreement, each ADG RNG production facility project will be formed as a separate limited liability company (“LLC”) that is owned 50/50 by us and TotalEnergies, and contributions to such LLCs count toward the TotalEnergies JV Equity Obligations. On October 12, 2021, we entered into an LLC agreement (the “DR Development Agreement”) with TotalEnergies to develop a dairy ADG RNG production facility project (the “DR JV”). Under the DR Development Agreement, we and TotalEnergies each committed to contribute $7.0 million to the DR JV and on November 1, 2021, we and TotalEnergies each made an initial $4.8 million capital contribution to the DR JV.

SG Credit Agreement. On March 12, 2021, we amended the credit agreement (as amended, the “SG Credit Agreement”) with SG to permit us to use up to $45.0 million of loan proceeds to fund certain station build costs and up to $20.0 million to fund the TotalEnergies JV Equity Obligations. Our ability to draw under the SG Credit Agreement ended on January 2, 2022. As of December 31, 2022, we repaid the remaining $2.0 million outstanding balance under the SG Facility and the related accrued and unpaid interest. Upon such payment, the SG Facility was paid in full and no amounts remained outstanding thereon. See Note 12 for more information about our outstanding debt.

bp Joint Venture. On April 13, 2021, we entered into an agreement (“bp JV Agreement”) with bp that created a 50/50 joint venture (“bpJV”) to develop, own and operate new ADG RNG production facilities in the United States. 100% of the RNG produced from the projects developed and owned by the bpJV will be provided to the vehicle fuels market pursuant to our existing marketing agreement with bp. Pursuant to the bp JV Agreement, we and bp committed to provide $30.0 million and $50.0 million, respectively, with bp and us each receiving 30.0 million of Class A Units in the bpJV and bp also receiving 20.0 million of Class B Units in the bpJV. bp’s initial $50.0 million contribution was made on April 13, 2021. Pursuant to the bp JV Agreement, we had the option, exercisable prior to August 31, 2021 (the “bp Option”), to commit an additional $20.0 million to the bpJV upon which bp’s Class B Units would convert into Class A Units. On June 21, 2021, we contributed $50.2 million consisting of our initial contribution commitment of $30.0 million, the $20.0 million additional contribution to exercise our bp Option, plus $0.2 million of interest in accordance with the bp JV Agreement to effect the conversion of bp’s Class B Units into Class A Units.

In December 2021, the bpJV issued a capital call (the “bpJV Capital Call”) for additional funding of $143.2 million to construct ADG RNG projects under the bpJV. Pursuant to the bpJV Capital Call, we and bp were each required to contribute $71.6 million to the bpJV. On December 31, 2021, we and bp each contributed $20.0 million and $71.6 million, respectively, to the bpJV in connection with the bpJV Capital Call. On June 30, 2022, we paid the remaining outstanding contribution balance of $51.6 million to the bpJV and satisfied our capital contribution commitment under the bpJV Capital Call.

On March 30, 2022, the bpJV issued a second capital call (the “bpJV Capital Call 2”) in the amount of $76.2 million to provide capital for ADG RNG projects under the bpJV and to fund bpJV’s working capital needs. On September 30, 2022, we and bp each contributed $38.1 million to the bpJV in connection with the bpJV Capital Call 2.

Amazon. On April 16, 2021, we entered into a Project Addendum to Fuel Pricing Agreement (“Fuel Agreement”) with Amazon Logistics, Inc., a subsidiary of Amazon.com, Inc. (“Amazon”), and a Transaction Agreement with Amazon (the “Transaction Agreement”), pursuant to which, among other things, we issued to Amazon.com NV Investment Holdings LLC, a subsidiary of Amazon (“Amazon Holdings”), a warrant to purchase up to an aggregate of 53,141,755 shares (the “Warrant Shares”) of our common stock at an exercise price of $13.49 per share, which was a 21.3% premium to the $11.12 closing price of our common stock on April 15, 2021.

The Warrant Shares vest in multiple tranches, the first of which for 13,283,445 Warrant Shares vested upon execution of the Fuel Agreement. Subsequent tranches will vest over time based on fuel purchases by Amazon and its affiliates, up to a total of $500 million in fuel purchases, excluding any payments attributable to “Pass Through Costs,” which consist of all costs associated with the delivered cost of gas and applicable taxes determined by reference to the selling price,

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gallons or gas sold. Importantly, in order for all the vesting conditions of the warrant to be satisfied, Amazon would have to purchase hundreds of millions of GGEs of RNG from us.

Under the Transaction Agreement, we were required to use commercially reasonable efforts to obtain the approval of our stockholders with respect to the issuance of Warrant Shares in excess of 50,595,531 shares of our common stock, pursuant to The Nasdaq Stock Market LLC’s Listing Rule 5635(b) (the “Stockholder Approval”). On June 14, 2021, we obtained the Stockholder Approval at our 2021 annual meeting of stockholders.

In accordance with the terms of the warrant, as a result of the issuance of shares of our common stock pursuant to the ATM Programs (as defined below), on June 14, 2021, the number of shares of our common stock that may be purchased pursuant to the warrant, at an exercise price of $13.49 per share, increased by an aggregate of 5,625,959 shares (the “Additional Warrant Shares”). The Additional Warrant Shares vest in multiple tranches, the first of which for 1,406,490 Additional Warrant Shares vested on June 14, 2021. Subsequent tranches of the Additional Warrant Shares will vest over time based on fuel purchases by Amazon and its affiliates, consistent with the vesting schedule for the Warrant Shares as described above. The right to exercise the warrants and receive the Warrant Shares and Additional Warrant Shares (the “Amazon Warrant”) that have vested expires April 16, 2031.

We believe our commercial partnership with Amazon will enhance our strategies, initiatives and efforts to achieve our goals to grow fleet and other consumer support for the use of RNG as a vehicle fuel for our target customers and geographies. We also believe the proceeds from the issuance of our common stock to Amazon in the event Amazon were to vest and then exercise the Amazon Warrant in part or as a whole for cash would enhance our liquidity in support of our operations, as well as our ability to execute our business plans and pursue opportunities for further growth. Accordingly, we believe securing this commercial partnership and incentiving Amazon to purchase the maximum amount of fuel under the Fuel Agreement is important for our business strategy. As a result of the immediate vesting of a portion of the Amazon Warrant, we recognized non-cash stock-based sales incentive contra-revenue charges (“Amazon Warrant Charges”) in the second quarter of 2021 of $76.6 million and a customer incentive asset of $38.4 million representing Amazon Warrant Charges associated with future contractually required minimum fuel purchases which will be recognized as the fuel is purchased.

For the year ended December 31, 2022, Amazon Warrant Charges were $24.3 million all of which were associated with fuel purchases. As of December 31, 2022, we had a customer incentive asset of $22.2 million, classified in “Prepaid expenses and other current assets,” in the accompanying consolidated balance sheets.

AFTC. Under separate pieces of U.S. federal legislation, we were eligible to receive AFTC for the natural gas vehicle fuel sales made between October 1, 2006 and December 31, 2021. The AFTC credit was equal to $0.50 per GGE of CNG that we sold as vehicle fuel, and $0.50 per diesel gallon of LNG that we sold as vehicle fuel in 2020 and 2021. The Inflation Reduction Act of 2022, enacted in August 2022, reinstated and extended the AFTC incentive for three years through December 31, 2024, beginning retroactively to January 1, 2022. Under the extension period, AFTC incentive remains at $0.50 per GGE of CNG and $0.50 per diesel gallon of LNG that we sell as vehicle fuel through 2024.

Riverstone Credit Partners. On December 22, 2022, we entered into a four-year $150.0 million sustainability-linked senior secured first lien term loan with certain affiliates of, or funds managed by, Riverstone Credit Partners L.P. (“Riverstone Credit Partners”), a dedicated credit investment platform managed by Riverstone Holdings LLC (“Riverstone”) that focuses on energy, power, decarbonization, and infrastructure. This financing provided us with additional capital to execute our RNG growth strategy, which includes the development of negative carbon intensity RNG projects and construction of new RNG fueling stations for transportation sector customers. Proceeds from the term loan will be used, in part, to accelerate our expansion and development of ADG RNG production projects. See Note 12 for more information about our outstanding debt.

NG Advantage Debt Refinancing and Extinguishment. On January 31, 2022, NG Advantage entered into a second amendment to the Amended and Restated Loan and Security Agreement with Berkshire Bank (the “Berkshire ALA”) (See Note 12) pursuant to which Berkshire Bank agreed to extend new term loans in an aggregate principal amount of $14.0 million (collectively, the “Berkshire Term Loan 2”) to NG Advantage. The Berkshire Term Loan 2 bore interest at an annual interest rate of 5% and had a maturity date of January 31, 2027. Payments for interest and principal were due

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monthly beginning March 1, 2022, with a final payment of remaining principal and interest due on the maturity date. Borrowings under the Berkshire Term Loan 2 were collateralized by NG Advantage’s trailers and station assets, and prepayment of the outstanding principal was permitted and subject to prepayment premiums. NG Advantage used the proceeds from the Berkshire Term Loan 2 to extinguish $11.1 million of existing financing obligations, consisting of $10.4 million in cash payoffs and an application of $0.8 million in deposits held with the former lenders. As a result of the extinguishment, we recognized a $2.3 million loss on extinguishment of debt, which is included in “interest expense” in the accompanying consolidated statements of operations for the year ended December 31, 2022. In connection with the second amendment to the Berkshire ALA, Berkshire Bank released $7.0 million, classified in “Long-term portion of restricted cash” in the accompanying consolidated balance sheets as of December 31, 2021, to the Company related to the Company’s limited guaranty under the Berkshire ALA.

On December 22, 2022, pursuant to the term loan credit agreement with Riverstone Credit Partners, NG Advantage fully repaid all outstanding principal balances and related accrued and unpaid interest under the Berkshire ALA and the Berkshire Term Loan 2. In connection with the extinguishments of debt under the Berkshire ALA and the second amendment to the Berkshire ALA, NG Advantage recognized a $1.1 million loss on debt extinguishment, which is included in “interest expense” in the accompanying consolidated statements of operations for the year ended December 31, 2022.

Plains Credit Facility. On May 1, 2021, we entered into a Loan and Security Agreement (the “Plains LSA”) with PlainsCapital Bank (“Plains”) that provided us a $20.0 million revolving line of credit through May 1, 2022. In May 2022, the Plains LSA was renewed and extended through May 1, 2023. The interest rate on amounts outstanding under the Plains LSA was the greater of the Prime Rate or 3.25%. On September 16, 2021, Plains issued an irrevocable standby letter of credit on behalf of the Company to the Chevron Products Company, a division of Chevron U.S.A. Inc. (“Chevron”), for $2.0 million relating to the Company’s Adopt-A-Port program with Chevron. The standby letter of credit was valid until cancelled and was collateralized by the Company’s revolving line of credit with Plains, reducing the amount available under the line of credit from $20.0 million to $18.0 million. On January 31, 2022, Plains issued an irrevocable standby letter of credit on behalf of the Company to Berkshire Bank for $7.0 million as collateral under the second amendment to the Berkshire ALA. However, pursuant to the Riverstone Credit Agreement, on December 22, 2022, the Plains LSA was terminated. Concurrently, the irrevocable standby letter of credit issued to Berkshire Bank in connection with the second amendment to the Berkshire ALA was cancelled. As a result, we deposited $2.0 million, in the form of a certificate of deposit, at Plains that serves as a security collateral for the standby letter of credit issued to Chevron. The $2.0 million is classified as short-term restricted cash and a current asset and is included in “Cash, cash equivalents and current portion of restricted cash” in the accompanying consolidated balance sheets as of December 31, 2022.

Share Repurchase Program. On March 12, 2020, our Board of Directors approved a share repurchase program (the “Repurchase Program”) for up to $30.0 million (exclusive of fees and commissions) of our outstanding common stock. On December 7, 2021, our Board of Directors approved an increase in the aggregate purchase amount under the Repurchase Program from $30.0 million to $50.0 million (exclusive of fees and commissions). The Repurchase Program does not have an expiration date, does not obligate us to acquire any specific number of shares, and may be suspended or discontinued at any time. For the year ended December 31, 2022, we repurchased 1,190,254 shares of our common stock under the Repurchase Program for a total cost of $6.1 million (exclusive of fees and commissions) at an average price of $5.12 per share. As of December 31, 2022, we had used a total of $23.5 million under the Repurchase Program from its inception to repurchase 9,387,340 shares of our common stock and had a total of $26.5 million of authorized funds remaining under the Repurchase Program.

NG Advantage Fixed Supply Commitment. NG Advantage had entered into an arrangement with bp for the supply, sale and reservation of a specified volume of CNG transportation capacity through February 2022. In connection with that arrangement, in February 2018, we entered into a guaranty agreement with NG Advantage and bp, which was amended in June 2020, pursuant to which we guaranteed NG Advantage’s payment obligations to bp in the event of a default by NG Advantage under the supply arrangement, in an amount up to $15.0 million plus related fees. On February 28, 2022, the supply arrangement between NG Advantage and bp expired, and our obligations under the guaranty agreement were fully released.

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Fueling Station Equipment Removal. On July 7, 2022, we entered into an amendment to our Liquefied Natural Gas Fueling Station and LNG Master Sales Agreement with Pilot Travel Centers LLC (“Pilot”), dated August 2, 2010, to decommission and remove station equipment of select fueling stations located on Pilot’s premises as agreed to in a phased removal schedule. The removal of the fueling station equipment and site improvements commenced in the third quarter of 2022 and is expected to be completed by the end of the first quarter of 2023. In connection with the removal of station equipment and site improvements, for the year ended December 31, 2022, we recognized $10.6 million in accelerated depreciation expense relating to the change in depreciable life of the affected station assets and $2.5 million in incremental asset retirement obligation charges.

At-The-Market Offerings. On May 10, 2021, we entered into an equity distribution agreement with Goldman Sachs & Co. LLC, as sales agent, to sell shares of our common stock having an aggregate offering price of up to $100.0 million in an at-the-market offering program (the “May ATM Program”). As of June 3, 2021, we sold 12,362,237 shares of our common stock under the May ATM Program, which exhausted the May ATM Program. On June 7, 2021, we entered into a new equity distribution agreement with Goldman Sachs & Co. LLC, as sales agent, to sell additional shares of our common stock having an aggregate offering price of up to $100.0 million in a new at-the-market offering program (the “June ATM Program” and, together with the May ATM Program, the “ATM Programs”). On June 8, 2021, we sold 10,473,946 shares of our common stock under the June ATM Program, which exhausted the June ATM Program.

For the year ended December 31, 2021, we issued 22,836,183 shares of our common stock under the ATM Programs for gross proceeds of $200.0 million, and incurred transaction costs of $6.5 million, including $6.0 million in commissions paid to Goldman Sachs & Co. LLC.

Debt Level and Debt Compliance

As of December 31, 2022, we had total indebtedness, excluding finance lease obligations, of $145.6 million in principal amount, of which $0.1 million is expected to become due in 2023. Certain of the agreements governing our outstanding debt, which are discussed in Note 12, have certain financial and non-financial covenants with which we must comply. As of December 31, 2022, we were in compliance with all of these covenants.

Key Trends

Market for RNG and conventional natural gas as a Vehicle Fuel

According to CARB, RNG and conventional natural gas are cleaner than gasoline and diesel fuel based on the GHG emissions produced by vehicles operated by these fuels. Additionally, RNG and conventional natural gas are generally less expensive for vehicle operators than gasoline and diesel on an energy equivalent basis. According to the U.S. Energy Information Administration, demand for renewable and conventional natural gas fuels in the United States has increased in recent years and is expected to continue to increase. We expect our sales of RNG and conventional natural gas to grow as more companies look to operate in an increasingly sustainable way. In addition to pressure from politicians, regulators and non-governmental organizations, the investment community has dramatically increased demands on companies to diminish their contributions to climate change. We believe that RNG is the best tool available today to reduce climate-harming GHG and meet sustainability objectives.

The market for our vehicle fuels, however, is a relatively new and developing market. As a result, it is difficult to accurately predict demand for our vehicle fuels, in general and in any specific geographic and customer markets, and consequently our timing and level of investment in particular markets may not be consistent with any growth in demand in these markets. Further, the new and developing nature of the market for our vehicle fuels has led to slow, volatile or unpredictable growth in many sectors. For example, to date, adoption and deployment of natural gas vehicles, both in general and in certain of our key customer markets, including heavy-duty trucking, have been slower than we anticipated.

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We believe challenging market conditions are caused by a number of factors, including the following:

To the extent these or other factors have contributed to curtailed demand or slowing growth in the market for our vehicle fuels, we believe they have also contributed to decreases in station construction activity in certain periods, as the success of this activity is dependent on the success of the market for our vehicle fuels generally. Moreover, we believe these factors have materially contributed to the volatility and declines in our stock price and market capitalization in recent years, which has and could in the future lead to decreased cash flows and indications of asset or goodwill impairment. If these adverse macroeconomic conditions and other uncertainties in our industry persist, our financial results and stock price may continue to be adversely affected.

In spite of these market conditions, we believe our key customer markets, including heavy-duty trucking, airports, refuse, and public transit, are well-suited for the adoption of our vehicle fuels because they consume relatively high volumes of fuel, refuel at centralized locations or along well-defined routes and/or are facing increasingly stringent emissions or other environmental requirements. We also expect the lower GHG emissions associated with our RNG vehicle fuel will result in increased demand for this fuel, resulting in our continued delivery of increasing volumes of RNG to our vehicle fleet customers. Additionally, we anticipate that, over time, cities and communities in the United States and Canada will follow large cities in Europe in banning diesel vehicles. If these projections materialize, we believe there will be growth in the consumption of our vehicle fuels in our key customer and geographic markets, and our goal is to capitalize on this growth if and when it materializes. In that event, we expect our operating costs and capital expenditures would increase in connection with any growth of our business in the future.

Our Performance

Overview. Our gross revenue mostly consists of volume-related product and service revenue and station construction sales. Our revenue can vary between periods due to a variety of factors, including, among others, the amount and timing of vehicle fuel sales, natural gas commodity prices, station construction sales, sales of Environmental Credits, and recognition of government credits, grants and incentives, such as AFTC. In addition, our volume-related product revenue has been and may continue to be subject to fluctuations as a result of our entry into certain commodity swap arrangements in October 2018, because the changes in fair value of these and certain other derivative instruments, including existing and anticipated fueling contracts under our Zero Now truck financing program, are included in volume-related product revenue. Furthermore, our volume-related product revenue has been affected by the Amazon Warrant Charges resulting from

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immediate vesting of a portion of the Amazon Warrant and subsequent vesting associated with fuel purchases made by Amazon and its affiliates.

Our cost of sales can also vary between periods due to a variety of factors, including fluctuations in natural gas commodity prices, station construction and labor costs, as well as the other factors that impact our revenue levels described above.

In addition, our performance in certain periods has been affected by transactions or events that have resulted in significant cash or non-cash gains or losses. Such gains or losses may not recur regularly, in the same amounts or at all in future periods and, with respect to non-cash gains and losses, do not impact our liquidity.

These significant fluctuations in our operating results may render period-to-period comparisons less meaningful, especially given the current uncertainties relating to macro-economic growth, inflation trends, and the ongoing effect of the COVID-19 pandemic, and investors in our securities should not rely on the results of one period as an indicator of performance in any other period. Additionally, these fluctuations in our operating results could cause our performance in any period to fall below the financial guidance we may have provided to the public or the estimates and projections of the investment community, which could negatively affect the price of our common stock.

See “Results of Operations” below for more information about our performance in 2021 and 2022.

Volume. The amount of RNG and conventional natural gas, in the form of CNG and LNG, that we sold increased by 8.9% from 2021 to 2022 primarily due to the effect of COVID-19 restrictions being lifted and an increase in economic activities and travel generally.

The amount of RNG we sell as vehicle fuel, which is delivered in the form of CNG or LNG, has continued to experience robust growth, and increased by 18.7% from 2021 to 2022. We believe the increased demand for RNG is attributable to the belief in the dramatic reduction in the amount of climate-harming greenhouse gas that can be achieved through the use of RNG and pressure from politicians, regulators, non-governmental organizations and the investment community directed at companies to reduce their contributions to GHG emissions. To the extent demand for RNG continues to increase, we expect our joint venture(s) with TotalEnergies and bp and our expanded supply agreements to increase our volume-related product revenue due to increased volumes of RNG vehicle fuel sold and increased generation of RINs and LCFS Credits. In addition, such an increase in RNG demand could also result in more robust competition for supplies of RNG, including from other vehicle fuel providers, gas utilities (which may have distinct advantages in accessing RNG supply, including potential use of ratepayer funds to fund RNG purchases if approved by a utility’s regulatory commission) and other users and providers. We expect to invest in production projects to help ensure that we have adequate supply of RNG, and we are pursuing development and ownership of livestock waste ADG projects on our own and with partners including TotalEnergies and bp.

Environmental Credits. When we sell RNG and conventional natural gas for use as a vehicle fuel, we are eligible to generate RINs and LCFS Credits, which we then seek to sell to third parties.

The markets for RINs and LCFS Credits have been volatile and unpredictable in recent periods, and the prices for these credits have been subject to significant fluctuations. For example, in 2022, market prices for RINs have been as high as $3.56 and as low as $2.47. Additionally, the value of RINs and LCFS Credits, and consequently the revenue levels we may receive from our sale of these credits, may be adversely affected by changes to the federal and state programs under which these credits are generated and sold, prices for and use of oil, diesel or gasoline, the inclusion of additional qualifying fuels in the programs, increased production levels of other fuels in the programs, or other conditions. Further, our ability to generate revenue from sales of these credits depends on our strict compliance with these federal and state programs, which are complex and can involve a significant degree of judgment. If the agencies that administer and enforce these programs disagree with our judgments, otherwise determine we are not in compliance, conduct reviews of our activities or make changes to the programs, then our ability to generate or sell these credits could be temporarily restricted pending completion of reviews or as a penalty, permanently limited or lost entirely, and we could be subject to fines or other sanctions. Any of these outcomes could force us to purchase credits in the open market to cover any credits we have

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contracted to sell, retire credits we may have generated but not yet sold, reduce or eliminate a significant revenue stream or incur substantial additional and unplanned expenses.

Risk Management Activities

From time to time, we enter into fuel sales contracts that require us to sell CNG or LNG to our customers at a fixed price. These contracts expose us to the risk that the price of natural gas commodity may increase above the natural gas commodity cost component included in the price at which we are committed to sell the natural gas to our customers.

In an effort to mitigate the volatility of our earnings related to any futures contracts and to reduce our risk related to our fixed price sales contracts, we operate under a hedging policy pursuant to which we purchase futures contracts to hedge our exposure to variability in expected future cash flows related to a particular fixed price contract or bid. Subject to the conditions set forth in the policy, we purchase futures contracts in quantities reasonably expected to effectively hedge our exposure to cash flow variability related to fixed price sales contracts entered into after the date of the policy. Unless otherwise agreed in advance by our Board of Directors and the derivatives committee thereof, we will conduct our futures contract activities and enter into fixed price sales contracts only in accordance with our hedging policy.

Due to the restrictions of our hedging policy, we expect to offer few fixed price sales contracts to our customers. If we do offer a fixed price sales contract, we anticipate including a price component that would cover our estimated cash requirements over the duration of the underlying futures contracts. The amount of this price component will vary based on the anticipated volume and the natural gas price component to be covered under the fixed price sales contract.

In October 2018, in support of our Zero Now truck financing program, we executed two commodity swap contracts with TotalEnergies Gas & Power North America, an affiliate of TotalEnergies and THUSA, for a total of five million diesel gallons annually from April 1, 2019 to June 30, 2024. These commodity swap contracts are intended to manage risks related to the diesel-to-natural gas price spread in connection with the natural gas fuel supply commitments we have made and expect to make in our current and anticipated fueling agreements with fleet operators that participate in the Zero Now program.

Critical Accounting Policies and Estimates

This discussion is based upon our consolidated financial statements included in this report, which have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates and may result in material effects on our operating results and financial position.

We believe the critical accounting policies discussed below affect our more significant estimates made in preparing our consolidated financial statements. See Notes 1 and 2 for more information about these and our other significant accounting policies.

Revenue Recognition

In general, revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration to which we expect to be entitled in exchange for the goods or services. To achieve that core principle, a five-step approach is applied: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue allocated to each performance obligation when we satisfy the performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account for revenue recognition.

We recognize revenue on various products and services.

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Our volume-related product revenue consists of sales of RNG and conventional natural gas, in the form of CNG and LNG, AFTC incentives, and sales of RINs and LCFS Credits in addition to Amazon Warrant Charges and changes in fair value of our derivative instruments.

RNG and conventional natural gas are sold pursuant to contractual commitments over defined delivery periods. These contracts typically include a stand-ready obligation to supply natural gas. We recognize fuel revenue in the amount to which we have the right to invoice. We have a right to consideration based on the amount of GGEs of fuel dispensed by the customer and current pricing conditions. Customers are typically billed on a monthly basis. Since payment terms are less than a year, we have elected the practical expedient which allows us to not assess whether a customer contract has a significant financing component.

Our service revenue consists of sales of O&M and other services. O&M and other services are sold pursuant to contractual commitments over defined performance periods. These contracts typically include a stand-ready obligation to provide O&M and/or other services based on a committed and agreed upon routine maintenance schedule or when and if called upon by the customer.

We recognize O&M and other services revenue in the amount to which we have the right to invoice. We have a right to consideration based on services rendered or on the amount of GGEs of fuel dispensed by the customer multiplied by an agreed-upon rate. Customers are typically billed on a monthly basis. Since payment terms are less than a year, we have elected the practical expedient which allows us to not assess whether a customer contract has a significant financing component.

We sell RIN Credits and LCFS Credits to third parties that need the credits to comply with federal and state requirements. Revenue is recognized on these credits when there is an agreement in place to monetize the credits at a determinable price and the RNG fuel has been sold. The sales price for some environmental credit transactions may not be determinable in the period during which the RNG was sold as pricing is established in the quarter after the RNG was sold. In these circumstances, revenue from RIN and LCFS credits is recognized once the sales price has been established and therefore is considered determinable.

Changes in fair value of derivative instruments relates to our commodity swap and certain customer fueling contracts under our Zero Now truck financing program. The contracts are measured at fair value with changes in the fair value recorded in our consolidated statements of operations in the period incurred. The amounts are classified as revenue because our commodity swap contracts are used to economically offset the risk associated with the diesel-to-natural gas price spread resulting from existing and anticipated customer fueling contracts under our Zero Now truck financing program.

Amazon Warrant Charges are determined based on the grant date fair value of the award, and the associated non-cash stock-based sales incentive charges, which are recorded as a reduction of revenue, are recognized as the customer purchases fuel and vesting conditions become probable of being achieved. See Note 1 for additional information.

Station construction contracts are generally short-term, except for certain larger and more complex stations, which can take up to 24 months to complete. For most of our station construction contracts, the customer contracts with us to provide a significant service of integrating a complex set of tasks and components into a single station. Hence, the entire contract is accounted for as one performance obligation.

We recognize station construction revenue over time as we perform under these contracts because of the continual transfer of control of the goods to the customer, who typically controls the work in process. Revenue is recognized based on the extent of progress towards completion of the performance obligation and is recorded proportionally as costs are incurred. Costs to fulfill our obligations under these contracts typically include labor, materials and subcontractors’ costs, other direct costs and an allocation of indirect costs.

Refinements of estimates to account for changing conditions and new developments are continuous and characteristic of the process. Many factors that can affect contract profitability may change during the performance period of the contract, including differing site conditions, the availability of skilled contract labor, the performance of major suppliers and subcontractors, and unexpected changes in material costs. Because a significant change in one or more of these estimates

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could affect the profitability of these contracts, the contract price and cost estimates are reviewed periodically as work progresses and adjustments proportionate to the cost-to-cost measure of progress are reflected in contract revenues in the reporting period when such estimates are revised as discussed above. Provisions for estimated losses on uncompleted contracts are recorded in the period in which the losses become known.

In certain contracts with our customers, we agree to provide multiple goods or services, including construction of and sale of a station, O&M services, and sale of fuel to the customer. These contracts have multiple performance obligations because the promise to transfer each separate good or service is separately identifiable and distinct. This evaluation requires significant judgment and the decision to combine a group of contracts or separate the combined or single contract into multiple performance obligations could change the amount of revenue recognized in one or more periods.

We allocate the contract price to each performance obligation using best estimates of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate the standalone selling price for fuel and O&M services is observable standalone sales, and the primary method used to estimate the standalone selling price for station construction sales is the expected cost plus a margin approach because we sell customized customer-specific solutions. Under this approach, we forecast expected costs of satisfying a performance obligation and then add an appropriate margin for the good or service.

AFTC is considered variable consideration because it can either increase or decrease the transaction price based on volumes of vehicle fuel sold. Additionally, AFTC is not recognized as revenue until it is authorized through federal legislation, which also provides a determinable price. We recognize revenue in the period the credit is authorized through federal legislation.

We collect and remit taxes assessed by various governmental authorities that are imposed on and concurrent with revenue-producing transactions between us and our customers. These taxes may include, among others, fuel, sales and value-added taxes. We report the collection of these taxes on a net basis and they are excluded from revenue and cost of sales.

Income Taxes

Income taxes are computed using the asset and liability method. Under this method, deferred income taxes are recognized by applying enacted statutory tax rates applicable to future years to differences between the tax bases and financial carrying amounts of existing assets and liabilities. The impact on deferred taxes of changes in tax rates and laws, if any, are applied to the years during which temporary differences are expected to be settled and are reflected in the consolidated financial statements in the period of enactment. Valuation allowances are established when management determines it is more likely than not that deferred tax assets will not be realized. When evaluating the need for a valuation analysis, we use estimates involving a high degree of judgment including projected future U.S. GAAP income and the amounts and estimated timing of the reversal of any deferred tax assets and liabilities.

We have a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not sustainable upon examination by taxing authorities based on the technical merits of the position. The amount recognized is measured as the largest amount of benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. We recognize potential accrued interest and penalties related to unrecognized tax benefit in income tax expense.

We operate within multiple domestic and foreign taxing jurisdictions and are subject to audit in these jurisdictions. These audits can involve complex issues, which may require an extended period of time to resolve. Although we believe that adequate consideration has been given to these issues, it is possible that the ultimate resolution of these issues could be significantly different than originally estimated.

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Fair Value Measurements

We have established a framework that follows the authoritative guidance for fair value measurements with respect to assets and liabilities that are measured at fair value on a recurring basis and non-recurring basis. Under the framework, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants, as of the measurement date. The framework also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of our Company. Unobservable inputs are inputs that reflect our assumptions about the factors market participants would use in valuing the asset or liability and are developed based upon the best information available in the circumstances. The hierarchy consists of the following three levels: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly; Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Our significant uses of fair value measurements include the valuation of commodity swaps, customer contracts, and available-for-sale debt securities, all of which require significant judgment.

Recently Adopted Accounting Pronoucements and Recently Issued Accounting Pronouncements.

See Note 1 for information about recently adopted accounting pronouncements and recently issued accounting pronouncements.

Results of Operations

The discussions below compare our results of operations in 2022 and 2021. Historical results are not indicative of the results to be expected in the current period or any future period.

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2022 Compared to 2021

The table below presents, for each period, each line item of our statement of operations as a percentage of our total revenue for the period. The narrative that follows provides a comparative discussion of certain of these line items between periods.

​ ​ ​ ​ ​ ​

​ ​ Year Ended

​ ​ December 31, ​

Statements of Operations Data: ​

Revenue: ​

Operating expenses: ​

Product cost of sales 74.2 66.6 ​

Service cost of sales 10.2 6.7 ​

Selling, general and administrative 35.2 26.1 ​

Depreciation and amortization 17.7 13.0 ​

Interest expense (1.7) (1.5) ​

Interest income 0.4 0.8 ​

Other income, net 0.4 — ​

Loss from equity method investments (0.2) (1.1) ​

Gain from sale of certain assets of subsidiary 1.5 — ​

Loss before income taxes (36.8) (14.1) ​

Income tax expense — (0.1) ​

Loss attributable to noncontrolling interest 0.4 0.2 ​

Net loss attributable to Clean Energy Fuels Corp. (36.4) % (14.0) %

Product revenue. Product revenue for 2022 increased by $159.9 million to $373.0 million, representing 88.8% of total revenue, compared to $213.1 million, representing 83.4% of total revenue, for 2021. The increase was due to (1) higher prices of fuel sold and an increase in total GGEs of fuel sold, resulting in $90.9 million increase in product revenue from 2021 to 2022, (2) a $59.3 million decrease in non-cash stock-based sales incentive contra-revenue charges related to the Amazon Warrant, (3) an increase in RIN revenue of $2.9 million resulting from higher GGEs of RNG sold and higher average RIN prices in 2022 compared to those in 2021, (4) an increase in AFTC revenue of $1.1 million from 2021 to 2022, (5) an increase in station construction sales of $5.9 million due to increased construction activities, and (6) a change in fair value of our commodity swap and customer contracts entered into in connection with our Zero Now truck financing program, as we recognized an unrealized gain of $0.5 million in 2022 compared to an unrealized loss of $3.5 million in 2021. The increase in product revenue between periods was partially offset by a decrease in LCFS revenue of $4.2 million resulting from lower average LCFS prices in 2022 compared to those in 2021.

Service revenue. Service revenue for 2022 increased $4.7 million to $47.2 million, representing 11.2% of total revenue, compared to $42.5 million, representing 16.6% of total revenue, for 2021. The increase was primarily due to an increase in GGEs serviced in 2022 as compared to that in 2021.

Product cost of sales. Product cost of sales for 2022 increased by $90.1 million to $279.7 million, representing 66.6% of total revenue, from $189.6 million, representing 74.2% of total revenue, in 2021. The increase was primarily due to an increase in GGEs of fuel sold, an increase in natural gas prices, and a $4.4 million increase in the cost of station construction activities.

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Service cost of sales. Service cost of sales for 2022 increased by $2.0 million to $28.0 million, representing 6.7% of total revenue, from $26.0 million, representing 10.2% of total revenue, in 2021. The increase was primarily due to an increase in GGEs serviced in 2022 as compared to that in 2021.

Selling, general and administrative. Selling, general and administrative expenses increased by $19.6 million to $109.5 million in 2022, from $89.9 million in 2021. The increase was primarily driven by (1) a $11.5 million increase in stock-based compensation expense due to a full year of expense recognized in 2022 relating to equity awards granted in 2021, (2) a $5.7 million increase in salaries and benefits, and (3) a $2.3 million increase in legal, consulting and other professional fees.

Depreciation and amortization. Depreciation and amortization increased by $9.5 million to $54.7 million in 2022, from $45.2 million in 2021. The increase was primarily due to the recognition of accelerated depreciation expense and asset retirement obligation charges relating to the Pilot fueling station decommission and removal that began in the third quarter of 2022. The increase in depreciation expense was partially offset by a lower amount of depreciable assets.

Interest expense. Interest expense increased by $1.9 million to $6.3 million in 2022, from $4.4 million in 2021. The increase was primarily due to a $3.4 million loss from extinguishment of debt relating to the full repayment of outstanding debt under the Berkshire ALA and the second amendment to the Berkshire ALA (see Note 12) and certain financing obligations of NG Advantage. The increase was partially offset by lower average outstanding indebtedness between periods.

Other income, net. Other income, net decreased by $0.8 million to $0.1 million in 2022, from $0.9 million in 2021, primarily due to certain other fees earned in the prior year period.

Loss from equity method investments. Loss from equity method investments increased by $4.4 million to $4.8 million in 2022, from $0.4 million in 2021, primarily due to the operating results of SAFE&CEC S.r.l. and our joint venture(s) with TotalEnergies and bp.

Gain from sale of certain assets of subsidiary. No gain was recognized in 2022 as compared to a gain of $3.9 million recognized in 2021. The gain recorded in prior year was a result of the satisfaction of specified performance criteria in 2021 (the final year of the earnout) related to the assets sold in the bp Transaction (as defined in Note 3) in accordance with the related Amended APA (as defined in Note 3).

Income tax expense. Income tax expense increased by $0.1 million to $0.2 million in 2022, from $0.1 million in 2021, primarily due to an increase in deferred taxes associated with goodwill.

Loss attributable to noncontrolling interest. In 2022 and 2021, we recorded a gain of $0.9 million and $1.0 million, respectively, for the noncontrolling interest in the net loss of NG Advantage. The noncontrolling interest in NG Advantage represents a 6.7% minority interest that was held by third parties during both the 2022 and 2021 periods.

Seasonality and Inflation

To some extent, we experience seasonality in our results of operations. Some of our customers tend to consume more of our vehicle fuels in the summer months, when buses and other fleet vehicles use more fuel to power their air conditioning systems, which typically translate to an increased volume of fuel sold in the summer months. In addition, natural gas commodity prices tend to be higher in the fall and winter months, due to increased overall demand for natural gas for heating during these periods.

Historically, inflation has not significantly affected our operating results; however, costs for construction, repairs, maintenance, electricity and insurance are all subject to inflationary pressures, which could affect our ability to maintain our stations adequately, build new stations, expand our existing facilities or pursue additional facilities, and could materially impact our operating costs.

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Liquidity and Capital Resources

Liquidity

Liquidity is the ability to meet present and future financial obligations through operating cash flows, the sale or maturity of investments or the acquisition of additional funds through capital management. Our financial position and liquidity are, and will continue to be, influenced by a variety of factors, including the level of our outstanding indebtedness and the principal and interest we are obligated to pay on our indebtedness; the amount and timing of any capital calls related to the joint venture(s) with TotalEnergies and/or bp, or any other joint venture we may enter into in the future; the amount and timing of any additional debt or equity financing we may pursue; our capital expenditure requirements; any merger, divestiture or acquisition activity; and our ability to generate cash flows from our operations. We expect cash provided by our operating activities to fluctuate as a result of a number of factors, including our operating results and the factors that affect these results, including the amount and timing of our vehicle fuel sales, station construction sales, sales of RINs and LCFS Credits and recognition of government credits, the continuing direct and indirect effects of the COVID-19 pandemic, grants and incentives, if any; fluctuations in commodity, station construction and labor costs; environmental credit prices; variations in the fair value of certain of our derivative instruments that are recorded in revenue; and the amount and timing of our billing, collections and liability payments.

Cash Flows

Operating Activities. Cash provided by operating activities was $66.7 million in 2022, compared to cash provided by operating activities of $41.3 million in 2021. The increase in cash provided by operating activities in 2022 was primarily attributable to the collection of AFTC receivables in 2022 relating to 2021 and 2022 fuel volumes and changes in working capital resulting from the timing of receipts, accruals, billings and payments of cash.

Investing Activities. Cash used in investing activities was $148.5 million in 2022, compared to cash used in investing activities of $207.7 million in 2021. The decrease in cash used in investing activities in 2022 was primarily attributable to $8.4 million in net purchases of short-term investments in 2022, compared to $100.2 million in net purchases of short-term investments in 2021, a $3.0 million increase in net earnout proceeds received in connection with the bp Transaction, partially offset by a $21.4 million increase in capital expenditures in 2022, higher investments in other entities, including our $89.7 million contribution to the bpJV, and a $2.6 million decrease in proceeds from property and equipment disposals.

Financing Activities. Cash provided by financing activities was $101.6 million in 2022, compared to $152.8 million provided by financing activities in 2021. The decrease in cash provided by financing activities in 2022 was primarily attributable to the net proceeds received from the issuance of common stock in connection with our ATM Programs in 2021 (there were no ATM program activities in 2022), a $3.2 million increase in common stock repurchases, higher payment of debt extinguishment costs of $3.2 million, and a $4.4 million decrease in reimbursement proceeds relating to the Adopt-A-Port Program, partially offset by $155.5 million increase in proceeds received from the issuance of debt.

Capital Expenditures, Indebtedness and Other Uses of Cash

We require cash to fund our capital expenditures, operating expenses and working capital and other requirements, including costs associated with fuel sales; outlays for the design and construction of new fueling stations; additions or other modifications to existing fueling stations; RNG production facilities; debt repayments and repurchases; repurchases of common stock; purchases of heavy-duty trucks that use our fuels; additions or modifications of LNG production facilities; supporting our operations, including maintenance and improvements of our infrastructure; supporting our sales and marketing activities, including support of legislative and regulatory initiatives; financing vehicles for our customers; any investments in other entities; any mergers or acquisitions, including acquisitions to expand our RNG production capacity; pursuing market expansion as opportunities arise, including geographically and to new customer markets; and to fund other activities or pursuits and for other general corporate purposes.

Our business plan calls for approximately $90.0 million in capital expenditures in 2023. These capital expenditures primarily relate to the construction of fueling stations, IT software and equipment and LNG plant costs, and we expect to fund these expenditures primarily through cash on hand and cash generated from operations. Further, in 2023, we anticipate

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deploying up to approximately $40.0 million to develop ADG RNG production facilities. In 2022, we contributed $89.7 million to the bpJV. As of December 31, 2022, we have contributed $178.0 million into developing ADG RNG production facilities.

We had total indebtedness, consisting of our debt and finance leases, of approximately $153.1 million in principal amount as of December 31, 2022, of which approximately $1.0 million, $1.4 million, $0.6 million, and $150.1 million is expected to become due in 2023, 2024, 2025, and 2026, respectively. Based on our outstanding indebtedness and applicable interest rates as of December 31, 2022, we expect our total interest payment obligations relating to our indebtedness to be approximately $16.8 million for the year ending December 31, 2023. We plan to and believe we are able to make all expected principal and interest payments in the next 12 months.

We also have indebtedness, including the amount representing interest, from our operating leases of approximately $84.0 million as of December 31, 2022, of which approximately $8.1 million, $8.1 million, $8.1 million, $8.0 million, $7.9 million and $43.8 million is expected to become due in 2023, 2024, 2025, 2026, 2027 and thereafter, respectively.

We intend to make payments under our various debt instruments when due and pursue opportunities for earlier repayment and/or refinancing if and when these opportunities arise. Although we believe we have sufficient liquidity and capital resources to repay our debt coming due in the next 12 months, we may elect to suspend, or limit repurchases under, our share repurchase program or pursue alternatives, such as refinancing, or debt or equity offerings, to increase our cash management flexibility.

Sources of Cash

Historically, our principal sources of liquidity have consisted of cash on hand, cash provided by our operations, including, if available, AFTC and other government credits, grants and incentives, cash provided by financing activities, and sales of assets. In August 2022, AFTC was reinstated and extended and applies retroactively to vehicle fuel sales made beginning January 1, 2022. For the year ended December 31, 2022, we recognized $21.8 million in AFTC revenue, and, as of December 31, 2022, excluding current portion of restricted cash, we had total cash and cash equivalents and short-term investments of $263.5 million, compared to $229.2 million as of December 31, 2021.

We expect cash provided by our operating activities to fluctuate depending on our operating results, which can be affected by the factors described above, as well as the other factors described in this MD&A and Item 1A. “Risk Factors” of this report.

Subject to the following paragraph, we believe our cash and cash equivalents and short-term investments and anticipated cash provided by our operating and financing activities will satisfy our business requirements for at least the 12 months following the date of this report. Subsequent to that period, we may need to raise additional capital to fund any planned or unanticipated capital expenditures, investments, debt repayments, share repurchases or other expenses that we cannot fund through cash on-hand, cash provided by our operations or other sources. Moreover, we may use our cash resources faster than we predict due to unexpected expenditures, the direct and indirect impacts of the COVID-19 pandemic, or higher-than-expected expenses, in which case we may need to seek capital from alternative sources sooner than we anticipate. The timing and necessity of any future capital raise would depend on various factors, including our rate and volume of, and prices for, natural gas fuel sales and other volume-related activity, the direct and indirect impacts of the COVID-19 pandemic, new station construction, debt repayments (either before or at maturity) and any potential mergers, acquisitions, investments, divestitures or other strategic relationships we may pursue, as well as the other factors that affect our revenue and expense levels as described in this MD&A and elsewhere in this report.

If we deploy additional capital to develop ADG RNG production facilities and fueling stations to support contracted RNG fueling volume, we could be required to raise additional capital.

We may raise additional capital through one or more sources, including, among others, obtaining equity capital, including through offerings of our common stock or other securities, obtaining new or restructuring existing debt, selling assets, or any combination of these or other potential sources of capital. We may not be able to raise capital when needed, on terms that are favorable to us or our stockholders or at all. Any inability to raise necessary capital may impair our ability

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to develop and maintain fueling infrastructure, invest in strategic transactions or acquisitions or repay our outstanding indebtedness and may reduce our ability to support and build our business and generate sustained or increased revenue.

Material Cash Requirements

The table below represents our material cash requirements, including the scheduled maturities of our contractual obligations and our commitments for capital expenditures as of December 31, 2022. This table excludes certain potential cash requirements because they may involve future cash payments that are considered uncertain and cannot be estimated because they vary based upon future conditions; however, the exclusion of these obligations should not be construed as an implication that they are immaterial, as they could significantly affect our short- and long-term liquidity and capital resource needs depending on a variety of future events, facts and conditions.

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ Payments Due by Period

​ ​ ​ ​ Less than ​ ​ ​ ​ ​ More than

Long-term take-or-pay contracts (4) ​ 5,178 ​ 3,223 ​ 1,955 ​ — ​ —

Construction contracts (5) ​ 69,801 ​ 69,801 ​ — ​ — ​ —

Capital expenditure for RNG project (6) ​ ​ 22,237 ​ ​ 22,237 ​ ​ ​ ​ ​ ​ ​ ​ ​

Off-Balance Sheet Arrangements

As of December 31, 2022, we had the following off-balance sheet arrangements that have had, or are reasonably likely to have, a material current or future effect on our financial condition, changes in financial condition, revenue or expenses, results of operations, liquidity, capital expenditures or capital resources:

● An outstanding loan commitment to an equity method investee;

● One long-term natural gas sale contract with a fixed supply commitment.

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We provide surety bonds primarily for construction contracts in the ordinary course of our business, as a form of guarantee. No liability has been recorded in connection with our surety bonds because, based on historical experience and available information, we do not believe it is probable that any amounts will be required to be paid under these arrangements for which we will not be reimbursed.

In November 2022, we entered into an agreement with one of our equity method investees pursuant to which we committed to make available up to $5.5 million in delayed draw loans to support the equity method investee’s working capital requirements.

As of December 31, 2022, we had quarterly fixed-price natural gas purchase contracts with take-or-pay commitments extending through June 2024.

In addition, as of December 31, 2022, we had a fixed supply arrangement with UPS for the supply and sale of 170.0 million GGEs of RNG through March 2026.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

In the ordinary course of our business, we are exposed to various market risks, including commodity price risks, risks related to foreign currency exchange rates, and risks related to fluctuations in interest rates.

Commodity Price Risk

We are subject to market risk with respect to our sales of natural gas, which have historically been subject to volatile market conditions. Our exposure to market risk is heightened when we have a fixed-price sales contract with a customer that is not covered by a futures contract, or when we are otherwise unable to pass through natural gas price increases to customers. Natural gas prices and availability are affected by many factors, including, among others, drilling activity, supply, weather conditions, overall economic conditions and foreign and domestic government regulations.

Natural gas costs represented $74.6 million, $111.8 million, and $182.4 million of our cost of sales in 2020, 2021, and 2022, respectively.

In October 2018, in support of our Zero Now truck financing program, we entered into two commodity swap contracts with TotalEnergies Gas & Power North America, an affiliate of TotalEnergies and THUSA, for a total of five million diesel gallons annually from April 1, 2019 to June 30, 2024. These commodity swap contracts are intended to manage risks related to the diesel-to-natural gas price spread associated with the natural gas fuel supply commitments we make in our fueling agreements with fleet operators who participate in the Zero Now truck financing program.

We have prepared a sensitivity analysis to estimate our exposure to price risk with respect to our commodity swap contracts. If the diesel-to-natural gas price spread were to fluctuate by 10% as of December 31, 2022, we would expect a corresponding fluctuation in the fair value of our commodity swap contracts of approximately $1.1 million.

Foreign Currency Exchange Rate Risk

For the year ended December 31, 2022, our primary exposure to foreign currency exchange rates relates to our Canadian operations that had certain outstanding accounts receivable and accounts payable denominated in Canadian dollar, which were not hedged.

We have performed a sensitivity analysis to estimate our exposure to market risk with respect to our monetary transactions denominated in a foreign currency. If the exchange rates on these assets and liabilities were to fluctuate by 10% from the rates as of December 31, 2022, we would expect a corresponding fluctuation in the value of the assets and liabilities of approximately $0.1 million, net.

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Interest Rate Risk

As of December 31, 2022, we had $150.0 million of debt that bears interest at a rate equal to either adjusted Term SOFR, the Federal Funds Effective Rate, or the Prime Rate plus a margin per annum. Thus, depending on our interest rate election during the period, our interest expense would fluctuate with a change in Term SOFR, the Federal Funds Effective Rate or the Prime Rate. If these rates were to increase or decrease by 1% for the year, the impact on our annual interest expense would be approximately $1.5 million.

Certain LIBOR tenors were discontinued after 2021 with other LIBOR tenors to be discontinued after June 2023. We intend to monitor the developments with respect to the discontinuance of LIBOR and work with our lenders to minimize the effect of such a discontinuance on our financial condition and results of operations; however, the effect of the anticipated discontinuance of LIBOR on us and our debt instruments remains uncertain. If our lenders have increased costs due to changes in LIBOR, we may experience potential increases in interest rates on our variable rate debt, which could adversely affect our interest expense, results of operations and cash flows.

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Item 8. Financial Statements and Supplementary Data.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

​ ​ ​

Page

Consolidated Financial Statements ​ ​

Reports of Independent Registered Public Accounting Firm (PCAOB ID 185) ​ 56

Consolidated Balance Sheets ​ 59

Consolidated Statements of Operations ​ 60

Consolidated Statements of Comprehensive Loss ​ 61

Consolidated Statements of Stockholders’ Equity ​ 62

Consolidated Statements of Cash Flows ​ 63

Notes to Consolidated Financial Statements ​ 64

Financial Statement Schedule ​ ​

Schedule II—Valuation and Qualifying Accounts ​ 114

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Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

Clean Energy Fuels Corp.:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Clean Energy Fuels Corp and subsidiaries (the Company) as of December 31, 2022 and 2021, the related consolidated statements of operations, comprehensive loss, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2022, and the related notes and financial statement schedule II (collectively, the consolidated financial statements). In our opinion, based on our audits and the report of the other auditors, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022 and 2021, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2022, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated February 28, 2023 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

We did not audit the consolidated financial statements of CE Bp Renew Co, LLC a 50 percent owned investee company. The Company’s investment in CE Bp Renew Co, LLC was $156.8 million and $69.8 million as of December 31, 2022 and 2021, respectively, and its loss from equity method investment of CE Bp Renew Co, LLC was $2.7 million, $0.4 million and $0 for the years 2022, 2021 and 2020, respectively. The consolidated financial statements of CE Bp Renew Co, LLC were audited by other auditors whose report has been furnished to us, and our opinion, insofar as it relates to the amounts included for CE Bp Renew Co, LLC, is based solely on the report of the other auditors.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the 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 consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated 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 consolidated 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 consolidated financial statements. We believe that our audits and the report of the other auditors provide a reasonable basis for our opinion.

Critical Audit Matter

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

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Fair value of embedded derivatives and commodity swaps

As discussed in Note 8 to the consolidated financial statements, the Company used the income approach to value its derivative assets and liabilities associated with its embedded derivatives in fueling agreements under its Zero Now truck financing program and the commodity swap contracts used to manage price risks related to these agreements. As of December 31, 2022, the Company recorded derivative assets and liabilities related to the embedded derivatives and commodity swaps of $6,755 thousand and $3,845 thousand, respectively. The Company used a discounted cash flow model to estimate the fair value of these embedded derivatives and commodity swaps, classified as Level 3 in the fair value hierarchy because they are valued using unobservable inputs.

We identified the assessment of the measurement of fair value for the embedded derivatives and commodity swaps as a critical audit matter due to the significant measurement uncertainty associated with the fair value of such instruments. There was a high degree of subjective auditor judgment in assessing the significant unobservable inputs, such as commodity forward curves and differentials applied to the commodity forward curves.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls related to the Company’s derivatives process. This included controls related to the (1) development of the significant unobservable inputs, including monitoring of changes to the inputs, and (2) relevance and reliability of observable inputs reasonably available. We inspected the underlying fueling agreements associated with the embedded derivatives, on a sample basis, to evaluate the existence and accuracy of inputs into the valuation model. We also confirmed directly with the counter-party to the commodity swap contracts and inspected the commodity swap contracts to evaluate the existence and accuracy of inputs into the valuation model, including confirming the relevant terms of the commodity swap contracts. We involved financial instrument valuation professionals with specialized skills and knowledge, who assisted in assessing the fair value of the embedded derivatives and commodity swaps by developing an estimate of the fair values of the embedded derivatives and commodity swaps using commodity forward curves and differentials applied to the commodity forward curves obtained from publicly available market data, and compared the results to the Company’s fair value estimates.

/s/ KPMG LLP

We have served as the Company’s auditor since 2001.

Irvine, California

February 28, 2023

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors

Clean Energy Fuels Corp.:

Opinion on Internal Control Over Financial Reporting

We have audited Clean Energy Fuels Corp and subsidiaries’ (the Company) internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2022 and 2021, the related consolidated statements of operations, comprehensive loss, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2022, and the related notes and financial statement schedule II (collectively, the

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consolidated financial statements), and our report dated February 28, 2023 expressed an unqualified opinion on those consolidated financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ KPMG LLP

Irvine, California

February 28, 2023

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share data)

​ ​ ​ ​ ​ ​ ​

​ ​ December 31, ​ December 31,

Assets ​ ​ ​ ​ ​ ​

Current assets: ​ ​

Prepaid expenses and other current assets ​ 37,584 ​ 60,601

Operating lease right-of-use assets ​ ​ 42,537 ​ ​ 52,586

Long-term portion of restricted cash ​ 7,008 ​ —

Notes receivable and other long-term assets, net ​ 56,189 ​ 30,467

Liabilities and Stockholders' Equity ​ ​

Current liabilities: ​ ​

Current portion of debt ​ $ 12,845 ​ $ 93

Current portion of finance lease obligations ​ ​ 846 ​ ​ 948

Current portion of operating lease obligations ​ ​ 3,551 ​ ​ 4,206

Derivative liabilities, related party ​ ​ 1,900 ​ ​ 2,415

Long-term portion of finance lease obligations ​ ​ 2,427 ​ ​ 2,134

Long-term portion of operating lease obligations ​ ​ 39,431 ​ ​ 48,911

Long-term portion of derivative liabilities, related party ​ ​ 2,483 ​ ​ 1,430

Other long-term liabilities ​ 8,199 ​ 8,794

Commitments and contingencies (Note 15) ​ ​

Stockholders’ equity: ​ ​

Accumulated other comprehensive loss ​ (1,622) ​ (3,722)

Total Clean Energy Fuels Corp. stockholders’ equity ​ 747,076 ​ 719,993

Noncontrolling interest in subsidiary ​ 8,335 ​ 7,478

Total liabilities and stockholders’ equity ​ $ 957,070 ​ $ 1,082,357

See accompanying notes to consolidated financial statements.

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except share and per share data)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ Year Ended December 31,

Revenue: ​ ​ ​

Operating expenses: ​ ​ ​

Change in fair value of derivative warrants ​ (40) ​ — ​ —

Loss from equity method investments ​ (161) ​ (430) ​ (4,824)

Gain from sale of certain assets of subsidiary ​ 1,063 ​ 3,885 ​ —

Gain from formation of equity method investment ​ 700 ​ — ​ —

Income tax (expense) benefit ​ (309) ​ (119) ​ (220)

Loss attributable to noncontrolling interest ​ 1,665 ​ 1,009 ​ 857

Net loss attributable to Clean Energy Fuels Corp. per share: ​ ​ ​ ​

Weighted-average common shares outstanding: ​ ​ ​ ​

See accompanying notes to consolidated financial statements.

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(In thousands)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Other comprehensive income (loss), net of tax: ​ ​ ​ ​ ​ ​ ​ ​ ​

See accompanying notes to consolidated financial statements.

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands, except share data)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated ​ ​ ​ ​ ​ ​

​ ​ Common stock ​ Additional ​ ​ ​ ​ Other ​ Noncontrolling ​ Total

​ ​ ​ ​ Paid-In Accumulated Comprehensive Interest in Stockholders’

​ Shares Amount ​ Capital ​ Deficit ​ Income (Loss) ​ Subsidiary ​ Equity

Issuance of common stock 1,512,535 ​ ​ — ​ ​ 1,683 ​ ​ — ​ ​ — ​ ​ — ​ 1,683

Stock-based compensation — ​ ​ — ​ ​ 2,957 ​ ​ — ​ ​ — ​ ​ — ​ 2,957

Other comprehensive income — ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,357 ​ ​ — ​ 1,357

Stock-based compensation — ​ ​ — ​ ​ 14,994 ​ ​ — ​ ​ — ​ ​ — ​ 14,994

Other comprehensive loss — ​ ​ — ​ ​ — ​ ​ — ​ ​ (1,413) ​ ​ — ​ (1,413)

Issuance of common stock ​ 942,760 ​ ​ 0 ​ ​ 1,365 ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,365

Stock-based compensation ​ — ​ ​ — ​ ​ 26,473 ​ ​ — ​ ​ — ​ ​ — ​ ​ 26,473

Net loss ​ — ​ ​ — ​ ​ — ​ ​ (58,733) ​ ​ — ​ ​ (857) ​ ​ (59,590)

Other comprehensive loss ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (2,100) ​ ​ — ​ ​ (2,100)

See accompanying notes to consolidated financial statements.

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ Year Ended December 31,

Cash flows from operating activities: ​ ​ ​ ​ ​ ​ ​ ​ ​

Provision for credit losses and inventory ​ 2,662 ​ 1,257 ​ 2,035

Stock-based sales incentive charges ​ ​ — ​ ​ 83,641 ​ ​ 24,302

Change in fair value of derivative instruments ​ (2,175) ​ 3,490 ​ (517)

Amortization of discount and debt issuance cost ​ (46) ​ 20 ​ (1,712)

Loss (gain) on disposal of property and equipment ​ (2,875) ​ 1,365 ​ 12

Loss on extinguishment of debt ​ 1,249 ​ 39 ​ 3,413

Gain from sale of certain assets of subsidiary ​ (1,063) ​ (3,885) ​ —

Gain from formation of equity method investment ​ (700) ​ — ​ —

Loss from equity method investments ​ 161 ​ 430 ​ 4,824

Deferred income taxes ​ ​ 120 ​ ​ 69 ​ ​ 173

Expense reimbursement from JV ​ ​ — ​ ​ 1,640 ​ ​ —

Changes in operating assets and liabilities: ​ ​ ​ ​ ​ ​

Operating lease liabilities ​ ​ (3,141) ​ ​ (3,053) ​ ​ (3,314)

Cash flows from investing activities: ​ ​ ​ ​

Disbursements for loans receivable ​ (535) ​ (3,905) ​ (2,310)

Payments on and proceeds from sales of loans receivable ​ 1,567 ​ 421 ​ 1,116

Proceeds from disposal of property and equipment ​ 4,673 ​ 2,941 ​ 360

Cash flows from financing activities: ​ ​ ​ ​

Fees paid for issuance of common stock ​ — ​ (6,534) ​ —

Fees paid for debt issuance costs ​ ​ (131) ​ ​ (1,277) ​ ​ (486)

Proceeds for Adopt-A-Port program ​ ​ — ​ ​ 5,815 ​ ​ 1,410

Repayment of proceeds for Adopt-A-Port program ​ ​ — ​ ​ (360) ​ ​ (1,163)

Proceeds from revolving line of credit ​ ​ — ​ ​ 1,450 ​ ​ 1,700

Repayments of borrowing under revolving line of credit ​ — ​ (1,450) ​ (1,700)

Payments of debt extinguishment costs ​ ​ (1,023) ​ ​ (14) ​ ​ (3,239)

Supplemental disclosure of cash flow information: ​ ​ ​

Income taxes paid ​ $ 8 ​ $ 15 ​ $ 68

See accompanying notes to consolidated financial statements.

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1 —Summary of Significant Accounting Policies

The Company and Nature of Business

Clean Energy Fuels Corp., together with its majority and wholly owned subsidiaries (hereinafter collectively referred to as the “Company,” unless the context or the use of the term indicates or requires otherwise) is engaged in the business of selling renewable and conventional natural gas as alternative fuels for vehicle fleets and related fueling solutions to its customers, primarily in the United States and Canada. The Company’s principal business is supplying renewable natural gas (“RNG”) and conventional natural gas, in the form of compressed natural gas (“CNG”) and liquefied natural gas (“LNG”), for medium and heavy-duty vehicles and providing operation and maintenance (“O&M”) services for public and private vehicle fleet customer stations. The Company is also focused on developing, owning, and operating dairy and other livestock waste RNG projects and supplying RNG (currently procured solely from third party sources and will be supplemented by internally produced RNG when the Company’s RNG projects come online) to its customers in the heavy and medium-duty commercial transportation sector.

As a comprehensive clean energy solutions provider, the Company also designs and builds, as well as operates and maintains, public and private vehicle fueling stations in the United States and Canada; sells and services compressors and other equipment used in RNG production and at fueling stations; transports and sells RNG and conventional natural gas, in the form of CNG and LNG, via “virtual” natural gas pipelines and interconnects; sells U.S. federal, state and local government credits it generates by selling RNG in the form of CNG and LNG as a vehicle fuel, including Renewable Identification Numbers (“RIN Credits” or “RINs”) under the federal Renewable Fuel Standard Phase 2 and credits under the California and the Oregon Low Carbon Fuel Standards (collectively, “LCFS Credits”); and obtains federal, state and local tax credits, grants and incentives.

Basis of Presentation

The accompanying consolidated financial statements include the accounts of the Company and its subsidiaries, and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary to state fairly the Company’s consolidated financial position, results of operations, comprehensive income (loss), stockholders’ equity, and cash flows in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). All intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and these notes. Actual results could differ from those estimates and may result in material effects on the Company’s operating results and financial position. Significant estimates made in preparing the accompanying consolidated financial statements include (but are not limited to) those related to revenue recognition, fair value measurements, goodwill and long-lived asset valuations and impairment assessments, income tax valuations, stock-based compensation expense and stock-based sales incentive charges.

Inventory

Inventory consists of raw materials and spare parts, work in process and finished goods and is stated at the lower of cost (first-in, first-out) or net realizable value. The Company evaluates inventory balances for excess quantities and obsolescence by analyzing estimated demand, inventory on hand, sales levels and other information and reduces inventory balances to net realizable value for excess and obsolete inventory based on this analysis.

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Inventories consisted of the following as of December 31, 2021 and 2022 (in thousands):

​ ​ ​ ​ ​ ​ ​

Raw materials and spare parts ​ $ 31,302 ​ $ 37,144

Derivative Instruments and Hedging Activities

In connection with the Company’s Zero Now truck financing program, the Company entered into commodity swap contracts in October 2018 intended to manage risks related to the diesel-to-natural gas price spread in connection with the natural gas fuel supply commitments the Company makes in its fueling agreements with fleet operators that participate in the Zero Now program. The Company has not designated any derivative instruments as hedges for accounting purposes and does not enter into such instruments for speculative trading purposes. These derivative instruments are recorded in the accompanying consolidated balance sheets and are measured as either an asset or liability at fair value with changes in fair value recognized in earnings. See Note 7 for more information.

Property and Equipment

Property and equipment are recorded at cost. Depreciation and amortization are recognized over the estimated useful lives of the assets using the straight-line method. The estimated useful lives of depreciable assets are three to twenty years for LNG liquefaction plant assets, up to ten years for station equipment and LNG trailers, and three to seven years for all other depreciable assets. Leasehold improvements are amortized over the shorter of their estimated useful lives or related lease terms. Periodically, the Company receives cash grant funding to assist in the financing of fueling station construction. The Company initially records the grant proceeds as a reduction of the cost of the respective asset and subsequently amortizes the grant proceeds over the estimated useful life of the asset, resulting in lower total depreciation expense recognized over the estimated useful life of the asset.

Included in “Land, property and equipment, net” in the accompanying consolidated balance sheets were grant proceeds of $27.8 million and $24.9 million as of December 31, 2021 and 2022, respectively. Accumulated amortization of the grant proceeds was $18.0 million and $16.5 million as of December 31, 2021 and 2022, respectively. The Company recorded amortization expense relating to grant proceeds of $1.7 million, $1.7 million and $1.4 million for the years ended December 31, 2020, 2021 and 2022, respectively. No grant proceeds were received for the years ended December 31, 2022 and 2020. Total grant proceeds received were approximately $0.5 million for the year ended December 31, 2021.

Leases

On January 1, 2019, the Company adopted Accounting Standards Codification (“ASC”) 842, Leases, whereby leases are classified as either operating leases or finance leases.

At the inception of a contract the Company assesses whether the contract is, or contains, a lease. The Company’s assessment is based on: (1) whether the contract involves the use of a distinct identified asset, (2) whether the Company obtains the right to substantially all the economic benefit from the use of the asset throughout the period, and (3) whether the Company has the right to direct the use of the asset. The commencement date of the contract is the date the lessor makes the underlying asset available for use by the lessee.

Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset during the lease term and lease liabilities represent obligations to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the commencement date based on the net present value of fixed lease payments over the lease term. ROU assets also include any initial direct costs and advance lease payments made and exclude lease incentives. Lease liabilities also include terminal purchase options when deemed reasonably certain to exercise. The Company’s lease term includes options to extend when it is reasonably certain that it will exercise that option. The Company has elected not to recognize

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

ROU assets and lease liabilities for short-term leases that have a term of 12 months or less; the Company recognizes lease expense for these leases on a straight-line basis over the lease term.

As most of the Company’s operating leases do not have an implicit rate that can be readily determined, the Company uses its secured incremental borrowing rate for the same term as the underlying lease based on information available at lease commencement. For finance leases, the Company uses the rate implicit in the lease.

The lease classification affects the expense recognition on the consolidated statements of operations. Operating lease charges are recorded in “Cost of sales, exclusive of depreciation and amortization,” and “Selling, general and administrative” expense. Finance lease charges are split, whereby depreciation on assets under finance leases is recorded in “Depreciation and amortization” expense and an implied interest component is recorded in “Interest expense.” The expense recognition for operating leases and finance leases is substantially consistent with legacy accounting.

Long-Lived Assets

The Company reviews the carrying value of its long-lived assets, including property and equipment and intangible assets with finite useful lives, for impairment whenever events or changes in circumstances indicate that the carrying value of an asset or asset group may not be recoverable. Events that could result in an impairment review include, among others, a significant decrease in the operating performance of a long-lived asset or asset group or the decision to close a fueling station. Impairment testing involves a comparison of the sum of the undiscounted future cash flows of the asset or asset group to its carrying amount. If the sum of the undiscounted future cash flows exceeds the carrying amount, then no impairment exists. If the carrying amount exceeds the sum of the undiscounted future cash flows, then a second step is performed to determine the amount of impairment, if any, to be recognized. An impairment loss is recognized to the extent that the carrying amount of the asset or asset group exceeds its fair value. The fair value of the asset or asset group is based on estimated discounted future cash flows of the asset or asset group using a discount rate commensurate with the related risk. The estimate of future cash flows requires management to make assumptions and to apply judgment, including forecasting future sales and expenses and estimating useful lives of the assets. These estimates can be affected by a number of factors, including, among others, future results, demand, and economic conditions, many of which can be difficult to predict.

There were no impairments of the Company’s long-lived assets in the years ended December 31, 2020, 2021 and 2022.

Intangible assets with finite useful lives are amortized over their respective estimated useful lives using the straight-line method. The estimated useful lives of intangible assets with finite useful lives are one to eight years for customer relationships, one to fifty years for acquired contracts, two to ten years for trademarks and trade names, and three years for non-compete agreements.

The Company’s intangible assets as of December 31, 2021 and 2022 were as follows (in thousands):

​ ​ ​ ​ ​ ​ ​

Customer relationships ​ $ 5,376 ​ $ 5,376

Trademark and trade names ​ 2,700 ​ 2,700

Non-compete agreements ​ 860 ​ 860

Less accumulated amortization ​ (13,320) ​ (13,320)

Net intangible assets ​ $ 5,500 ​ $ 5,915

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Amortization expense for intangible assets was $0.8 million and $0.5 million for the years ended December 31, 2020 and 2021, respectively. No amortization expense for intangible assets was recognized for the year ended December 31, 2022.

In connection with the Company’s investment in anaerobic digester gas (“ADG”) RNG production projects, the Company acquired contractual rights relating to manure feedstock totaling $5.5 million and $0.4 million in 2021 and 2022, respectively. The amounts paid for contractual rights to manure feedstock are classified and included under “Acquired contracts” in the table above.The acquired contractual rights to manure feedstock have a contractual term ranging from 20 to 50 years and will be amortized over the contractual term using the straight-line method of amortization, commencing on the date of commercial operation of the ADG RNG facility.

Estimated amortization expense subsequent to the year ended December 31, 2022 is expected to be approximately $0.0 million in 2023, $0.1 million in 2024, $0.3 million in 2025, $0.3 million in 2026, $0.3 million in 2027, and $4.9 million thereafter.

Goodwill

Goodwill represents the excess of costs incurred over the fair value of the net assets of acquired businesses. The Company assesses its goodwill using either a qualitative or quantitative approach to determine whether it is more likely than not that the fair value of its reporting unit is less than its carrying value. The Company is required to use judgment when applying the goodwill impairment test, including, among other considerations, the identification of reporting unit(s), the assessment of qualitative factors, and the estimation of fair value of a reporting unit in the quantitative approach. The Company determined that it is a single reporting unit for the purpose of goodwill impairment tests. The Company performs the impairment test annually on October 1, or more frequently if facts and circumstances warrant a review.

The qualitative goodwill assessment includes the evaluation of potential impact on a reporting unit’s fair value of certain events and circumstances, including its enterprise value, macroeconomic conditions, industry and market considerations, cost factors, and other relevant entity-specific events. If it is determined, based upon the qualitative assessment, that it is more likely than not that the reporting unit’s fair value is less than its carrying amount, then a quantitative impairment test is performed.

The quantitative assessment estimates the reporting unit’s fair value based on its enterprise value plus an assumed control premium as evidence of fair value. The estimates used to determine the fair value of the reporting unit may change based on results of operations, macroeconomic conditions, stock price fluctuations, or other factors. Changes in these estimates could materially affect our assessment of the fair value and goodwill impairment for the reporting unit.

During the years ended December 31, 2020, 2021 and 2022, the Company utilized the quantitative approach and concluded that there were no impairment to goodwill.

The following table summarizes the activity related to the carrying amount of goodwill (in thousands):

​ ​ ​ ​

Revenue Recognition

The Company recognizes revenue when control of the promised goods or services is transferred to its customers, in an amount that reflects the consideration to which it expects to be entitled in exchange for the goods or services. To achieve that core principle, a five-step approach is applied: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance

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obligations in the contract, and (5) recognize revenue allocated to each performance obligation when the Company satisfies the performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account for revenue recognition.

The Company is generally the principal in its customer contracts because it has control over the goods and services prior to them being transferred to the customer, and as such, revenue is recognized on a gross basis. Sales and usage-based taxes are excluded from revenues. Revenue is recognized net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental authorities.

Product Revenue

Volume-Related

The Company’s volume-related product revenue consists of sales of RNG and conventional natural gas, in the form of CNG and LNG, AFTC incentives, and sales of RINs and LCFS Credits in addition to Amazon Warrant Charges (defined in Note 13) and changes in fair value of the Company’s derivative instruments associated with providing fuel to customers under contracts.

RNG and conventional natural gas are sold pursuant to contractual commitments over defined delivery periods. These contracts typically include a stand-ready obligation to supply natural gas. The Company applies the ‘right to invoice’ practical expedient and recognizes fuel revenue in the amount to which the Company has the right to invoice. The Company has a right to consideration based on the amount of gasoline gallon equivalents (“GGEs”) of fuel dispensed by the customer and current pricing conditions. The Company calculates one GGE to equal 125,000 British Thermal Units (“BTUs”), and, as such, one million BTUs (“MMBTU”) equal eight GGEs. Customers are typically billed on a monthly basis. Since payment terms are less than a year, the Company has elected the practical expedient which allows it to not assess whether a customer contract has a significant financing component.

Contract modifications are not distinct from the existing contract and are typically renewals of fuel sales. As a result, these modifications are accounted for as if they were part of the existing contract. The effect of a contract modification on the transaction price is recognized prospectively.

The Company sells RINs and LCFS Credits to third parties that need the credits to comply with federal and state requirements. Revenue is recognized on these credits when there is an agreement in place to monetize the credits at a determinable price and the RNG fuel has been sold. The sales price for some environmental credit transactions may not be determinable in the period in which the RNG was sold as pricing is established in the quarter after the RNG was sold. In these circumstances, revenue from RIN and LCFS credits is recognized once the sales price has been established and therefore is considered determinable.

Amazon Warrant Charges are determined based on the grant date fair value of the award, and the associated non-cash stock-based sales incentive charges, which are recorded as a reduction of revenue, are recognized as the customer purchases fuel and vesting conditions become probable of being achieved. See discussion under “Amazon Warrant” below and Note 13 for additional information.

The changes in fair value of derivative instruments relate to the Company’s commodity swap and customer fueling contracts under the Zero Now truck financing program. The contracts are measured at fair value with changes in fair value recorded in the accompanying consolidated statements of operations in the period incurred. The amounts are classified as revenue because the Company’s commodity swap contracts are used to economically offset the risk associated with the diesel-to-natural gas price spread resulting from existing and anticipated customer fueling contracts under the Company’s Zero Now truck financing program. See Note 7 for more information about these derivative instruments. For the years ended December 31, 2020, 2021 and 2022, changes in the fair value of commodity swaps and customer contracts amounted to a gain (loss) of $2.1 million, $(3.5) million, and $0.5 million, respectively.

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AFTC is generated when RNG or conventional natural gas is sold for use as fuel to operate a motor vehicle. See discussion under “Alternative Fuel Excise Tax Credit” below for more information about AFTC, which is not recognized as revenue until the period the credit is authorized through federal legislation.

Station Construction Sales

Station construction contracts are generally short-term, except for certain larger and more complex stations, which can take up to 24 months to complete. For most of the Company’s station construction contracts, the customer contracts with the Company to provide a significant service of integrating a complex set of tasks and components into a single station. Hence, the entire contract is accounted for as one performance obligation.

The Company recognizes revenue over time as the Company performs under its station construction contracts because of the continual transfer of control of the goods to the customer, who typically controls the work in process. Revenue is recognized based on the extent of progress towards completion of the performance obligation and is recorded proportionally as costs are incurred. Costs to fulfill the Company’s obligations under these contracts typically include labor, materials and subcontractors’ costs, other direct costs and an allocation of indirect costs.

Refinements of estimates to account for changing conditions and new developments are continuous and characteristic of the process. Many factors that can affect contract profitability may change during the performance period of the contract, including differing site conditions, the availability of skilled contract labor, the performance of major suppliers and subcontractors, and unexpected changes in material costs. Because a significant change in one or more of these estimates could affect the profitability of these contracts, the contract price and cost estimates are reviewed periodically as work progresses and adjustments proportionate to the cost-to-cost measure of progress are reflected in contract revenues in the reporting period when such estimates are revised. Provisions for estimated losses on uncompleted contracts are recorded in the period in which the losses become known.

Contract modifications are typically expansions in scope of an existing station construction project. As a result, these modifications are accounted for as if they were part of the existing contract. The effect of a contract modification on the transaction price and the Company’s measure of progress for the performance obligation to which it relates is recognized as an adjustment to revenue (either as an increase or a reduction) on a cumulative catch-up basis.

Under the typical payment terms of the Company’s station construction contracts, the customer makes either performance-based payments (“PBPs”) or progress payments. PBPs are interim payments of the contract price based on quantifiable measures of performance or the achievement of specified events or milestones. Progress payments are interim payments of costs incurred as the work progresses. For some of these contracts, the Company may be entitled to receive an advance payment. The advance payment typically is not considered a significant financing component because it is used to meet working capital demands that can be higher in the early stages of a construction contract and to protect the Company if the customer fails to adequately complete some or all of its obligations under the contract. In addition, the customer retains a small portion of the contract price until completion of the contract. Such retained portion of the contract price is not considered a significant financing component because the intent is to protect the customer.

In certain contracts with its customers, the Company agrees to provide multiple goods or services, including construction of and sale of a station, O&M services, and sale of fuel to the customer. These contracts have multiple performance obligations because the promise to transfer each separate good or service is separately identifiable and distinct. This evaluation requires significant judgment and the decision to combine a group of contracts or separate the combined or single contract into multiple performance obligations could change the amount of revenue recognized in one or more periods.

The Company allocates the contract price to each performance obligation using best estimates of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate the standalone selling price for fuel and O&M services is observable standalone sales, and the primary method used to estimate the standalone selling

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price for station construction sales is the expected cost plus a margin approach because the Company sells customized customer-specific solutions. Under this approach, the Company forecasts expected costs of satisfying a performance obligation and then adds an appropriate margin for the good or service.

Service Revenue

O&M and Other Services

O&M and other services are sold pursuant to contractual commitments over defined performance periods. These contracts typically include a stand-ready obligation to provide O&M and/or other services based on a committed and agreed upon routine maintenance schedule or when and if called upon by the customer.

The Company applies the ‘right to invoice’ practical expedient and recognizes O&M and other services revenue in the amount to which the Company has the right to invoice. The Company has a right to consideration based on services rendered or on amount of GGEs of fuel dispensed by the customer multiplied by an agreed-upon rate. Customers are typically billed on a monthly basis. Since payment terms are less than a year, the Company has elected the practical expedient which allows it to not assess whether a customer contract has a significant financing component.

Contract modifications are not distinct from the existing contract and are typically renewals of O&M and other service sales. As a result, these modifications are accounted for as if they were part of the existing contract. The effect of a contract modification on the transaction price is recognized prospectively.

Other

The majority of other revenue is from sales of used natural gas heavy-duty trucks purchased by the Company. Revenue on these contracts is recognized at the point in time when the customer accepts delivery of the truck.

Alternative Fuel Excise Tax Credit

Under separate pieces of U.S. federal legislation, the Company was eligible to receive a federal alternative fuel excise tax credit (“AFTC”) for its natural gas vehicle fuel sales made between October 1, 2006 and December 31, 2021. The AFTC credit was equal to $0.50 per GGE of CNG that the Company sold as vehicle fuel, and $0.50 per diesel gallon of LNG that the Company sold as vehicle fuel in 2020 and 2021. The Inflation Reduction Act of 2022, enacted on August 16, 2022, extended AFTC for an additional three years, beginning retroactively to January 1, 2022. AFTC incentive under the extension remains at $0.50 per GGE of CNG and $0.50 per diesel gallon of LNG that the Company sells as vehicle fuel through December 31, 2024.

Based on the service relationship with its customers, either the Company or its customer claims the credit. The Company records its AFTC credits, if any, as revenue in its consolidated statements of operations because the credits are fully payable to the Company and do not offset income tax liabilities. As such, the credits are not deemed income tax credits under the accounting guidance applicable to income taxes.

LNG Transportation Costs

The Company records the costs incurred to transport LNG to its customers in “Product cost of sales” in the accompanying consolidated statements of operations.

Advertising Costs

Advertising costs are expensed as incurred. Advertising costs were immaterial for the years ended December 31, 2020, 2021 and 2022.

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Stock-Based Compensation

The Company recognizes compensation expense for all stock‐based payment arrangements over the requisite service period of the award and recognizes forfeitures as they occur. For service and performance-based stock options, the Company determines the grant date fair value using the Black‐Scholes option pricing model, which requires the input of certain assumptions, including the expected life of the stock‐based payment award, stock price volatility and risk‐free interest rate. For market-based stock options, the Company determines the grant date fair value using the Monte Carlo simulation model, which requires the input of certain assumptions, including the derived service period and the volatility of the Company’s stock price. For restricted stock units, the Company determines the grant date fair value based on the closing market price of its common stock on the date of grant.

Amazon Warrant

The Amazon Warrant (as defined in Note 13) is accounted for as an equity instrument and measured in accordance with Accounting Standards Codification (“ASC”) 718, Compensation – Stock Compensation. To determine the fair value of the Amazon Warrant, the Company used the Black-Scholes option pricing model, which is based in part on assumptions that require management to use judgment. For awards granted to a customer, which are not in exchange for distinct goods or services, the fair value of the awards earned based on service or performance conditions is recorded as a reduction of the transaction price in accordance with ASC 606, Revenue from Contracts with Customers. Based on the fair value of the award, the Company determines the amount of non-cash stock-based sales incentive charges on the customer’s pro-rata achievement of vesting conditions, which is recorded as a reduction of revenue in the consolidated statements of operations.

Income Taxes

Income taxes are computed using the asset and liability method. Under this method, deferred income taxes are recognized by applying enacted statutory tax rates applicable to future years to differences between the tax bases and financial carrying amounts of existing assets and liabilities. The impact on deferred taxes of changes in tax rates and laws, if any, are applied to the years during which temporary differences are expected to be settled and are reflected in the consolidated financial statements in the period of enactment. Valuation allowances are established when management determines it is more likely than not that deferred tax assets will not be realized. When evaluating the need for a valuation analysis, we use estimates involving a high degree of judgment including projected future US GAAP income and the amounts and estimated timing of the reversal of any deferred tax assets and liabilities.

The Company has a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not sustainable upon examination by taxing authorities based on the technical merits of the position. The amount recognized is measured as the largest amount of benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement. The Company recognizes potential accrued interest and penalties related to unrecognized tax benefit in income tax expense.

The Company operates within multiple domestic and foreign taxing jurisdictions and is subject to audit in these jurisdictions. These audits can involve complex issues, which may require an extended period of time to resolve. Although the Company believes that adequate consideration has been given to these issues, it is possible that the ultimate resolution of these issues could be significantly different from originally estimated.

Net Loss Per Share

Basic net loss per share is computed by dividing the net loss attributable to Clean Energy Fuels Corp. by the weighted-average number of common shares outstanding and common shares issuable for little or no cash consideration during the period. Diluted net loss per share is computed by dividing the net loss attributable to Clean Energy Fuels Corp. by the

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weighted-average number of common shares outstanding and common shares issuable for little or no cash consideration during the period and potentially dilutive securities outstanding during the period, and therefore reflects the dilution from common shares that may be issued upon exercise or conversion of these potentially dilutive securities, such as stock options, warrants, convertible notes and restricted stock units. The dilutive effect of stock awards and warrants is computed under the treasury stock method. The dilutive effect of convertible notes and restricted stock units is computed under the if-converted method. Potentially dilutive securities are excluded from the computations of diluted net loss per share if their effect would be antidilutive.

Foreign Currency Translation and Transactions

The Company uses the local currency as the functional currency of its foreign subsidiary and equity method investment. Accordingly, all assets and liabilities outside the United States are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Revenue and expense items are translated at the weighted-average exchange rates prevailing during the period. Foreign currency translation adjustments are recorded in Accumulated other comprehensive loss” in stockholders’ equity.

Foreign currency transactions occur when there is a transaction denominated in other than the respective entity’s functional currency. The Company records the changes in the exchange rate for these transactions in its consolidated statements of operations. For each of the years ended December 31, 2020, 2021 and 2022, foreign exchange transaction gains and (losses) were immaterial and were included in “Other income (expense), net” in the accompanying consolidated statements of operations.

Comprehensive Loss

Comprehensive loss is defined as the change in equity (net assets) of a business enterprise during the period from transactions and other events and circumstances from non-owner sources. The difference between net loss and comprehensive loss for the years ended December 31, 2020, 2021 and 2022 was comprised of the Company’s foreign currency translation adjustments and unrealized gains and losses on available-for-sale securities.

Concentration of Credit Risk

Credit is extended to all customers based on financial condition, and collateral is generally not required. Concentrations of credit risk with respect to trade receivables are limited because of the large number of customers comprising the Company’s customer base and dispersion across many different industries and geographies. Certain international customers, however, have historically been slower to pay on trade receivables. Accordingly, the Company continually monitors collections and payments from its customers and maintains a provision for estimated credit losses based upon its historical experience and any specific customer collection issues that it has identified. Although credit losses have historically been within the Company’s expectations and the provisions established, the Company cannot guarantee that it will continue to experience the same credit loss rates that it has in the past.

Source: SEC EDGAR (public domain) · 10-K for the period ended 2022-12-31, filed 2023-02-28 · accession 0001558370-23-002365

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