Quarterlytics / Energy / Oil & Gas Refining & Marketing / Clean Energy Fuels Corp. / FY2021 Annual Report

Clean Energy Fuels Corp.
Annual Report 2021

CLNE · NASDAQ Energy
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FY2021 Annual Report · Clean Energy Fuels Corp.
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION 

Washington, D.C. 20549 
FORM 10-K 

(Mark One) 
☒

ANNUAL  REPORT  PURSUANT  TO  SECTION 13  OR  15(d) OF  THE  SECURITIES  EXCHANGE  ACT
OF 1934

☐

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
OF 1934

For the fiscal year ended: December 31, 2021 
or 

For the transition period from   

   to 

Commission File Number: 001-33480 

CLEAN ENERGY FUELS CORP. 

(Exact name of registrant as specified in its charter) 

Delaware 
(State or other jurisdiction of incorporation or organization) 

33-0968580 
(IRS Employer Identification No.) 

4675 MacArthur Court, Suite 800, Newport Beach, CA 92660  
(Address of principal executive offices, including zip code)

(949) 437-1000
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act: 

Title of each class 

Trading Symbol(s) 

Name of each exchange on which registered 

Common stock, $0.0001 par value per share 

CLNE 

The Nasdaq Stock Market LLC 
(Nasdaq Global Select Market) 

Securities registered pursuant to section 12(g) of the Act: None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  ☒     No  ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes  ☐     No  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the 
preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 
90 days. Yes  ☒     No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-

T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes  ☒     No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging 
growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the 
Exchange Act. 

Large accelerated filer  ☒ 

   Accelerated filer  ☐ 

   Non-accelerated filer  ☐ 

   Smaller reporting company  ☐     Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised 

financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over 
financial reporting under Section 404(b) of the Sarbanes Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  ☐     No  ☒

The aggregate market value of the voting stock held by non-affiliates of the registrant as of June 30, 2021, the last business day of the registrant’s most recently 
completed second fiscal quarter, was approximately $1,793,811,286. The treatment of persons as affiliates of the registrant for purposes of this calculation is not, and 
shall not be considered, a determination as to whether any such person is an affiliate of the registrant for any other purpose. 

As of February 18, 2022, there were 222,503,640 shares of the registrant’s common stock, par value $0.0001 per share, issued and outstanding. 

Portions of the registrant’s definitive proxy statement for its 2022 annual meeting of stockholders are incorporated by reference in Part III of this report. 

DOCUMENTS INCORPORATED BY REFERENCE 

 
 
 
 
 
 
 
 
 
 
 
 
Clean Energy Fuels Corp. 

Annual Report on Form 10-K 

For the Fiscal Year Ended December 31, 2021 

TABLE OF CONTENTS 

Cautionary Note Regarding Forward-Looking Statements 

Business 
Risk Factors 

Part I 
Item 1. 
Item 1A. 
Item 1B.  Unresolved Staff Comments 
Item 2. 
Item 3. 
Item 4. 

Properties 
Legal Proceedings 
Mine Safety Disclosures 

Part II 
Item 5. 

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of 
Equity Securities 
[Reserved]  
Management’s Discussion and Analysis of Financial Condition and Results of Operations 

Item 6. 
Item 7. 
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk 
Financial Statements and Supplementary Data 
Item 8. 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 
Item 9. 
Item 9A. 
Controls and Procedures 
Item 9B.  Other Information 
Item 9C.  Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 

Part III 
Item 10. 
Item 11. 
Item 12. 

Item 13. 
Item 14. 

Part IV 
Item 15. 
Item 16. 

Directors, Executive Officers and Corporate Governance 
Executive Compensation 
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 
Matters 
Certain Relationships and Related Transactions, and Director Independence 
Principal Accountant Fees and Services 

Exhibits and Financial Statement Schedules 
Form 10-K Summary 

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS 

This annual report on Form 10-K contains “forward-looking statements” within the meaning of Section 27A of the 
Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as 
amended (the “Exchange Act”). Forward-looking statements are statements other than historical facts. These statements 
relate  to  future  events  or  circumstances  or  our  future  performance,  and  they  are  based  on  our  current  assumptions, 
expectations and beliefs concerning future developments and their potential effect on our business. In some cases, you can 
identify  forward-looking  statements  by  the  following  words:  “if,”  “may,”  “might,”  “shall,”  “will,”  “can,”  “could,” 
“would,”  “should,”  “expect,”  “intend,”  “plan,”  “goal,”  “objective,”  “initiative,”  “anticipate,”  “believe,”  “estimate,” 
“predict,”  “project,”  “forecast,”  “potential,” “continue,”  “ongoing”  or  the  negative  of  these  terms or  other  comparable 
terminology. The absence of these words, however, does not mean that a statement is not forward-looking. The forward-
looking statements we make in this report include statements about, among other things, our future financial and operating 
performance, our growth strategies, including expectations regarding our delivery and sales of renewable natural gas and 
sale of U.S. federal, state and local government credits, and anticipated trends in our industry and our business. 

The  preceding  list  is  not  intended  to  be  an  exhaustive  list  of  all  of  the  topics  addressed  by  our  forward-looking 
statements.  Although  the  forward-looking  statements  we  make  reflect  our  good  faith  judgment  based  on  available 
information,  they  are  only  predictions  of  future  events  and  conditions.  Accordingly,  our  forward-looking  statements 
involve known and unknown risks, uncertainties and other factors that may cause our or our industry’s actual results, levels 
of activity, performance or achievements to be materially different from any future results, levels of activity, performance 
or achievements expressed or implied by our forward-looking statements. Factors that might cause or contribute to such 
differences include, among others, those discussed in Item 1A. Risk Factors of this report, as such factors may be amended, 
supplemented or superseded from time to time by other reports we file with the Securities and Exchange Commission (the 
“SEC”). In addition, we operate in a competitive and rapidly evolving industry in which new risks emerge from time to 
time, and it is not possible for us to predict all of the risks we may face. Nor can we assess the impact of all factors on our 
business  or  the  extent  to  which  any  factor  or  combination  of  factors  could  cause  actual  results  to  differ  from  our 
expectations. As a result of these and other potential risks and uncertainties, our forward-looking statements should not be 
relied on or viewed as guarantees of future events or conditions. 

All of our forward-looking statements speak only as of the date they are made and, except as required by law, we 
undertake no obligation to update publicly any forward-looking statements for any reason, including to conform these 
statements  to  actual  results  or  to  changes  in  our  expectations.  You  should,  however,  review  the  factors  and  risks  we 
describe in the reports we will file from time to time with the SEC for the most recent information about our forward-
looking statements and the risks and uncertainties related to these statements. 

We qualify all of our forward-looking statements by this cautionary note. 

* * * * * * *

Unless the context indicates otherwise, all references to “Clean Energy,” the “Company,” “we,” “us,” or “our” in 

this report refer to Clean Energy Fuels Corp., together with its majority and wholly owned subsidiaries. 

We  own  registered  or  unregistered  trademark  or  service  mark  rights  to  Clean  Energy™  and  Clean  Energy 
Renewables™. Although we do not use the “®” or “™” symbol in each instance in which one of our trademarks appears 
in this report, this should not be construed as any indication that we will not assert our rights thereto to the fullest extent 
under applicable law. Any other service marks, trademarks and trade names appearing in this report are the property of 
their respective owners. 

Investors and others should note that we disseminate information to the public about our Company, our products, 
services and other matters through various channels, including our website (www.cleanenergyfuels.com), SEC filings, 
press  releases,  public  conference  calls  and  webcasts,  in  order  to  achieve  broad,  non-exclusionary  distribution  of 
information to the public. We encourage investors and others to review the information we make public through these 
channels, as such information could be deemed to be material information. 

2 

Item 1.   Business. 

Overview 

PART I 

Clean  Energy  Fuels  Corp.,  a  Delaware  corporation,  is  a  leading  renewable  energy  company  focused  on  the 
procurement and distribution of renewable natural gas (“RNG”) and conventional natural gas, in the form of compressed 
natural gas (“CNG”) and liquefied natural gas (“LNG”), for the United States and Canadian transportation markets.  RNG, 
which  is  delivered  as  either  CNG  or  LNG,  is  created  by  the  recovery  and  processing  of  naturally  occurring, 
environmentally detrimental waste methane (“biogas”) from non-fossil fuel sources - such as dairy and other livestock 
waste and landfills - for beneficial use as a replacement for fossil-based transportation fuels. Methane is one of the most 
potent climate-harming greenhouse gases (“GHG”) with a comparative impact on global warming that is about 25 times 
more powerful than that of carbon dioxide. We are focused on developing, owning, and operating dairy and other livestock 
waste RNG projects and supplying RNG (procured from our own projects or from third parties) to our customers in the 
heavy and medium-duty commercial transportation sector. We have participated in the alternative vehicle fuels industry 
for over 20 years. We believe we are in a unique position because the valuable Environmental Credits (as defined below) 
are generated by the party that dispenses RNG into vehicle fuel tanks, and we believe we have access to more dispensers 
than any other market participant. 

We believe we were the first organization to supply RNG for vehicle fuel use in the U.S., and sales of our RNG for 
such purpose have increased from 13.0 million gasoline gallon equivalents (“GGEs”) in 2013 to 167.0 million GGEs in 
2021. We are North America’s leading provider of the cleanest fuel for the commercial transportation market, based on 
both the number of stations we operate and the amount of GGEs delivered of RNG, CNG and LNG, which amounted to a 
total of 402.6 million GGEs in 2021.  With the Company’s focus on RNG, our sales of RNG have grown from 12% of our 
vehicle fuel sales in 2013 to 78% of our vehicle fuel sales in 2021 (excluding GGEs from O&M (as defined below) sales 
and non-vehicle sales). We believe that during 2021 we provided 58% and 47% of the RNG used for transportation fuel 
in California and the United States, respectively.   

As  a  comprehensive  clean  energy  solutions  provider,  we  also  design  and  build,  as  well  as  operate  and  maintain 
(“O&M”), public and private vehicle fleet customer stations in the United States and Canada; 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. We serve fleet vehicle operators in a variety of markets, including heavy-duty trucking, airports, refuse, 
public transit, industrial and institutional energy users, and government fleets. We believe these fleet markets will continue 
to present a growth opportunity for our vehicle fuels for the foreseeable future. 

Commercial transportation, including heavy-duty trucking, generates a significant portion of the emissions of overall 
carbon dioxide and other climate-harming GHGs, and transitioning this sector to low and negative carbon fuels is a critical 
step towards reducing overall global GHG emissions. According to the Global Carbon Project’s Global Carbon Budget 
published in November 2021, 34.8 billion metric tons of carbon dioxide were emitted globally in 2020, of which 7.3 billion 
metric  tons,  or  21%,  came  from  the  transportation  sector.  There  is  a  global  demand  for  reducing  GHG  emissions,  as 
evidenced by 96% of the world’s countries having committed to the Paris Agreement according to The United Nations 
Framework Convention in Climate Change, and 92% of S&P 500 companies focusing on sustainability metrics, including 
GHG emissions, according to the Governance & Accountability Institute’s Flash Report published in 2021. 

Biogas, the primary source of RNG, is produced by microbes as they break down organic matter in the absence of 
oxygen. Our sources of commercial scale biogas are anaerobic digester gas (“ADG”), which is produced inside an airtight 
tank used to breakdown organic matter such as dairy and other livestock waste, and landfill gas (“LFG”), which is produced 
by the decomposition of organic waste at landfills. 

3 

Given the potential growth and positive environmental impact of RNG, our mission is to obtain as much RNG supply 
as possible. To that end we are pursuing development and ownership of dairy and other livestock waste ADG projects on 
our  own  and  with  partners  including  TotalEnergies  S.E.  (“TotalEnergies”)  and  BP  Products  North  America  (“bp”).  
Further, we  enter  long-term RNG  supply offtake  agreements  with  well-known  third parties  that  own  RNG  production 
facilities.  Because our business transforms waste methane into a renewable source of energy, our RNG generates valuable 
Environmental Credits under federal and state initiatives. 

Depending  on  the  source,  the  California  Air  Resources  Board  (“CARB”)  has  determined  that  RNG  can  have  a 
significantly negative carbon intensity score, enabling our customers to achieve a net carbon negative emissions profile.  

FUEL CARBON INTENSITY SCORES

(100p/ML)

200

100

0

(100)

(200)

(300)

(400)

164

56

Diesel

75

81

0

E
V
T
A
G
E
N
N
O
B
R
A
C

(346)

Hydrogen

Electricity

RNG

California Air Resources Board “Current Fuel Pathways” 2018 – 2020 (5th-95th percentile) 

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 3.9 million Class 8 heavy-duty 
trucks operating in the U.S. that use over 40 billion gallons of diesel fuel per year. As of December 31, 2021, we deliver 
RNG to the transportation market through 548 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. Critically, to generate valuable Environmental Credits, the 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, 2021, we serve over 1,000 fleet customers operating over 48,000 vehicles on 
our fuels.  We believe we  are  the only  company  in  the U.S.  that provides  RNG  vehicle  fuel  at  scale  in  California  and 
nationally. 

Longer  term,  we  plan  to  provide  hydrogen  fuel  to  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. 

4 

 
 
Our Principal Products, Services and Other Business Activities 

Our principal products, services and other business activities are described below. Information about the revenue we 
receive from these activities is discussed in this report in Item 7. “Management’s Discussion and Analysis of Results of 
Operations and Financial Condition.” 

RNG, CNG and LNG Sales.     

•  Unlike other renewables, RNG is easily stored, distributed, and replenished.  RNG can be injected into the 
existing natural  gas  distribution network  and  delivered  to vehicle  fuel  stations  and  liquefaction facilities.  
While  other  sources  of  green  and  renewable  energy  require  significant  infrastructure  buildout  to  be 
implemented,  RNG  is  affordable  and  easily  used  in  existing  infrastructure  and  vehicles  today.    Further, 
CARB has determined that RNG holds the lowest carbon intensity of any on-road vehicle fuel, including 
fully renewable electric from solar and wind.   

•  CNG is RNG or conventional natural gas that is compressed and dispensed in gaseous form. CNG is typically 
delivered by obtaining RNG or conventional natural gas from the pipeline and then compressing and storing 
it at a fueling station and dispensing it directly into a vehicle. Our CNG vehicle fuel sales are made primarily 
through contracts with our customers or on a per fill-up basis at prices we set at public access fueling stations 
based on prevailing market conditions.  Through our subsidiary NG Advantage, LLC (“NG Advantage”), we 
also transport and sell CNG for non-vehicle purposes via virtual natural gas pipelines and interconnects to 
industrial and institutional energy users that do not have direct access to pipelines. NG Advantage also has 
the capability to transport RNG from production facilities to pipeline injection sites using its fleet of 98 high-
capacity trailers. 

•  LNG  is  RNG  or  conventional  natural  gas  that  is  cooled  at  a  liquefaction  facility  to  approximately  -260 
degrees Fahrenheit until it condenses into a liquid. We obtain LNG from our own liquefaction plants and 
from third-party suppliers. We own and operate LNG liquefaction plants near Boron, California and Houston, 
Texas, which we refer to as the “Boron Plant” and the “Pickens Plant,” respectively. In 2021, we purchased 
9.2% of our LNG from third-party suppliers, and we produced the remainder of our LNG at our plants.  We 
sell LNG for use as a vehicle fuel on a bulk basis to fleet customers and through our network of public access 
fueling stations. We deliver LNG with our fleet of 74 tanker trailers to fueling stations, where it is stored and 
then dispensed in liquid form into vehicles. The need to liquefy and transport LNG generally causes LNG to 
cost more than CNG. We sell LNG through supply contracts and on a per fill-up basis at prices we set at 
public access fueling stations based on prevailing market conditions. Additionally, we sell LNG for non-
vehicle purposes, including to customers who use LNG in rocket propulsion and oil fields, and for utility, 
industrial, marine and rail applications. 

Sales of Environmental Credits.   We generate Environmental Credits consisting of RINs, as well as LCFS Credits, 
when we sell RNG for use as a vehicle fuel in the United States, California, and Oregon, respectively.  We sell these 
Environmental Credits to third parties who must comply with federal and state emissions requirements. Generally, the 
amount of Environmental Credits we generate increases as we sell higher volumes of RNG as a vehicle fuel. The number 
of Environmental Credits we sell and our revenue from these sales can vary depending on a number of factors, including 
the market for these credits, which has been volatile and subject to significant price fluctuations in recent periods (for 
example, in 2021, market prices for RINs were as high as $3.81 and as low as $1.95), any changes to the federal and state 
programs under which the credits are generated and sold, and our ability to strictly comply with these programs. 

O&M Services.   We perform maintenance service on Clean Energy-owned and customer-owned fueling stations. Our 
maintenance program is backed by nearly 200 company employed service technicians and support personnel, an in-house 
24/7 remote monitoring center, technician training center, computerized maintenance management system and inventory 
warehouses throughout the United States and Canada. For maintenance services, we generally charge a fixed fee or per 
gallon fee based on volume of fuel dispensed at the station. 

5 

Station  Construction and  Engineering.    We  design  and  construct  fueling  stations  and  sell  or  lease  some of  these 
stations  to  our  customers.  Since  2008,  we  have  served  as  the  general  contractor  or  supervised  qualified  third-party 
contractors to build over 440 natural gas fueling stations. 

Grant Programs.    We apply for and help our fleet customers apply for federal, state and local grant programs in 
areas in which we operate. These programs can provide funding for vehicle purchases, fueling station construction and 
vehicle fuel sales. 

Our Company’s Sustainability Program 

Our vision is to deliver renewable transportation fuel for a cleaner, safer, more equitable tomorrow. We have a bold 
program, supported by ambitious goals to drive progress across four key pillars: fueling the transition to renewable energy 
in  transportation,  building  the  workforce  for  the  future  of  renewable  energy,  advancing  smart  policies  that  drive  the 
transformation to zero carbon fuels, and earning stakeholder trust. 

Fueling transportation’s transition to renewable energy.  

The  fuel  we  provide  enables  our  customers  to  transition  from  diesel  to  a  solution  with  significantly  lower  GHG 
emissions and air quality impacts today. We are committed to pushing ourselves and our partners further by helping to 
produce and distribute 100% RNG fuels, which can have a negative net carbon emissions profile. We are also committed 
to doing our part to reduce our own emissions across our operations and supply chain. 

Building the workforce for the future of renewable energy.   

At Clean Energy we have always had a strong focus on employee and contractor safety and strive to be a zero-incident 
workplace for our service technicians and staff, as well as our customers using our facilities. Looking towards the future, 
we will continue to focus on employee recruitment, retention, and engagement, with a specific emphasis on diversity, 
equity,  and  inclusion  in  all  areas  of  our  company.  It  is  important  that  we  build  and  maintain  a  diverse  and  inclusive 
workforce, leadership team and supplier base that are reflective of the communities in which we operate. We acknowledge 
the lack of diversity in the energy sector and strive to be part of the solution.  

Advancing smart policies that drive the transformation to zero carbon fuels.   

Widespread change will be necessary across all industries to achieve our collective climate goals. We recognize that 
some physical climate impacts are unavoidable in the near-term and that the transition to a low carbon economy may bring 
new risks to our business. We also recognize that natural gas extraction and processing causes environmental and social 
impacts that must be appropriately managed. By investing in the energy transition, our aim is to reduce our own risks and 
provide lasting benefits to society. To enable lasting change, we must ensure the adoption of performance-driven state and 
federal policies that accelerate the shift from diesel and other transportation fuels with high GHG emissions and negative 
air quality impacts to zero net carbon emission transportation fuels. We are also committed to contributing to quality of 
life  improvement  and  economic  development  in  the  communities  where  we  conduct  business,  many  of  which  are 
disadvantaged communities that suffer from poor air quality due to the use of transportation fuels, including diesel, that 
have high GHG emissions and significantly negative air quality impacts.  

Earn stakeholder trust.  

To realize our ambitious goals we are building trusted partnerships with our stakeholders. We strive to act ethically 
and responsibly in all aspects of our business, seeking to meet expectations related to human rights, labor standards, air 
quality, water stewardship, operational energy efficiency, biodiversity and land use, disaster preparedness, business ethics, 
and other material topics. 

6 

Market Opportunity 

Increasing demand for RNG 

Demand for RNG produced from biogas is significant and growing in large part due to an increased focus by the U.S. 
public and investors, as well as federal, state, and local regulatory authorities, on reducing the emission of GHG, such as 
methane.  According  to  the  U.S.  Environmental  Protection  Agency  (“EPA”),  methane  is  a  significant  GHG,  which 
accounted for roughly 10% of all U.S. GHG emissions from human activities in 2019 and which has a comparative impact 
on  global  warming  that  is  about  25  times  more  powerful  than  that  of  carbon  dioxide.  Biogas  processing  facilities 
substantially reduce methane emissions at livestock farms and landfills, which together accounted for approximately 53% 
of U.S. methane emissions in 2019 according to the EPA. 

Over the past decade we have seen the transportation sector be the fastest growing end market for RNG, where RNG 
is used as a replacement for fossil-based fuel. This growth has been principally driven by an increased focus on reducing 
GHGs, as well as Environmental Credits to support the production of renewable transportation fuels.  According to NGV 
America, a national organization dedicated to the development of a growing, profitable, and sustainable market for vehicles 
powered by RNG, from 2015 to 2020, “RNG use as a transportation fuel increased 267%, and, in 2020, RNG use as a 
motor fuel displaced 3.5 million tons of carbon dioxide equivalent.”  Further, RNG engines now commercially available 
for heavy-duty, regional-haul, refuse, transit, and vocational applications have been certified to satisfy CARB’s optional 
low  nitrogen  oxide  (“NOx”)  emission  standard  of  0.02  g/bhp-hr.  This  means  that  these  engines  emit  90%  less  smog-
forming NOx than the existing regulatory standards, making them the lowest certified ultra-low NOx emission engines in 
the U.S. 

Given public and investor calls for, and U.S. federal, state, and local regulatory trends and policies aimed at, reducing 
GHG emissions, we expect continued regulatory support for RNG as a replacement for fossil-based fuels and therefore 
continued and growing demand for RNG in the foreseeable future. 

Increasing vehicle availability 

RNG is a replacement for fossil-based fuel consumed by vehicles that use internal combustion engines like those used 
in gasoline- or diesel-powered vehicles. Virtually any car, truck, bus, or other vehicle is capable of being manufactured to 
run on RNG.  Many types and models of heavy- and medium-duty RNG vehicles and engines are available in the U.S., 
including,  among  others,  long-haul  tractors,  refuse  trucks,  regional  tractors,  transit  buses,  ready-mix  trucks,  delivery 
trucks, vocational work trucks, school buses, shuttles, pickup trucks and cargo and passenger vans.  

More  broadly,  many  companies  are  developing  and  commercializing  hydrogen  and  electric  commercial  vehicles, 
particularly  as  the  commercial  transportation  sector  increasingly  shifts  toward  low-emission,  zero-emission, or  carbon 
neutral vehicle solutions.  Cummins, Daimler, Dana, Navistar, PACCAR, Toyota, Volvo, XOS, Tesla and Nikola have 
announced their plans to bring long-haul Class 8 commercial hydrogen- and battery-powered vehicles to the market over 
the coming years. 

Availability of long-term feedstock supply 

Biogas is collected and processed to remove impurities for use as RNG and injected into existing natural gas pipelines. 
RNG is fully interchangeable with and chemically identical to conventional natural gas. Common sources of biogas include 
livestock farms, landfills, and wastewater resource recovery facilities. 

Livestock-  and  landfill-sourced  biogas  represent  a  significant  opportunity  to  produce  RNG  and  reduce  GHG 
emissions. Although LFG has accounted for most of the growth in biogas projects to date, biogas from dairy and other 
livestock farm waste represents significant opportunities for RNG production that remain largely untapped. According to 
ICF Consulting, Inc., the global consulting services company, by 2040, the U.S. has the technical potential to annually 
produce up to 34.4 billion GGEs of RNG, including up to 20.6 billion GGEs of ADG RNG.   

7 

 
All-in prices paid for RNG from livestock farms can be significantly higher than prices for RNG from landfills due to 
higher value available from state-level low-carbon fuel incentives for these projects. Given our market leadership in RNG, 
we believe we are well-positioned to take advantage of this market. 

TotalEnergies Joint Venture 

On March 3, 2021, we entered an agreement (“TotalEnergies JV Agreement”) with TotalEnergies that created a 50/50 
joint venture (“TotalEnergies JV”) to develop ADG RNG production facilities in the United States. The TotalEnergies JV 
Agreement contemplates that the TotalEnergies JV will invest up to $400 million of equity in production projects, and 
TotalEnergies and the Company each committed to initially provide $50 million for the TotalEnergies JV. Pursuant to the 
TotalEnergies JV Agreement, the Company and TotalEnergies have given the TotalEnergies JV a limited right of first 
opportunity to invest in ADG RNG projects they respectively originate. 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 have each committed to contribute 
$7.0 million to the DR JV. On November 1, 2021, we and TotalEnergies have each contributed an initial $4.8 million 
capital contribution to the DR JV. 

bp Joint Venture 

On  April  13,  2021,  pursuant  to  a  memorandum  of  understanding  we  entered  into  with  bp  in  December  2020, we 
entered an agreement (“bp JV Agreement”) with bp that created a 50/50 joint venture (the “bpJV”) to develop, own and 
operate new ADG RNG production facilities in the United States. Pursuant to the bp JV Agreement, bp and the Company 
each  committed  to  provide  $50.0  million  and  $30.0  million,  respectively,  with  an  option  available  to  the  Company, 
exercisable  prior  to  August  31,  2021,  to  commit  an  additional  $20.0  million  to  the  bpJV.  bp’s  initial  $50.0  million 
contribution was made on April 13, 2021 and consisted of all unpaid principal outstanding under the loan agreement dated 
December 18, 2020 (see Note 12), pursuant to which bp advanced $50.0 million to the Company to fund capital costs and 
expenses  incurred  prior  to  formation  of  the  bpJV,  including  capital  costs  and  expenses  for  permitting,  engineering, 
equipment, leases and feed stock rights. On June 21, 2021, we contributed $50.2 million to the bpJV. In December 2021, 
the bpJV authorized 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 are each required to contribute $71.6 million 
to the bpJV. As of December 31, 2021, we and bp have contributed $20.0 million and $71.6 million, respectively, to the 
bpJV in connection with the bpJV Capital Call. The remaining contribution balance of $51.6 million due from us will be 
paid on or prior to June 30, 2022. As of December 31, 2021, we and bp each own 50% of the bpJV. 100% of the RNG 
produced from projects developed and owned by the bpJV will be provided to the vehicle fuels market pursuant to our 
existing marketing agreement with bp. 

Use of environmental credits to promote RNG growth 

When used as a transportation fuel, RNG generates additional revenue streams through Environmental Credits. These 
Environmental  Credits  are  provided  under  a  variety  of  programs,  including  the  national  Renewable  Fuel  Standards 
(“RFS”), and state-level Low Carbon Fuel Standard (“LCFS”) programs. 

The  RFS  program  requires  transportation  fuel  to  contain  a  minimum  volume  of  renewable  fuel.  To  fulfill  this 
regulatory mandate, the EPA obligates refiners and importers (“Obligated Parties”) to blend renewable fuel with standard 
fuel to meet renewable volume obligations (“RVOs”). Obligated Parties can comply with RVOs by either blending RNG 
into their existing fuel supply or purchasing Renewable Identification Numbers, or RINs. RINs are generated when eligible 
renewable fuels are produced or imported and blended with a petroleum product for use as a transportation fuel. The RFS 
program has been a key driver of growth in the RNG industry since 2014 when the EPA ruled that RNG, when used as a 
transportation fuel, would qualify for D3 RINs (for cellulosic biofuels), which are generally the most valuable among the 
four categories of RINs. In 2021, we generated 47% of all D3 RINs in the U.S. 

The monetization of RNG also benefits from low-carbon fuel initiatives at the state-level, specifically from established 
programs in California and Oregon. California’s LCFS (“CA LCFS”) program requires fuel producers and importers to 
reduce the carbon intensity (“CI”) of their products, with goals of a 10% reduction in carbon emissions from 1990 levels 

8 

by 2020 and a 20% reduction by 2030. CARB awards CA LCFS credits to RNG projects based on each project’s CI score 
relative  to  the  target  CI  score  for  gasoline  and  diesel  fuels.  The  CI  score  represents  the  overall  net  impact  of  carbon 
emissions  for  each  RNG  pathway  and  is  determined  on  a project-by-project basis.  Because  our  business  involves  the 
capture and transformation of waste methane into a renewable source of energy, our customers are able to significantly 
reduce, if not eliminate, GHG emissions from their commercial transportation activities.  Further, CARB calculates that 
RNG produced by livestock farms as carbon negative, generating substantial incremental CA LCFS credits.  Multiple other 
states, including New York, Washington, and New Mexico are considering LCFS initiatives like those implemented in 
California and Oregon. In 2021, we generated 37% of all LCFS credits under Bio-CNG and Bio-LNG pathways in the CA 
LCFS. 

Our Strategy  

We aim to maintain and increase our position as the leading provider of RNG to the commercial vehicle market in 
North America, and our goal is to deliver 100% RNG to our entire fueling infrastructure by 2025. We support this objective 
through a multi-pronged strategy of: 

• 

• 

• 

• 

• 

promoting the reduction of GHG emissions and expanding the use of renewable fuels to displace fossil-based 
fuels; 

increasing  supply  of  RNG  through  the  development  of  new  project  investment  opportunities,  expanding  our 
existing supplier portfolio, and leveraging our existing fuel network and customer relationships; 

empowering our customers to achieve their sustainability and carbon reduction objectives; 

leveraging our management expertise; and 

utilizing our environmental, health and safety and compliance leadership. 

Promoting the reduction of methane emissions and expanding the use of renewable fuels to displace fossil-based fuels. 

We share the renewable fuel industry’s commitment to provide sustainable renewable energy solutions and to offer 
products with high economic and ecological value. By simultaneously replacing fossil-based fuels and reducing overall 
methane emissions, our business has a substantial positive environmental impact. We are committed to the sustainable 
development, deployment, and utilization of RNG to reduce the country’s dependence on fossil fuels.  In addition to its 
methane  emission  benefits,  the  increased  production  and  use  of  RNG  has  several  other  environmental  benefits. 
Anaerobically digested livestock waste produces significantly less odor than conventional storage and land application 
systems. The odor of stored livestock waste mainly comes from volatile organic acids and hydrogen sulfide, which has a 
“rotten egg” smell. In an anaerobic digester, volatile organic compounds are reduced to methane and carbon dioxide, which 
are  odorless  gases.  The  volatized  fraction  of  hydrogen  sulfide  is  captured  with  the  collected  ADG  and  destroyed.  
Anaerobic digestion provides several water quality and land conservation benefits as well. Digesters, particularly heated 
digesters, can destroy more than 90% of disease-causing bacteria that might otherwise enter surface waters and pose a risk 
to human and animal health. Digesters also reduce biochemical oxygen demand (“BOD”). BOD is one measure of the 
potential for organic wastes to reduce dissolved oxygen in natural waters. Because fish and other aquatic organisms need 
minimum levels of dissolved oxygen for survival, farm practices that reduce BOD protect the health of aquatic ecosystems. 
In  addition  to  protecting  local  water  resources,  implementing  anaerobic  digesters  on  livestock  facilities  improves  soil 
health. Adding digestate to soil increases the organic matter content, reduces the need for chemical fertilizers, improves 
plant growth and alleviates soil compaction. Further, digestion converts nutrients in manure to a more accessible form for 
plants to use. The risks of water and soil contamination from flooding of open lagoons are also mitigated by digesters. 

Increasing  supply  of  RNG  through  the  development  of  new  project  opportunities,  expanding  our  existing  supplier 
portfolio, and leveraging our extensive fueling station network and customer relationships.   

In our view, the market has not yet unlocked the full potential of RNG.  We believe we were the first to deliver RNG 
to the commercial vehicle fuels market, have the most extensive RNG fueling infrastructure and customer relationships, 

9 

and our stations and customer relationships allow us to obtain and deliver substantially more RNG to vehicle operators 
than any other participant in the market.  This is important because RNG must be placed in vehicle fuel tanks to generate 
the valuable Environmental Credits.   

Dependable and economic sources of RNG are critical to our success. We continue to leverage our relationships built 
over the past several decades to identify and execute new RNG project development and supply offtake opportunities.  
These come from our relationships with feedstock owners and project developers who value our long operating history, 
strong  reputation  in  the  industry  and  unmatched  access  to  fueling  infrastructure  and  vehicle  operators  for  certainty  of 
Environmental Credit generation. Based on the foregoing, we believe that we are presented with nearly every material 
development, supply and distribution opportunity in the market. 

We exercise financial discipline in pursuing projects by targeting project returns that are in line with the relative risk 
of the specific projects and associated feedstock costs and any related attributes that can be monetized. We also support 
third parties that own RNG production facilities by entering into long-term RNG supply offtake agreements.  As these 
facility  owners  expand  their  operations,  we  provide  additional  access  to  our  fueling  infrastructure  and  customer 
relationships. 

As of December 31, 2021, we obtain RNG from over 60 supply sources. We believe that we have one of the largest 
and most diverse supply portfolios in the RNG industry, which allows us to provide certainty of RNG supply to our vehicle 
operator customers. 

In our view, all the foregoing gives us a competitive advantage relative to existing and new market entrants. 

Empowering our customers to achieve their sustainability and carbon reduction objectives. 

In November 2021, global leaders met in Glasgow for the United Nations Climate Change Conference (“COP26”) to 
draw up a successor plan to the Paris Agreement. With evidence indicating that the Paris Agreement targets may fall short 
of limiting global warming to 1.5°C, governments and regulators globally face mounting public pressure to address the 
threat of climate change. The United States has re-joined the Paris Agreement and key investors have made climate change 
risk management a key priority: BlackRock stated in its 2021 stewardship expectations guidelines that “[t]he events of 
[2020] have  intensified our  conviction  that sustainability  risk—and  climate  risk  in particular—is  investment  risk”  and 
plans to expand its engagement to the over 1,000 companies that are responsible for producing 90% of GHG emissions in 
its investment portfolio. Similarly, in his 2021 letter to boards, Cyrus Taraporevala, State Street’s CEO and President, said 
the asset manager will be elevating its focus on climate risk, noting that ahead of COP26, “policymakers are assessing 
progress on climate change action . . . many jurisdictions are signaling their intentions to make climate risk disclosure 
mandatory.” Vanguard has determined that “it is critical that public company boards fully understand and own climate-
related risks.” 

We  are uniquely  positioned  to  empower our  customers  to  achieve  their sustainability  and  carbon  reduction goals.  
Because our business involves the capture and transformation of waste methane into a renewable source of energy, we 
believe our  customers  can  significantly reduce,  if  not  eliminate, GHG emissions  from  their  commercial  transportation 
activities.  Further, our RNG is available today to reduce climate harming GHG and meet sustainability objectives and at 
a cost to customers that is very competitive to other fuels like diesel. We also assist our customers in their transition to 
cleaner transportation fuels by helping them obtain federal, state and local tax credits, grants and incentives, providing 
vehicle financing, including through our Zero Now and Chevron Adopt-a-Port programs, engineering and constructing 
fueling stations, and facilitating customer selection of vehicle specifications that best meet their needs. 

Management expertise 

Our management team has decades of combined experience in the alternative vehicle fueling industry.  We believe 
our team’s proven track record in alternative vehicle fuels and focus on RNG gives us a strategic advantage in continuing 
to grow our business profitably. Our diverse experience and integration of key technical, environmental, and administrative 
support  functions,  along  with  our  first-to-market  advantage,  further  our  ability  to  successfully  deliver  RNG  to  the 
commercial vehicle fuels market.   

10 

Environmental, health and safety and compliance leadership 

Our executive team places the highest priority on the health and safety of our staff and third parties, as well as the 
preservation of the environment. Our corporate culture is built around supporting these priorities, as reflected in our well-
established practices and policies. By setting and maintaining high standards in the renewable energy field, we are often 
able to contribute positively to the safety practices and policies of our partners and customers. Our high safety standards 
include use of wireless gas monitoring safety devices, active monitoring of all field workers, performing environmental 
health  and  safety  (“EHS”)  audits  and  using  technology  throughout  our  safety  processes  from  employee  training  in 
compliance with operational processes and procedures to emergency preparedness. By extension, we incorporate our EHS 
standards into our subcontractor selection qualifications to ensure that our commitment to high EHS standards is shared 
by our subcontractors. For 2021, our Total Recordable Incident Rate (“TRIR”) was 1.55, which is lower than the 2020 
national average of 3.00 TRIR for all industries. As of December 31, 2021, we have not received any U.S. Occupational 
Health and Safety Administration (“OSHA”) or state OSHA citations in the last five years. 

How We Generate Revenue 

We  generate  revenue  from  selling  RNG  and  conventional  natural  gas  as  a  vehicle  fuel,  as  well  as  by  selling  the 
associated Environmental Credits.  RNG made up 78% of our vehicle fuel sales in 2021, and we expect 100% of our 
vehicle fuel sales to be RNG by 2025.  Although RNG has the same chemical composition as natural gas from fossil 
sources, it has unique Environmental Credits assigned to it due to its origin from low- and negative-carbon, renewable 
sources.  The Environmental Credits that we sell are composed of RINs and state low-carbon fuel credits, including CA 
LCFS credits, which are generated from the conversion of biogas to RNG that is used as a transportation fuel. 

In addition to revenues generated from sales of RNG and conventional natural gas as a vehicle fuel and Environmental 
Credits, we also generate revenues by providing O&M services for public and private RNG, natural gas and hydrogen 
vehicle fleet customer stations; selling and servicing compressors and other equipment used in RNG production and at 
RNG, natural gas and hydrogen stations; and obtaining federal, state and local tax credits, grants and incentives. 

We are experts in the engineering, design and construction of fueling stations.  When we build stations for customers, 
we charge construction, other fees, or lease rates based on the size and complexity of the project. Since 2008, we have 
served as the general contractor or supervised qualified third-party contractors to build over 440 fueling stations. 

•  Equipment for RNG stations consists of compressors, storage tanks, and dispensers. 

•  As operators deploy hydrogen-powered vehicles, we can modify our fueling stations and build additional stations 
to dispense clean hydrogen produced from our RNG.  The equipment for hydrogen stations includes compressors, 
storage tanks, and dispensers, provided that the cost of adding hydrogen fueling may be significant. 

•  We also have the capability to add high speed level 3 electric vehicle charging at our station sites, and our RNG 
can be used as a clean resource to power electric vehicles via on-site generation and/or routing to the electric grid 
serving our stations, although the cost of adding electric vehicle charging capacity may be significant.  

Key Customer Markets 

We serve customers in a variety of markets, including trucking, airports, refuse and public transit. We believe these 
customer  markets  are  well-suited  for  the  adoption  of  RNG  and  other  alternative  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. During the years ended December 31, 2019, 2020 and 2021, no 
single customer accounted for 10% or more of our total revenue. 

Trucking 

We believe heavy-duty trucking represents the greatest opportunity for RNG and other alternatives to be used as a 
vehicle fuel.  We estimate there are over 3.9 million Class 8 heavy-duty trucks operating in the U.S. using over 40 billion 

11 

gallons of diesel fuel each year.  As of December 31, 2021, we provided our fuels to over 4,000 heavy-duty trucks.  Because 
these high-mileage vehicles consume substantial amounts of fuel, operators can derive significant benefits from the carbon 
and GHG reductions associated with our vehicle fuels. We are focused on fueling more heavy-duty trucks, and many well-
known shippers, manufacturers, retailers and other truck fleet operators have started to use RNG fueled trucks to move 
their freight, including, among others, Amazon, Pepsi Frito-Lay, FedEx, Anheuser-Busch, USPS, UPS, Kroger, KeHe 
Distributors, Kenan Advantage Group, and Estes Express. 

Zero Now 

To help facilitate the transition of trucking fleets to our fuels, we have launched the Zero Now truck financing program, 
which is intended to increase the deployment of the commercially available RNG heavy-duty trucks in the U.S. The Zero 
Now program generally involves the following: 

•  One or more truck leasing or finance companies lease or sell RNG heavy-duty trucks to vehicle fleets pursuant 
to lease or sale agreements with the fleet operators and with us, providing for periodic payments by the fleet 
operators of amounts equal to the payments that will be made for the lease or purchase of an equivalent truck that 
operates on diesel fuel, and providing for payment by us of the incremental cost of the RNG truck over and above 
the diesel-equivalent truck; and 

•  The fleet operators participating in the program enter into fueling agreements with us, under which the operators 
agree to purchase from us, and we agree to supply, minimum monthly volumes of RNG at prices (which are lower 
than diesel prices per GGE) to operate the trucks leased or purchased in the program and allow us to recoup our 
payment of the incremental cost of the RNG trucks. 

We previously entered into the following agreements to implement the Zero Now program: 

• 

• 

In January 2019, we entered into a term credit agreement with Société Générale (“SG”), as lender, under which 
we were permitted to draw, from time to time, through January 2, 2022, up to an aggregate of $100.0 million to 
satisfy our payment obligations for the incremental cost of RNG trucks under the truck lease or sale agreements 
described above; and 

In January 2019, we entered into a credit support agreement with TotalEnergies Holdings USA Inc. (“THUSA”), 
a  wholly  owned  subsidiary  of  TotalEnergies  (which  indirectly  through  another  of  its  subsidiaries,  holds 
approximately 19% of our outstanding common stock), pursuant to which THUSA guaranteed our obligations 
under the term credit agreement with SG. In consideration for such guaranty, we agreed to pay to THUSA a 
quarterly fee at a rate per annum equal to 10% of the average amount owed by us under the term credit agreement 
during the preceding quarter. 

In addition, we are supporting the growth of the RNG heavy-duty truck market through commodity swap arrangements 
under which we have locked in a discount price to diesel for customers fueling with us; our negotiation of favorable fuel 
tank pricing from manufacturers, which we are passing along to our customers; and our network of truck-friendly fueling 
stations (we refer to this network as “America’s Natural Gas Highway” or “ANGH”), which we have built in key locations 
nationwide. Many existing ANGH stations are located at Pilot Travel Centers, the largest truck fueling operator in the 
United States. 

Chevron Adopt-a-Port Program 

In 2020, we partnered with Chevron on Adopt-a-Port, an initiative that  provides truck operators serving the ports 
of Los Angeles and Long Beach with RNG to reduce emissions. For its part, Chevron provides funding for Adopt-a-Port 
and supplies RNG to Clean Energy stations near the ports. Chevron’s funding allows truck operators to subsidize the cost 
of  buying  new  RNG-powered  trucks.  We  manage  the  program,  including  offering  fueling  services  for  qualified  truck 
operators.  Truck operators participating in the program, which supports the ports’ Clean Trucks Program and Clean Air 
Action Plan, fuel at our stations supplied with Chevron RNG.  Importantly, Adopt-a-Port provides a meaningful air quality 
improvement for the adversely impacted communities around the port – such communities typically have the worst air 

12 

quality in the nation. As of December 31, 2021, customers had ordered 211 trucks under Adopt-a-Port, and we expect over 
300 additional trucks to be ordered in 2022.  

Airports 

We estimate that vehicles serving airports in the United States, including airport delivery fleets, rental car and parking 
passenger shuttles and taxis, consume an aggregate of approximately two billion gallons of fuel per year. Additionally, 
many U.S. airports face emissions challenges and are under regulatory directives and political pressure to reduce pollution, 
particularly as part of any expansion plans. As a result, many of these airports have adopted various strategies to address 
tailpipe  emissions,  including  rental  car  and  hotel  shuttle  consolidation  and  requiring  or  encouraging  service  vehicle 
operators to switch their fleets to our vehicle fuels. As of December 31, 2021, we serve customers at 32 airports. 

Refuse 

We believe that there are nearly 200,000 refuse trucks in the United States that collect and haul refuse and recyclables, 
which aggregately consume approximately two billion gallons of fuel per year. We estimate that approximately 60% of 
new refuse trucks are capable of operating on RNG, up from approximately 3% of new refuse trucks in 2008. Refuse 
haulers are increasingly adopting trucks that run on our vehicle fuels to realize operational savings and to address demands 
for  reduced  emissions  from  the  public,  investors,  and  governmental  agencies.  As  of  December  31,  2021,  we  fuel 
approximately 14,000 refuse vehicles for customers including Waste Management, Republic Services, Waste Connections, 
GFL Environmental, Atlas Disposal, Burrtec, CR&R, Recology and Waste Pro, among others. We also provide vehicle 
fueling services to municipal refuse fleets. 

Public Transit 

We  believe  that  there  are  over  72,000  municipal  transit  buses  operating  in  the  United  States.  In  many  areas, 
increasingly  stringent  emissions  standards  have  limited  the  fueling  options  available  to  public  transit  operators.  Also, 
transit agencies typically fuel at a central location and use high volumes of fuel. We estimate that transit agencies in the 
United States consume approximately one billion gallons of fuel per year. Many transit agencies have been early adopters 
of vehicles using our fuels, and over 25% of existing transit buses and approximately 35% of new transit buses can operate 
on  RNG.  As  of  December  31, 2021, we  fuel  over  9,000  transit  vehicles  for  customers  including Los  Angeles  County 
Metropolitan  Transit  Authority,  New  York  MTA,  Foothill  Transit  (Los  Angeles  County,  California),  Orange  County 
Transit  Authority,  Santa  Monica  Big  Blue  Bus,  Dallas  Area  Rapid  Transit,  Phoenix  Transit,  New  Jersey  Transit, 
Jacksonville  Transportation  Authority,  NICE  Bus  (Nassau  County,  New  York)  and  Washington  Metro  Area 
Transportation Authority. 

Competition 

There  are  many  other  companies  operating  in  the  renewable  energy  and waste-to-energy space.  Regarding  RNG 
production and supply, our primary competition is from other companies or solutions for access to biogas from waste. 
Evolving consumer preferences, regulatory conditions, ongoing waste industry trends, and project economics have a strong 
effect on the competitive landscape. We have demonstrated a track record of strategic flexibility across our history which 
has allowed us to pivot towards projects and markets that we believe deliver optimal returns and stockholder value in 
response to changes in market, regulatory and competitive pressures. The biogas and RNG markets are heavily fragmented. 
We believe we are in a strong position to compete for new project development and supply opportunities. Competition for 
such opportunities, however, including the prices being offered for fuel supply, affect the profitability of the opportunities 
we pursue, and may make opportunities unsuitable to pursue.  

The market for vehicle fuels is highly competitive. The biggest competition for RNG use as a vehicle fuel is gasoline 
and diesel because most vehicles in our key markets are powered by these fuels. Many established businesses are in the 
market for RNG and other alternatives for use as vehicle fuel, including alternative vehicle and alternative fuel companies, 
refuse collectors, industrial gas companies, truck stop and fuel station owners, fuel providers, utilities and their affiliates 
and other organizations. We also compete with suppliers of other alternative vehicle fuels, including renewable diesel, 
biodiesel and ethanol, as well as producers and fuelers of alternative vehicles, including hybrid, electric and hydrogen-

13 

powered vehicles. Additionally, our stations compete directly with other natural gas fueling stations and indirectly with 
electric vehicle charging stations and fueling stations for other vehicle fuels. In addition, we transport and sell CNG through 
NG Advantage’s virtual natural gas pipelines and interconnects and compete with other participants in this market. 

If the alternative vehicle fuel market grows then the number and type of participants in this market and their level of 
capital and commitments to alternative vehicle fuel programs will increase. We compete for vehicle fuel users based on 
demand  for  the  type  of  fuel,  which  may  be  affected  by  a  variety  of  factors,  including,  among  others,  cost,  supply, 
availability,  quality,  cleanliness,  and  safety  of  the  fuel;  cost,  availability  and  reputation  of  vehicles  and  engines; 
convenience  and  accessibility  of  fueling  stations;  regulatory  mandates  and  other  requirements;  and  recognition  of  the 
brand. We believe we compare favorably with our competitors based on these factors; however, some of our competitors 
have substantially greater financial, marketing, and other resources than we have. As a result, these competitors may be 
able to respond more quickly to changes in customer preferences, legal requirements or other industry or regulatory trends; 
devote greater resources to the development, promotion and sale of their products; adopt more aggressive pricing policies, 
dedicate  more  effort  to  infrastructure  and  systems  development  in  support  of  their  business  or  product  development 
activities; implement more robust or creative initiatives to advance consumer acceptance of their products; or exert more 
influence on the regulatory landscape that impacts the vehicle fuels market. 

Governmental Regulation 

We are subject to a variety of federal, state and local laws and regulations relating to the environment, health and 
safety, labor and employment, building codes and construction, zoning and land use, the government procurement process, 
any political activities or lobbying in which we may engage, public reporting and taxation, among others. Many of these 
laws and regulations are complex, change frequently and have become more stringent over time. Any changes to existing 
regulations, adoption of new regulations or failure by us to comply with applicable regulations may result in significant 
additional expense to us or our customers or a variety of administrative, civil, and criminal enforcement measures, any of 
which  could  have  a  material  adverse  effect  on  our  business,  reputation,  financial  condition  and  results  of  operations. 
Certain regulations that significantly affect our various operating activities are described below. Compliance with these 
regulations has not had a material effect on our capital expenditures, earnings, or competitive position to date, but new 
regulations or amendments to existing regulations to make them more stringent could have such an effect in the future. 
We cannot estimate the expenses we may incur to comply with potential new laws or changes to existing laws, or the other 
potential  effects  these  laws  may  have  on  our  business,  and  these  unknown  costs  and  effects  are  not  specifically 
contemplated by our existing customer agreements or our budgets and cost estimates.   

We  are  subject  to  federal,  state,  and  local  air  quality,  solid  waste,  and  water  quality  regulations  and  permitting 
requirements.  Specific  construction  and  operating  permit  requirements  may  differ  among  states.  Specific  permits  we 
frequently  must  obtain  include  air  permits,  nonhazardous  waste  management  permits,  pollutant  discharge  elimination 
permits,  and  beneficial  use  permits.  We  must  also  maintain  compliance  with  relevant  federal,  state  and  local 
environmental, health and safety requirements. 

RNG projects are subject to federal RFS program regulations. The EPA administers the RFS program with volume 
requirements for several categories of renewable fuels. The EPA’s RFS regulations establish rules for fuel supplied and 
administer the RIN system for compliance, trading credits and rules for waivers. The EPA calculates a blending standard 
for each year based on estimates of gasoline usage from the Department of Energy’s Energy Information Agency. Separate 
quotas and blending requirements are determined for cellulosic biofuels, biomass-based diesel, advanced biofuels, and 
total renewable fuel. Further, we are required to register each RNG project with the EPA and relevant state regulatory 
agencies.  We  qualify  our  RINs  through  a  voluntary  Quality  Assurance  Plan,  which  typically  takes  from  three  to  five 
months from first injection of RNG into the commercial pipeline system. Further, we may make a large project investment 
prior to receiving the regulatory approval and RIN qualification. In addition to registering each RNG project, we are subject 
to quarterly audits under the Quality Assurance Plan of our projects to validate our qualification. 

Our operations are also subject to state renewable fuel standard regulations. The CA LCFS program requires producers 
of petroleum-based fuels to reduce the CI of their products, which began with a quarter of a percent in 2011 to a 10% total 
reduction by 2020, and a 20% total reduction by 2030. Petroleum importers, refiners and wholesalers can either develop 
their  own low-carbon fuel  products  or  buy  CA  LCFS  credits  from  other  companies  that  develop  and  sell low-

14 

carbon alternative fuels, such as biofuels, electricity, natural gas, or hydrogen. We are subject to a qualification process 
like that for RINs, including verification of CI levels and other requirements, existing for CA LCFS credits. 

Before  an  RNG  project  can  be  developed,  all  Resource  Conservation  and  Recovery  Act  (“RCRA”)  Subtitle  D 
requirements (requirements for nonhazardous solid waste management) must be satisfied. In particular, because methane 
is explosive in certain concentrations and poses a hazard if it migrates, biogas collection systems must meet RCRA Subtitle 
D  standards  for  gas  control.  RNG  projects  may  be  subject  to  other  federal,  state  and  local  regulations  that  impose 
requirements for nonhazardous solid waste management. 

Certain of our operations may be subject to federal requirements to prepare for and respond to spills or releases from 
tanks and other equipment and provide training on operation, maintenance and discharge prevention procedures and the 
applicable pollution control laws. We may be required to develop spill prevention, control and countermeasure plans to 
memorialize our preparation and response plans and to update them on a regular basis. 

Our operations may result in liability for hazardous substances or other materials placed into soil or groundwater. 
Pursuant to the Comprehensive Environmental Response, Compensation and Liability Act of 1980 or other federal, state, 
or local laws governing the investigation and cleanup of sites contaminated with hazardous substances, we may be required 
to investigate and/or remediate soil and groundwater contamination at our projects, contiguous and adjacent properties and 
other properties owned and/or operated by third parties. 

Additionally,  biogas  projects  may  need  to  obtain  National  Pollutant  Discharge  Elimination  System  permits  if 
wastewater is discharged directly to a receiving water body. If wastewater is discharged to a local sewer system, biogas 
projects may need to obtain an industrial wastewater permit from a local regulatory authority for discharges to a Publicly 
Owned Treatment Works. The authority to issue these permits may be delegated to state or local governments by the EPA. 
The permits, which typically last five years, limit the quantity and concentration of pollutants that may be discharged. 
Permits may require wastewater treatment or impose other operating conditions to ensure compliance with the limits. In 
addition, the Clean Water Act and implementing state laws and regulations require individual permits or coverage under 
general permits for discharges of storm water runoff from certain types of facilities. 

On September 23, 2020, the California Governor issued an Executive Order N-79-20 setting goals for expanding the 
sale and use of zero-emission vehicles within California, including 100% of in-state sales of new passenger cars and trucks 
to be zero-emission by 2035, and 100% of medium- and heavy-duty truck vehicles in California to be zero-emission by 
2045 for all operations where feasible. The Governor also directed CARB to develop and propose regulations to achieve 
these goals consistent with state and federal law. This order is the latest in a series of targets set by California to transform 
the energy and transportation fuel sectors and reduce GHG emissions. Executive Order B55-18 sets a statewide target to 
achieve carbon neutrality no later than 2045. The transitioning of California’s energy markets to increased reliance on 
renewable and carbon-free sources has the potential to create favorable market conditions for RNG but could also harm 
our  vehicle  fueling  business.  Future  regulatory  actions  will  be  required  to  meet  the  state’s zero-emission and  carbon 
neutrality targets. 

Employees and our Human Capital 

As of December 31, 2021, we employed 482 people. We have not experienced any work stoppages, and none of our 

employees are subject to collective bargaining agreements. 

The success and growth of our business is significantly correlated with our ability to recruit, train, promote and retain 
talented individuals at all levels of our organization. To succeed in a competitive labor market, we have developed and 
maintain  key  recruitment  and  retention  strategies.  These  include  competitive  salary  structures,  including  bonus 
compensation programs, and competitive benefits policies, including paid time off for vacations, sick leave and holidays, 
short-term disability coverage, group term life insurance, and various retirement savings and incentive plans. 

Safety of our personnel is a core value of Clean Energy and maintaining a safe work environment is critical to an 
energy  company’s  ability  to  attract  and  retain  employees. To  support  the  health  and  safety  of  our  employees  during 
the COVID-19 pandemic,  we  have  enhanced  our  safety  protocols  to  promote  social  distancing,  implemented  more 

15 

extensive  cleaning  and  sanitation  processes,  incorporated  temperature  checks,  required  facial  covering,  instituted 
employee questionnaires, restricted corporate travel and visitor access to facilities, and implemented work-from-home and 
work-flex initiatives for certain employees. 

Sales and Marketing 

We  market  our  brands,  products  and  services  primarily  through  our  direct  sales  force,  which  includes  sales 
representatives  covering  all  of  our  major  geographic  and  customer  markets,  as  well  as  attendance  at  trade  shows  and 
participation in industry conferences and events. Our sales and marketing team also works closely with federal, state and 
local government agencies to provide education about the value of our vehicle fuels and to keep abreast of proposed and 
newly adopted regulations that affect our industry. 

Seasonality 

To some extent, our business may experience seasonality. For more information, see the discussion under “Seasonality 

and Inflation” in Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” 

Intellectual Property 

Our intellectual property rights primarily consist of trade secrets, patents, know-how and trademarks, and we rely on 
a combination of trademark laws, trade secret laws, confidentiality provisions and other contractual provisions to protect 
these rights and our proprietary information. These intellectual property rights help us to retain existing business and secure 
new relationships with customers. 

More Information 

Our website is located at www.cleanenergyfuels.com. We make available, free of charge on our website, our annual 
reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed 
or  furnished  pursuant  to  Section 13(a) or  15(d) of  the  Exchange  Act  as  soon  as  reasonably  practicable  after  we 
electronically file such material with, or furnish it to, the SEC. The SEC maintains a website at www.sec.gov that contains 
reports, proxy and information statements and other information regarding issuers that file electronically with the SEC, 
including us.  All references to our website in this report are inactive textual references, and the contents of our website 
are not incorporated into this report. 

Item 1A. Risk Factors 

An investment in our Company involves a high degree of risk of loss. You should carefully consider the risk factors 
discussed below and all of the other information included in this report before you make any investment decision regarding 
our securities. We believe the risks and uncertainties described below are the most significant we face, but additional risks 
and  uncertainties  not  known  to  us  or  that  we  currently  deem  immaterial  could  also  be  or  become  significant.  The 
occurrence  of  any  of  these  risks  could  harm  our  business,  financial  condition,  results  of  operations,  prospects  and 
reputation and could cause the trading price of our common stock to decline. 

Risks Related to Our Business 

The COVID-19 pandemic and measures intended to reduce its spread has, and may continue to, adversely affect our 
business, results of operations and financial condition. 

Given the dynamic nature of the novel coronavirus (“COVID-19”) pandemic, including the travel bans, quarantines, 
business  limitations  and  other  governmental  restrictions  that  were  previously  instituted  and  may  in  the  future  be 
reinstituted,  and  the  related  adverse  impact  these  restrictions  have  had,  and  may  continue  to  have,  on  the  economy 
generally, our business and financial results may continue to be adversely affected by the COVID-19 pandemic. 

16 

Our  operations  have  been  designated  “essential  critical  infrastructure  work”  in  the  energy  sector  by  the  U.S. 
Department  of  Homeland  Security,  meaning  that  we  have  been  able  to  continue  full  operations.  Despite  our  essential 
designation and our continued operations, however, we are subject to various risk and uncertainties because of the COVID-
19 pandemic that could materially adversely affect our business, results of operations and financial condition, including 
the following: 

• 

• 

• 

a further delay in the adoption of our RNG and natural gas vehicle fuels by heavy-duty trucks and/or a delay in 
increasing the use of our vehicle fuels; 

a continued or further decrease in the volume of truck and fleet operations, including shuttle buses at airports, 
and lower-than-normal levels of public transportation generally, which have resulted and may continue to result 
in decreased demand for our vehicle fuels; and 

the impact of business disruptions on the production of vehicles and engines that use our fuels, which has resulted 
in, and may continue to result in, plant closures, decreased manufacturing capacity, and delays in deliveries. 

The duration and extent of the impact of the COVID-19 pandemic on our business and financial results will depend 
on future developments, including the duration, severity and spread of the pandemic, actions taken to contain its spread, 
any further resurgence of COVID-19, the severity and transmission rates of new variants of COVID-19, the availability, 
distribution, public acceptance and efficacy of vaccines and therapeutics for COVID-19, and how quickly and to what 
extent normal economic and operating conditions can resume within the markets in which we operate, each of which are 
highly uncertain at this time and outside of our control.  Even after the COVID-19 pandemic subsides, we may continue 
to experience adverse effects to our business and financial results because of its global economic impact, including any 
economic downturn or recession that has occurred or may occur. The adverse effect of the COVID-19 pandemic on our 
business, results of operations and financial condition could be material. 

Our success is dependent on the willingness of fleets and other consumers to adopt our vehicle fuels, which may not 
occur in a timely manner, at expected levels or at all. 

Our success is highly dependent on the adoption by fleets and other consumers of our RNG and conventional natural 
gas vehicle fuels. The market for our vehicle fuels has experienced slow, volatile and unpredictable growth in many sectors. 
For example, adoption and deployment of our vehicle fuels in heavy-duty trucking has been slower and more limited than 
we anticipated. Also, other important fleet markets, including airports and public transit, had slower volume and customer 
growth in 2019, 2020 and 2021 that may continue. If the market for our vehicle fuels does not develop at improved rates 
or levels, or if a market develops but we are not able to capture a significant share of the market or the market subsequently 
declines, our business, prospects, financial condition, and operating results would be harmed. 

Factors that may influence the adoption of our vehicle fuels, many of which are beyond our control, include, among 

others: 

•  Lack of demand for trucks that use our vehicle fuels; 

•  Adoption of government policies or programs or increased publicity or popular sentiment in favor of vehicles or 
fuels other than RNG and natural gas, including long-standing support for gasoline and diesel-powered vehicles, 
changes to emissions requirements applicable to vehicles powered by gasoline, diesel, RNG, natural gas, or other 
vehicle fuels and/or growing support for electric and hydrogen-powered vehicles; 

•  Perceptions about the benefits of our vehicle fuels relative to gasoline, diesel and other alternative vehicle fuels, 

including with respect to factors such as supply, cost savings, environmental benefits and safety; 

• 

• 

Increases, decreases or volatility in the supply, demand, use and prices of crude oil, gasoline, diesel, RNG, natural 
gas and other vehicle fuels, such as electricity, hydrogen, renewable diesel, biodiesel and ethanol; 

Inertia among fleets and fleet vehicle operators, who may be unable or unwilling to prioritize converting a fleet 
to  our  vehicle  fuels  over  an  operator’s  other  general  business  concerns,  particularly  if  the  operator  is  not 

17 

sufficiently incentivized by emissions regulations or other requirements or lacks demand for the conversion from 
its customers or drivers; 

•  Vehicle cost, fuel efficiency, availability, quality, safety, convenience (to fuel and service), design, performance 
and residual value, as well as operator perception with respect to these factors, generally and in our key customer 
markets and relative to comparable vehicles powered by other fuels; 

•  The development, production, cost, availability, performance, sales and marketing and reputation of engines that 
are well-suited for the vehicles used in our key customer markets, including heavy-duty trucks and other fleets; 

• 

Increasing  competition  in  the  market  for  vehicle  fuels  generally,  and  the  nature  and  effect  of  competitive 
developments  in  this  market,  including  improvements  in  or  perceived  advantages  of  other  vehicle  fuels  and 
engines powered by these fuels; 

•  The availability and effect of environmental, tax or other government regulations, programs or incentives that 
promote our products or other alternatives as a vehicle fuel, including certain programs under which we generate 
credits by selling RNG as a vehicle fuel, as well as the market prices for such credits; and 

•  Emissions  and  other  environmental  regulations  and  pressures  on  producing,  transporting,  and  dispensing  our 

fuels. 

In June 2020, CARB adopted the Advanced Clean Trucks regulation, which requires manufacturers to sell a gradually 
increasing proportion of zero-emission electric trucks, vans and pickup trucks from 2024 onwards. By the year 2045, the 
Advanced  Clean  Trucks regulation  seeks  to  have  every new commercial  vehicle  sold  in  California be  zero-emissions. 
Further,  in  September  2020,  the  Governor  of  the  State  of  California  issued  an  executive  order  (the  “September  2020 
Executive Order”) providing that it shall be the goal of California that (i) 100% of in-state sales of new passenger cars and 
trucks will be zero-emission by 2035, (ii) 100% of medium- and heavy-duty vehicles in California will be zero-emission 
by 2045 for all operations, where feasible, and by 2035 for drayage trucks, and (iii) the state will transition to 100% zero-
emission off-road vehicles and equipment by 2035 where feasible. The September 2020 Executive Order also directed 
CARB to develop and propose regulations and strategies aimed at achieving the foregoing goals. Among other things, we 
believe  the  intent  of  the  Advanced  Clean  Trucks  regulation  and  the  September  2020  Executive  Order  is  to  limit  and 
ultimately  discontinue  the  production  and  use  of  internal  combustion  engines  because  such  engines  have  “tailpipe” 
emissions.  If  either  the  Advanced  Clean  Trucks  regulation  or  any  additional  regulations  adopted by CARB,  including 
pursuant to the September 2020 Executive Order, is permitted to take effect, it may slow, delay or prevent the adoption by 
fleets and other commercial consumers of our vehicle fuels, particularly in California. Moreover, because of the adoption 
of the Advanced Clean Trucks regulation and the issuance of the September 2020 Executive Order, other states have taken 
steps to enact similar regulations, which actions may accelerate if either regulation is permitted to take effect, thereby 
slowing, delaying or preventing the adoption of our vehicle fuels in those states as well. In December 2021, President 
Biden signed an executive order (the “2021 Executive Order”) that directs the federal government to achieve certain goals, 
including purchasing 100% zero-emission vehicles by 2035 for its fleet of over 600,000 cars and trucks. 

Our RNG business may not be successful. 

Our RNG business consists of procuring RNG from projects we plan to develop and own or from projects owned by 

third-party producers and reselling this RNG through our fueling infrastructure. 

The success of our RNG business depends on our ability to secure, on acceptable terms, a sufficient supply of RNG; 
sell this RNG in adequate volumes and at prices that are attractive to customers and produce acceptable margins for us; 
and sell Environmental Credits we may generate under applicable federal or state programs from our sale of RNG as a 
vehicle fuel at favorable prices. 

Our ability to maintain an adequate supply of RNG is subject to risks affecting RNG production. Projects that produce 
RNG often experience unpredictable production levels or other difficulties due to a variety of factors, including, among 
others, problems with equipment, severe weather, droughts, financial condition of the applicable ADG and LFG source 
owner,  health  crises,  including  the  ongoing  COVID-19  pandemic,  construction  delays,  technical  difficulties,  high 
operating costs, limited availability, or unfavorable composition of collected feedstock gas, and plant shutdowns caused 

18 

by  upgrades,  expansion  or  required  maintenance.  In  addition,  increasing  demand  for  RNG  will  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. If we or any of our RNG suppliers experience these or 
other difficulties in RNG production processes, or if competition for RNG development projects and supply increases, 
then our supply of RNG and our ability to resell it as a vehicle fuel could be jeopardized. 

Our ability to generate revenue from our sale of RNG or our generation and sale of Environmental Credits depends 
on  many  factors,  including  the  markets  for  RNG  as  a  vehicle  fuel  and  for  Environmental  Credits.  The  markets  for 
Environmental Credits have been volatile and unpredictable in recent periods, and the prices for these credits are subject 
to fluctuations. For example, in 2021, market prices for RINs have been as high as $3.81 and as low as $1.95. Additionally, 
the value of Environmental 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  and  use  of  other  fuels  in  the programs, or other  conditions.   Our  ability  to generate  revenue  from  sales  of 
Environmental 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 restricted permanently limited or lost entirely, and we 
could also 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 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. We experienced many of 
these effects in connection with the administrative review by CARB of our generation of LCFS Credits in the third and 
fourth quarters of 2017, during which we were restricted from selling and transferring accumulated LCFS Credits, we were 
required to make cash payments to third parties to settle preexisting commitments to transfer LCFS Credits, and certain of 
our  LCFS  Credits  were  invalidated.  Any  permanent  or  temporary  discontinuation  or  suspension  of  federal  and  state 
programs to provide credits, grants and incentives, such as an alternative fuel tax credit (“AFTC”), would also adversely 
impact our revenue.  Moreover, in the absence of programs that allow us to generate and sell Environmental Credits or 
other federal and state programs that support the RNG vehicle fuel market, or if our customers are not willing to pay a 
premium for RNG, we may be unable to operate our RNG business profitably or at all. 

Our commercial success depends on our ability and the ability of our third-party supply sources to successfully develop 
and operate projects and produce expected volumes of RNG. 

Our specific focus on RNG exposes us to risks related to the supply of and demand for RNG and Environmental 
Credits, the cost of capital expenditures, government regulation, and economic conditions, among other factors. As an 
RNG supplier we may also be negatively affected by lower RNG production resulting from lack of feedstock, mechanical 
breakdowns,  faulty  technology,  competitive  markets  or  changes  to  the  laws  and  regulations  that  mandate  the  use  of 
renewable energy sources. 

In addition, other factors related to the development and operation of renewable energy projects could adversely affect 
our business, including: (i) changes in pipeline gas quality standards or other regulatory changes that may limit our ability 
to transport RNG on pipelines for delivery to vehicles or increase the costs of processing RNG to allow for such deliveries; 
(ii)  construction  risks,  including  the  risk  of  delay,  that  may  arise  because  of  inclement  weather,  labor  disruptions  or 
increases  in  costs  for  equipment  and  construction  materials;  (iii)  operating  risks;  (iv)  weather  conditions,  including 
droughts; (v) financial condition of the applicable ADG and LFG source owner; (vi) health of the applicable dairy herd; 
(vii)  consolidation  in  the  dairy  industry;  (viii)  budget  overruns;  (ix)  possible  liabilities  because  of  unforeseen 
environmental, construction, technological or other complications; (x) failures or delays in obtaining desired or necessary 
rights, including leases and feedstock agreements; and (xi) failures or delays in obtaining and keeping in good standing 
permits, authorizations and consents from local city, county, state and U.S. federal governments as well as local and U.S. 
federal governmental organizations.  Any of these factors could prevent completion or operation of projects, or otherwise 
adversely affect our business, financial condition, and results of operations.  

19 

Acquisition,  financing,  construction,  and  development  of  projects  by  us  or  our  partners  that  own  projects  may  not 
commence on anticipated timelines or at all. 

Our strategy is to continue to expand, including through the acquisition of additional projects and by signing additional 
supply agreements with third-party project owners. From time to time we and our partners enter into nonbinding letters of 
intent for projects.  Until the negotiations are final, however, and the parties have executed definitive documentation, we 
or  our  partners  may  not  be  able  to  consummate  any  development  or  acquisition  transactions,  or  any  other  similar 
arrangements, on the terms set forth in the applicable letter of intent or at all. 

The acquisition, financing, construction and development of projects involves numerous risks, including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the ability to obtain financing for a project on acceptable terms or at all; 

difficulties in identifying, obtaining, and permitting suitable sites for new projects; 

failure to obtain all necessary rights to land access and use; 

inaccuracy of assumptions with respect to the cost and schedule for completing construction; 

inaccuracy of assumptions with respect to the biogas potential, including quality, volume, and asset life; 

delays in deliveries or increases in the price of equipment; 

permitting and other regulatory issues, license revocation and changes in legal requirements; 

increases in the cost of labor, labor disputes and work stoppages; 

failure to receive quality and timely performance of third-party services; 

unforeseen engineering and environmental problems; 

cost overruns; 

accidents involving personal injury or the loss of life; and 

•  weather conditions, catastrophic events, including fires, explosions, earthquakes, droughts and acts of terrorism, 

and other force majeure events. 

We are dependent on the production of vehicles and engines in our key customer and geographic markets by vehicle 
and engine manufacturers, over which we have no control. 

Vehicle  and  engine  manufacturers  control  the  development,  production,  quality  assurance,  cost  and  sales  and 
marketing of their products, which shapes the performance, availability and reputation of these products in the marketplace. 
We are dependent on these manufacturers to succeed in our target markets, and we have no influence or control over their 
activities. For example, Cummins Westport is the only engine manufacturer for the RNG and natural gas heavy-duty truck 
market  in  the  United  States,  and  Cummins  Westport  and  other  original  equipment  manufacturers  currently  produce  a 
relatively small number of engines and vehicles that use our vehicle fuels. These manufacturers may decide not to expand 
or maintain, or may decide to discontinue or curtail, their engine or vehicle product lines for a variety of reasons, including 
as a result of the adoption of government policies or programs such as the Advanced Clean Trucks regulation and the 
September 2020 Executive Order. Further, the supply of engines or vehicle product lines by these manufacturers has been 
be disrupted/delayed due to the COVID-19 pandemic. The limited production of engines and vehicles that use our fuels 
increases their cost and limits availability, which restricts large-scale adoption, and may reduce resale value, which may 
contribute to operator reluctance to convert their vehicles to our fuels. In addition, some operators have communicated to 
us  that  the  first-generation  models  of  heavy-duty  truck  engines  using  our  fuels  have  a  reputation  for  unsatisfactory 
performance,  and  that  this  reputation  or  their  first-hand  experiences  of  such  performance  may  be  a  factor  in  operator 
decisions regarding whether to convert their fleets to vehicles that use our fuels.  

20 

To  secure  ADG  RNG  from  new  projects  we  develop,  we  typically  face  a  long  and  variable  development  cycle  that 
requires significant resource commitments and a long lead time before we realize revenue. 

The development, design and construction process for ADG RNG projects generally lasts between 12 to 18 months 
on average. Prior to entering into a letter of intent with respect to an ADG RNG project, we typically conduct a preliminary 
assessment of whether the site is commercially viable based on our expected return on investment, investment payback 
period, and other operating metrics, as well as the necessary permits to develop a project on that site. After entering a 
project letter of intent, we perform a more detailed review of the site’s facilities, which serves as the basis for the final 
specifications of the project. Finally, we negotiate and execute contracts with the site owner. This extended development 
process  requires  the  dedication  of  significant  time  and  resources  from  our  personnel,  with  no  certainty  of  success  or 
recovery of our expenses. Further, upon commencement of operations, it takes about 12 months for the project to ramp up 
to expected production level, receive necessary registrations and approvals from the Environmental Protection Agency 
(the “EPA”) and CARB, and begin generating revenue. All these factors, and in particular, expenditures on development 
of  projects  that  will  not  generate  significant  revenue  in  the  near  term,  can  contribute  to  fluctuations  in  our  quarterly 
financial performance and increase the likelihood that our operating results in a particular period will fall below investor 
expectations. 

Livestock waste and dairy farm projects have different economic models and risk profiles than landfill facilities, and 
we may not be able to achieve the operating results we expect from these projects. 

Livestock waste and dairy farm projects produce significantly less RNG and have higher operating costs than landfill 
facilities.  As  a  result,  these  projects  are  even  more  dependent  on  the  LCFS  credits  and,  to  a  lesser  extent,  RINs  for 
commercial viability. If CARB reduces the CI score that it applies to waste conversion projects, such as dairy digesters, 
the  number  of  LCFS  credits  for  RNG  generated  at  livestock  waste  and  dairy  farm  projects  will  decline.  Additionally, 
revenue from LCFS credits also depends on the price per LCFS credit, which is driven by various market forces, including 
the supply of and demand for LCFS credits, which in turn depends on the demand for traditional transportation fuel and 
the supply of renewable fuel from other renewable energy sources, and mandated CI targets, which determine the number 
of LCFS credits required to offset LCFS deficits. Fluctuations in the price of LCFS credits or the number of LCFS credits 
assigned will have a significantly greater effect on the success of livestock waste and dairy farm projects. A significant 
decline in the value of LCFS credits adversely affect our business, financial condition, and results of operations. 

We have a history of losses and may incur additional losses in the future. 

We incurred pre-tax losses in 2018, 2020 and 2021. During 2019, 2020 and 2021, our results were positively affected 
by $47.1 million, $19.8 million, and $20.7 million of AFTC revenue, respectively.  We may incur losses in future periods, 
and  we  may  never  sustain  profitability,  either  of  which  would  adversely  affect  our  business,  prospects  and  financial 
condition and may cause the price of our common stock to fall. Furthermore, historical losses may not be indicative of 
future losses due to the unpredictability of the COVID-19 pandemic, and our future losses may be greater than our past 
losses. In  addition,  to  try  to achieve or  sustain  profitability, we may choose or  be forced  to  take  actions  that result  in 
material costs or material asset or goodwill impairments. For instance, in the third and fourth quarters of 2017, we recorded 
significant charges in connection with our former fueling compressor manufacturing business (which we combined with 
another  company’s  fueling  compressor  manufacturing  business  in  the  CEC  Combination  (as  defined  in  Note  3  to  the 
Consolidated Financial  Statements)),  our  closure of  certain  fueling  stations, our determination  that certain  assets were 
impaired because of the foregoing, and other actions. We review our assets for impairment whenever events or changes in 
circumstances indicate that the carrying value of an asset or asset group may not be recoverable, and we perform a goodwill 
impairment test on an annual basis and between annual tests in certain circumstances, in each case in accordance with 
applicable  accounting  guidance  and  as  described  in  the  financial  statements  and  related  notes  included  in  this  report. 
Changes to the use of our assets, divestitures, changes to the structure of our business, significant negative industry or 
economic trends, disruptions to our operations, inability to effectively integrate any acquired businesses, further market 
capitalization  declines,  or  other  similar  actions  or  conditions  could  result  in  additional  asset  impairment  or  goodwill 
impairment charges or other adverse consequences, any of which could have material negative effects on our financial 
condition, our results of operations and the trading price of our common stock. 

21 

Our  plans  for  hydrogen  and  electric  vehicle  stations  will  require  significant  cash  investments  and  management 
resources and may not meet our expectations. 

As operators deploy hydrogen powered vehicles, we plan to modify our fueling stations to reform our RNG, build 
additional hydrogen stations, and deliver clean hydrogen.  Further, we have the capability to add electric charging at our 
sites, and we believe our RNG can be used to generate clean electricity to power vehicles.   

Our plans will require significant cash investments and management resources and may not meet our expectations 
with respect to additional sales of our vehicle fuels. We have experience constructing hydrogen fueling stations, but such 
facilities cost significantly more than traditional RNG vehicle fueling stations.  In addition, we have not yet added electric 
charging capability to any of our stations, and the cost of such capability may be significant.  We will need to ensure 
compliance  with  all  applicable  regulatory  requirements,  including  obtaining  any  required  permits  and  land  use  rights, 
which could take considerable time and expense and is subject to the risk that government support in certain areas may be 
discontinued.  If  we  are  unable  to  modify  our  stations  to  provide  hydrogen  or  add  electric  charging  to  our  stations,  or 
experience delays, our stations may be unable to meet our customer demand, which may negatively impact our business, 
prospects, financial condition, and operating results. 

Cummins, Daimler, Dana, Navistar, PACCAR, Toyota, Volvo, XOS, Tesla and Nikola have announced their plans to 
bring  long-haul Class  8  commercial  hydrogen-  and  battery-  powered  vehicles  to  the  market.    We  will,  however,  be 
dependent on these manufacturers to succeed in our target markets, and we will have no influence over their activities.  
See  the  risks  discussed  under  “We  are  dependent  on  the  production  of  vehicles  and  engines  in  our  key  customer  and 
geographic markets by vehicle and engine manufacturers, over which we have no control,” above and elsewhere in these 
risk factors.   

Increases, decreases and general volatility in oil, gasoline, diesel, natural gas and RNG prices could adversely affect 
our business. 

The  prices  of  RNG,  natural  gas,  crude  oil,  gasoline  and  diesel  can  be  volatile  and  this  volatility  may  continue  to 
increase. Factors that may cause volatility in the prices of RNG, natural gas, crude oil, gasoline and diesel include, among 
others,  changes  in  supply  and  availability  of  crude  oil,  RNG,  natural  gas,  government  regulations,  inventory  levels, 
consumer demand, price and availability of alternatives, weather conditions, negative publicity about crude oil or natural 
gas drilling, production or transportation techniques and methods, economic, health and political conditions, transportation 
costs and the price of foreign imports. If the prices of crude oil, gasoline and diesel are low or decline, or if the price of 
RNG  or  natural  gas  increases  without  corresponding  increases  in  the  prices  of  crude  oil,  gasoline  and  diesel  or 
Environmental Credits, then we may not be able to offer our customers an attractive price for our vehicle fuels, market 
adoption of our vehicle fuels could be slowed or limited and/or we may be forced to reduce the prices at which we sell our 
vehicle fuels in order to try to attract new customers or prevent the loss of demand from existing customers. Natural gas 
and crude oil prices are expected to remain volatile for the near future because of market uncertainties over supply and 
demand, including due to the state of the world economies, energy infrastructure and other factors. Fluctuations in natural 
gas prices affect the cost to us of the natural gas commodity. High natural gas prices adversely affect our operating margins 
when we cannot pass the increased costs through to our customers. Conversely, lower natural gas prices reduce our revenue 
when the commodity cost is passed through to our customers. 

Pricing conditions may also exacerbate the cost differential between vehicles that use our fuels and gasoline or diesel-
powered  vehicles,  which  may  lead  operators  to  delay  or  refrain  from  purchasing  or  converting  to  our  vehicle  fuels. 
Generally, vehicles that use our fuels cost more initially than gasoline or diesel-powered vehicles because the components 
needed for a vehicle to use our fuels add to the vehicle’s base cost. Operators then seek to recover the additional base cost 
over time through a lower cost to use our fuels. Operators may, however, perceive an inability to timely recover these 
additional initial costs if our vehicle fuels are not available at prices sufficiently lower than gasoline and diesel. Such an 
outcome could decrease our potential customer base and harm our business prospects. 

22 

We  face  increasing  competition from  competitors,  many  of  which  have  far  greater  resources,  experience,  customer 
bases and brand awareness than we have, and we may not be able to compete effectively with these businesses. 

The market for vehicle fuels is highly competitive. The biggest competition for our products is gasoline and diesel 
because most vehicles in our key markets are powered by these fuels. We also compete with suppliers of other alternative 
vehicle fuels, including renewable diesel, biodiesel, and ethanol, as well as producers and fuelers of alternative vehicles, 
including hybrid, electric and hydrogen-powered vehicles.  Additionally, our stations compete directly with other natural 
gas fueling stations and indirectly with electric vehicle charging stations and fueling stations for other vehicle fuels.  

Many businesses are in the market for RNG and other alternatives for use as vehicle fuel, including alternative vehicle 
and alternative fuel companies, refuse collectors, industrial gas companies, private equity groups, commodity traders, truck 
stop  and  fuel  station  owners,  fuel  providers,  gas  marketers,  utilities  and  their  affiliates  and  other  organizations.  If  the 
alternative vehicle fuel market grows, then the number and type of participants in this market and their level of capital and 
other commitments to alternative vehicle fuel programs could increase. Many of our competitors have substantially greater 
experience, customer bases, brand awareness and financial, marketing and other resources than we have. As a result, these 
competitors may be able to respond more quickly to changes in customer preferences, legal requirements or other industry 
or  regulatory  trends;  devote  greater  resources  to  the  development,  promotion  and  sale  of  their  products;  adopt  more 
aggressive pricing policies; dedicate more effort to infrastructure and systems development in support of their business or 
product development activities; implement more robust or creative initiatives to advance consumer acceptance of their 
products; or exert more influence on the regulatory landscape that affects the vehicle fuels market. 

We expect competition to increase in the vehicle fuels market generally. In addition, if the demand for alternative 
vehicle fuels, including RNG, increases, then we expect competition to also increase. Any such increased competition may 
reduce our customer base and revenue and may lead to increased pricing pressure, reduced operating margins and fewer 
expansion opportunities. 

NG Advantage may not be successful. 

NG  Advantage  provides  “virtual  pipelines”  to  transport  CNG  by  truck  from  compression  facilities  to  pipeline 
interconnects and to industrial and commercial customer users that do not have direct access to natural gas pipelines. NG 
Advantage  faces  unique  risks,  including  among  others:  (i)  it  has  a  history  of  net  losses  and  has  incurred  substantial 
indebtedness; (ii) NG Advantage will need to raise additional capital, which may not be available, may only be available 
on onerous terms, or may only be available from the Company; (iii) the labor market for truck drivers is very competitive, 
which increases NG Advantage’s difficulty in meeting its delivery obligations; (iv) NG Advantage often transports CNG 
in trailers over long distances and these trailers may be involved in accidents; and (v) NG Advantage’s CNG trailers may 
become subject to new or changed regulations that could adversely affect its business. If NG Advantage fails to manage 
any  of  these  risks,  our  business,  financial  condition,  liquidity,  results  of  operations,  prospects  and  reputation  may  be 
harmed.  In addition, we have been a significant source of financing for NG Advantage, consisting of loans of $18.4 million 
and $12.9 million in the years ended December 31, 2021 and 2020, respectively, and a $5.0 million equity investment in 
the year ended December 31, 2018. If NG Advantage is not able to obtain financing from external sources, we will need 
to provide additional debt or equity capital to allow NG Advantage to satisfy its commitments and maintain operations. 

Our station construction activities subject us to business and operational risks. 

As part of our business activities, we design and construct vehicle fueling stations that we either own and operate 
ourselves or sell to our customers. These activities require a significant amount of judgment in determining where to build 
and open fueling stations, including predictions about fuel demand that may not be accurate for any of the locations we 
target. As a result, we have built stations that we may not open for fueling operations, and we may open stations that fail 
to generate the volume or profitability levels we anticipate, either or both of which could occur due to a lack of sufficient 
customer demand at the station locations or for other reasons. For any stations that are completed but unopened, we would 
have substantial investments in assets that do not produce revenue, and for any stations that are open and underperforming, 
we may decide to close the stations. We determined to close a number of underperforming stations in the third and fourth 
quarters  of  2017  and  recorded  impairment  charges  in  connection  with  these  closures  and  other  related  actions.  As  of 
December 31, 2021, we had 30 nearly completed stations with a carrying amount of $54.2 million that were not open for 

23 

fueling operations. We expect to open these stations when we have sufficient customers to fuel at the locations, but we do 
not know when or if this will occur and some of these stations are subject to agreements that may expire prior to us being 
able to open such stations. Closure of these and/or any other stations could result in substantial additional costs and non-
cash asset impairments or other charges and could cause the price of our common stock to decline. 

We  also  face  many  operational  challenges  in  connection  with  our  station  design  and  construction  activities.  For 
example, we may not be able to identify suitable locations for the stations we or our customers seek to build. Additionally, 
even if preferred sites can be located, we may encounter land use or zoning difficulties, problems with utility services, 
challenges obtaining and retaining required permits and approvals or local resistance, including due to reduced operations 
of permitting agencies because of the ongoing COVID-19 pandemic, any of which could prevent us or our customers from 
building new stations on these sites or limit or restrict the use of new or existing stations. Any such difficulties, resistance 
or limitations or any failure to comply with local permit, land use or zoning requirements could restrict our activities or 
expose us to fines, reputational damage or other liabilities, which would harm our business and results of operations. In 
addition, we act as the general contractor and construction manager for new station construction and facility modification 
projects, and we typically rely on licensed subcontractors to perform the construction work. We may be liable for any 
damage we or our subcontractors cause or for injuries suffered by our employees or our subcontractors’ employees during 
the course of work on our projects. Additionally, shortages of skilled subcontractor labor could significantly delay a project 
or otherwise increase our costs. Further, our expected profit from a project is based in part on assumptions about the cost 
of the project, and cost overruns, delays or other execution issues may, in the case of projects we complete and sell to 
customers, result in our failure to achieve our expected margins or cover our costs, and in the case of projects we build 
and own, result in our failure to achieve an acceptable rate of return. If any of these events occur, our business, operating 
results and liquidity could be negatively affected. 

We have significant contracts with government entities, which are subject to unique risks. 

We have, and expect to continue to seek, long-term fueling station construction, maintenance and fuel sale contracts 
with  various  government  bodies,  which  accounted  for  21%,  22%,  and  31%  of  our  revenue  in  2019,  2020  and  2021, 
respectively. In addition to normal business risks, including the other risks discussed in these risk factors, our contracts 
with government entities are often subject to unique risks, some of which are beyond our control. For example, long-term 
government contracts and related orders are subject to cancellation if adequate appropriations for subsequent performance 
periods are not made. Further, the termination of funding for a government program supporting any of our government 
contracts or any other governmental action that results in reduced support for our government contracts could result in the 
loss of anticipated future revenue attributable to the contract. Moreover, government entities with which we contract are 
often able to modify, curtail or terminate contracts with us at their convenience and without prior notice, and would only 
be required to pay for work completed and commitments made at or prior to the time of termination. 

In addition, government contracts are frequently awarded only after competitive bidding processes, which are often 
protracted. In many cases, unsuccessful bidders for government contracts are provided the opportunity to formally protest 
the  contract  awards  through  various  agencies  or  other  administrative  and  judicial  channels.  The  protest  process  may 
substantially delay a successful bidder’s contract performance, result in cancellation of the contract award entirely and 
distract management. As a result, we may not be awarded contracts for which we bid, and substantial delays or cancellation 
of contracts may follow any successful bids as a result of any protests by other bidders. The occurrence of any of these 
risks would have a material adverse effect on our results of operations and financial condition. 

We may from time to time pursue acquisitions, divestitures, investments or other strategic relationships or transactions, 
which could fail to meet expectations or otherwise harm our business. 

We may acquire or invest in other companies or businesses or pursue other strategic transactions or relationships, such 
as joint ventures, collaborations, divestitures, or other similar arrangements. For example, in 2021 we created joint ventures 
with each of TotalEnergies and bp to develop and own dairy RNG production projects.  These strategic transactions and 
relationships and any others we may pursue in the future involve numerous risks, any of which could harm our business, 
performance and liquidity, including, among others, the following: (i) difficulties integrating the operations, personnel, 
contracts,  service  providers  and  technologies  of  an  acquired  company  or  partner;  (ii)  diversion  of  financial  and 
management resources from existing operations or alternative acquisition, investment, strategic or other opportunities; (iii) 

24 

failure  to  realize  the  anticipated  synergies  or  other  benefits  of  a  transaction  or  relationship;  (iv)  risks  of  entering  new 
customer  or  geographic  markets  in  which  we  may  have  limited  or  no  experience;  (v)  potential  loss  of  an  acquired 
company’s or partner’s key employees, customers or vendors in the event of an acquisition or investment, or potential loss 
of our assets (and their associated revenue streams), employees or customers in the event of a divestiture or other strategic 
transaction; and (vi) incurrence of substantial costs or debt or equity dilution to fund an acquisition, investment or other 
transaction or relationship, as well as possible write-offs or impairment charges relating to any businesses we partner with, 
invest in or acquire. 

Our partners may choose to invest in renewable or low carbon vehicle fuels other than RNG. 

Our partners, including TotalEnergies, bp and Chevron, may reallocate their resources from RNG to other renewable 
or low carbon vehicle fuels.  Any such action would have a material adverse effect on our plans, results of operations and 
financial condition. 

Our results of operations fluctuate significantly and are difficult to predict. 

Our results of operations have historically experienced, and may continue to experience, significant fluctuations as a 
result of a variety of factors, including, among others, the amount and timing of our vehicle fuel sales, Environmental 
Credit sales and recognition of government credits, station construction sales, grants and incentives, such as AFTC (for 
example, we recorded all of the AFTC revenue associated with our vehicle fuel sales made in 2017 during the first quarter 
of 2018, and we recorded all of the AFTC revenue associated with our vehicles fuel sales made in 2018 and 2019 in the 
fourth quarter of 2019); fluctuations in commodity, station construction and labor costs; variations in the fair value of 
certain of our derivative instruments that are recorded in revenue; sales of compressors and other equipment used in RNG 
production and at fueling stations; the amount and timing of our billing, collections and liability payments; and the other 
factors described in these risk factors. 

Our performance in certain periods has also been affected by transactions or events that have resulted in significant 
cash or non-cash gains or losses. For example, our results for 2017 were positively affected by gains related to repurchases 
or  retirements  of  our  outstanding  convertible  debt  at  a  discount  and  by  a  gain  related  to  bp,  but  were  also  negatively 
affected  by  significant  charges  in  connection  with  our  closure  of  certain  fueling  stations,  the  decreased  operating 
performance of our former fueling compressor manufacturing business, our determination of an impairment of assets as a 
result of the foregoing, and certain other actions. These or other similar gains or losses may not recur, in the same amounts 
or at all in future periods. 

These  significant  fluctuations  in  our  operating  results  may  render  period-to-period  comparisons  less  meaningful, 
especially  given  the  current  uncertainties  related  to  the  ongoing  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. 

Our warranty reserves may not adequately cover our warranty obligations, which could result in unexpected costs. 

We provide product warranties with varying terms and durations for the stations we build and sell, and we establish 
reserves for the estimated liability associated with these warranties. Our warranty reserves are based on historical trends 
and any specifically identified warranty issues known to us, and the amounts estimated for these reserves could differ 
materially from the warranty costs we may actually incur. We would be adversely affected by an increase in the rate or 
volume of warranty claims or the amounts involved in warranty claims, any of which could increase our costs beyond our 
established reserves and cause our cash position and financial condition to suffer. 

25 

Risks Related to Our Indebtedness and Other Capital Resources. 

We may need to raise additional capital to continue to fund our business, which could have negative effects and may 
not be available when needed, on acceptable terms or at all.  

We  require  capital  to  pay  for  capital  expenditures,  operating  expenses,  any  mergers,  acquisitions  or  strategic 
investments, transactions or relationships we may pursue, and to make principal and interest payments on our indebtedness. 
If we cannot fund any of these activities with capital on-hand or cash provided by our operations, we may seek to obtain 
additional capital from other sources, such as by selling assets or pursuing debt or equity financing. 

Asset sales and equity or debt financing may not be available when needed, on terms favorable to us or at all. Any 
sale of our assets to generate cash proceeds may limit our operational capacity and could limit or eliminate any revenue 
streams  or  business  plans  that  are  dependent  on  the  sold  assets.  Any  issuances  of  our  common  stock  or  securities 
convertible into our common stock to raise capital would dilute the ownership interest of our existing stockholders. Any 
debt financing we may pursue could require us to make significant interest or other payments and to pledge some or all of 
our assets as security. In addition, higher levels of indebtedness could increase our risk of non-repayment, adversely affect 
our creditworthiness, and amplify the other risks associated with our existing debt, which are discussed elsewhere in these 
risk  factors.  Further,  we  may  incur  substantial  costs  in  pursuing  any  capital-raising  transactions,  including  investment 
banking, legal and accounting fees. On the other hand, if we are unable to obtain capital in amounts sufficient to fund our 
obligations,  expenses,  and  strategic  initiatives,  we  could  be  forced  to  suspend,  delay  or  curtail  our  business  plans  or 
operating  activities  or  could  default  on  our  contractual  commitments.  Any  such  outcome  could  negatively  affect  our 
business, performance, liquidity, and prospects. 

We may not generate sufficient cash flow from our business to pay our debt.  

As  of  December  31,  2021,  we  have  consolidated  indebtedness  of  $39.3  million,  and  we  are  permitted  to  incur 
significant additional debt. Our outstanding and permitted indebtedness could make us more vulnerable to adverse changes 
in general U.S. and worldwide economic, regulatory, and competitive conditions, limit our flexibility to plan for or react 
to changes in our business or industry, place us at a disadvantage compared to our competitors that have less debt or limit 
our ability to borrow or otherwise raise additional capital as needed. 

Our payments of amounts owed under our various debt instruments will reduce our cash resources available for other 
purposes, including pursuing strategic initiatives, transactions or other opportunities, satisfying our other commitments 
and generally supporting our operations. Moreover, our ability to make these payments depends on our future performance, 
which is subject to economic, financial, competitive and other factors, including those described in these risk factors, and 
many of which are beyond our control. Our business may not generate sufficient cash from operations to service our debt. 

If  we  cannot  meet  our  debt  obligations  from  our  operating  cash  flows,  we  may  pursue  one  or  more  alternative 
measures.  Any  repayment  of  our  debt  with  equity,  however,  would  dilute  the  ownership  interests  of  our  existing 
stockholders.  Additionally,  because  the  agreements  governing  much  of  our  existing  indebtedness  contain  minimal 
restrictions on our ability to incur additional debt and do not require us to maintain financial ratios or specified levels of 
net worth or liquidity, we may seek capital from other sources to service our debt, such as selling assets, restructuring or 
refinancing  our  existing  debt  or  obtaining  additional  equity  or  debt  financing.  Our  ability  to  engage  in  any  of  these 
activities, if we decide to do so, would depend on the capital markets and the state of our industry, business and financial 
condition at the time, and could also subject us to significant risks, which are discussed elsewhere in these risk factors. 
Moreover, we may not be able to obtain any additional capital we may pursue on desirable terms, at a desirable time or at 
all. Any failure to pay our debts when due could result in a default on our debt obligations. In addition, certain of our debt 
agreements contain restrictive covenants, and any failure by us to comply with these covenants could also cause us to be 
in default under these agreements. 

In the event of any default on our debt obligations, the holders of the indebtedness could, among other things, declare 
all amounts owed immediately due and payable. Any such declaration could deplete all or a large portion of our available 
cash flow, and thereby reduce the amount of cash available to pursue our business plans or force us into bankruptcy or 
liquidation. 

26 

Risks Related to Environmental Health and Safety and Governmental and Environmental Regulations 

Our  business  is  influenced  by  environmental,  tax  and  other  government  regulations,  programs  and  incentives  that 
promote our vehicle fuels, and their modification or repeal could negatively affect our business. 

Our business is influenced by federal, state, and local tax credits, rebates, grants and other government programs and 
incentives that promote the use of our vehicle fuels. These include various government programs that make grant funds 
available from the purchase of vehicles and construction of fueling stations, as well as the AFTC under which we generate 
revenue for our vehicle fuel sales. The AFTC expired at the end of 2021. If the AFTC is not extended after 2021, the AFTC 
would not be available for vehicle fuel sales, and our revenue would be materially adversely affected. Additionally, our 
business  is  influenced  by  laws,  rules  and  regulations  that  require  reductions  in  carbon  emissions  and/or  the  use  of 
renewable fuels, such as the programs under which we generate Environmental Credits. 

These programs and regulations, which have the effect of encouraging the use of RNG as a vehicle fuel, could expire 
or be repealed or amended for a variety of reasons. For example, parties with an interest in gasoline and diesel, electric or 
other  alternative  vehicles  or  vehicle  fuels,  including  lawmakers,  regulators,  policymakers,  environmental  or  advocacy 
organizations, producers of alternative vehicles or vehicle fuels, or other powerful groups, may invest significant time and 
money in efforts to delay, repeal or otherwise negatively influence regulations and programs that promote RNG. Many of 
these parties have substantially greater resources and influence than we have. Further, changes in federal, state or local 
political, social or economic conditions, including a lack of legislative focus on these programs and regulations, could 
result in their modification, delayed adoption or repeal. Any failure to adopt, delay in implementing, expiration, repeal or 
modification of these programs and regulations, or the adoption of any programs or regulations that encourage the use of 
other  alternative  fuels  or  alternative  vehicles  over  RNG  (such  as  the  September  2020  Executive  Order  or  the  2021 
Executive  Order),  would  reduce  the  market  for  RNG  as  a  vehicle  fuel  and  harm  our  operating  results,  liquidity,  and 
financial condition.  

For instance, California lawmakers and regulators have implemented various measures designed to increase the use 
of electric, hydrogen and other zero-emission vehicles, including establishing firm goals for the number of these vehicles 
operating  on  state  roads  by  specified  dates  and  enacting  various  laws  and  other  programs  in  support  of  these  goals. 
Although the influence and applicability of these or similar measures on our business remains uncertain, a focus on “zero 
tailpipe emission” vehicles over vehicles with an overall net carbon negative emissions profile, but with some tailpipe 
emissions operating on RNG, would adversely affect the market for our fuels.   

To benefit from Environmental Credits, RNG projects are required to be registered and are subject to audit.  

RNG projects are required to register with the EPA and relevant state regulatory agencies. Further, we qualify our 
RINs through a voluntary Quality Assurance Plan, which typically takes from three to five months from first injection of 
RNG  into  the  commercial  pipeline  system.  Delays  in  obtaining  registration,  RIN  qualification,  and  any  LCFS  credit 
qualification of a new project could delay future revenues from a project and could adversely affect our cash flow. Further, 
we may make large investments in projects prior to receiving the regulatory approval and RIN qualification. By registering 
RNG projects with the EPA’s voluntary Quality Assurance Plan, we are subject to quarterly third-party audits and semi-
annual on-site visits  of  projects  to  validate  generated  RINs  and  overall  compliance  with  the  federal  renewable  fuel 
standard. We are also subject to a separate third party’s annual attestation review. The Quality Assurance Plan provides a 
process for RIN owners to follow, for an affirmative defense to civil liability, if used or transferred Quality Assurance 
Plan verified RINs were invalidly generated. A project’s failure to comply could result in remedial action by the EPA, 
including penalties, fines, retirement of RINs, or termination of the project’s registration, any of which could adversely 
affect our business, financial condition and results of operations. 

Our business could be negatively affected by federal or state laws, orders or regulations mandating new or additional 
limits on GHG emissions, “tailpipe” emissions or internal combustion engines.  

Federal or state laws, orders or regulations have been adopted, such as California’s AB 32 cap and trade law and the 
2021 Executive Order, and may in the future be adopted that impose limits on GHG emissions or otherwise require the 
adoption of zero-emission electric vehicles. The effects of GHG emission limits on our business are subject to significant 

27 

uncertainties based on, among other things, the timing of any requirements, the required levels of emission reductions, the 
nature  of  any  market-based or  tax-based mechanisms  adopted  to  facilitate  reductions,  the  relative  availability  of  GHG 
emission reduction offsets, the development of cost-effective, commercial-scale carbon capture and storage technology 
and supporting regulations and liability mitigation measures, the range of available compliance alternatives, and our ability 
to demonstrate that our vehicle fuels qualify as a compliance alternative under any statutory, regulatory, or standards-
based organization (such as WBCSD) programs to limit GHG emissions. If our vehicle fuels are not able to meet GHG 
emission  limits  or  perform  as  well  as  other  alternative  fuels  and  vehicles,  our  solutions  could  be  less  competitive. 
Furthermore, additional federal or state taxes could be implemented on “tailpipe” emissions, which would have a negative 
impact on the cost of our vehicle fuels, as compared to vehicle fuels that do not generate tailpipe emissions. See also the 
discussion above regarding the Advanced Clean Trucks regulation, the September 2020 Executive Order and the 2021 
Executive Order under “Our success is dependent on the willingness of fleets and other consumers to adopt our vehicle 
fuels, which may not occur in a timely manner, at expected levels or at all.” 

Our business is subject to a variety of government regulations, which may restrict our operations and result in costs 
and penalties or otherwise adversely affect our business and ability to compete. 

We are subject to a variety of federal, state and local laws and regulations relating to the environment, health and 
safety, labor and employment, building codes and construction, zoning and land use, the government procurement process, 
any political activities or lobbying in which we may engage, public reporting and taxation, among others. It is difficult and 
costly to manage the requirements of every authority having jurisdiction over our various activities and to comply with 
their varying standards. Many of these laws and regulations are complex, change frequently, may be unclear and difficult 
to interpret and have become more stringent over time. Any changes to existing regulations or adoption of new regulations 
may  result  in  significant  additional  expense  to  us  or  our  customers.  For  example,  in  June  2020,  California  passed  the 
Advanced  Clean  Trucks  regulation,  which  seeks  to  have  all  new  commercial  vehicles  sold  in  California  have  zero-
emissions by 2045, in September 2020, California’s Governor issued the September 2020 Executive Order, which seeks 
to  have  100%  of  medium-  and  heavy-duty  vehicles  in  California  be  zero  emission  by  2045,  and  in  December  2021, 
President Biden signed the 2021 Executive Order, which seeks to achieve 100% zero-emission vehicle acquisitions by the 
federal government by 2035. Further, from time to time, as part of the regular evaluation of our operations, including 
newly acquired or developing operations, we may be subject to compliance audits by regulatory authorities, which may 
distract management from our revenue-generating activities and involve significant costs and use of other resources. Also, 
we often need to obtain facility permits or licenses to address, among other things, storm water or wastewater discharges, 
waste handling and air emissions in connection with our operations, which may subject us to onerous or costly permitting 
conditions or delays if permits cannot be timely obtained.  Our failure to comply with any applicable laws and regulations 
could result in a variety of administrative, civil and criminal enforcement measures, including, among others, assessment 
of monetary penalties, imposition of corrective requirements or prohibition from providing services to government entities. 
If any of these enforcement measures were imposed on us, our business, financial condition, and performance could be 
negatively affected. 

We are subject to various environmental laws and regulations that could impose substantial costs upon us. 

Our operations are and will be subject to federal, state and local environmental laws and regulations, including laws 
relating to the use, handling, storage, disposal of and human exposure to hazardous materials. Moreover, we expect that 
we  will  be  affected  by  future  amendments  to  such  laws  or  other  new  environmental  and  health  and  safety  laws  and 
regulations  which  may  require  us  to  change  our  operations,  potentially  resulting  in  a  material  adverse  effect  on  our 
business,  prospects,  financial  condition,  and  operating  results.  These  laws  can  give  rise  to  liability  for  administrative 
oversight costs, cleanup costs, property damage, bodily injury, fines, and penalties. Capital and operating expenses needed 
to comply with environmental laws and regulations can be significant, and violations may result in substantial fines and 
penalties, third-party damages, suspension of production or a cessation of our operations. 

Contamination  at  properties  we  own  or  operate,  will  own  or  operate,  or  formerly  owned  or  operated  or  to  which 
hazardous substances were sent by us, may result in liability for us under environmental laws and regulations, including, 
but  not  limited  to,  the  Comprehensive  Environmental  Response,  Compensation  and  Liability  Act,  which  can  impose 
liability  for  the  full  amount  of  remediation-related costs  without  regard  to  fault,  for  the  investigation  and  cleanup  of 
contaminated  soil  and  ground  water,  for  impacts  to  human  health  and  for  damages  to  natural  resources.  The  costs  of 

28 

complying with environmental laws and regulations and any claims concerning noncompliance, or liability with respect 
to contamination in the future, could have a material adverse effect on our financial condition or operating results. We 
may  face  unexpected  delays  in  obtaining  the  required  permits  and  approvals  in  connection  with  our  planned  RNG 
production  facilities  that  could  require  significant  time  and  financial  resources  and  delay  our  ability  to  operate  these 
facilities, which would adversely impact our business, prospects, financial condition and operating results. 

Our operations entail inherent safety and environmental risks, which may result in substantial liability to us.  

Our operations entail inherent safety risks, including risks associated with equipment defects, malfunctions, failures, 
and misuses. For example, operation of LNG pumps requires special training because of the extremely low temperatures 
of LNG. Also, LNG tanker trailers and CNG fuel tanks and trailers could rupture if involved in accidents or improper 
maintenance  or  installation.  Further,  improper  refueling  of  vehicles  that  use  our  fuels  or  operation  of  vehicle  fueling 
stations could result in sudden releases of pressure that could cause explosions. In addition, our operations may result in 
the venting of methane, a potent GHG. These safety and environmental risks could result in uncontrollable flows of our 
fuels, fires, explosions, death, or serious injury, any of which may expose us to liability for personal injury, wrongful 
death, property damage, pollution and other environmental damage. We may incur substantial liability and costs if any 
such damages are not covered by insurance or are more than policy limits, or if environmental damage causes us to violate 
applicable GHG emissions or other environmental laws. Additionally, the occurrence of any of these events with respect 
to our fueling stations or our other operations could materially harm our business and reputation. Moreover, the occurrence 
of any of these events to any other organization in our vehicle fuel business could harm our industry generally by negatively 
affecting perceptions about, and adoption levels of, our vehicle fuels. 

Risks Related to Our Common Stock 

A  significant  portion  of  our  outstanding  common  stock  is  owned  or  otherwise  subject  to  acquisition  by  two 
equityholders, each of which may have interests that differ from the Company’s other stockholders and which now or 
in the future may be able to influence the Company’s corporate decisions, including a change of control. 

After giving effect to the issuance of the Amazon Warrant, TotalEnergies Marketing Services, SAS (“TMS”), a wholly 
owned subsidiary of TotalEnergies, owns 42,581,801 shares of our common stock, or 19.1% of our outstanding shares of 
common stock as of December 31, 2021 (excluding 7,930,508 shares of our common stock that are the subject of a voting 
agreement, dated May 9, 2018, among TMS, the Company and all of the Company’s directors and officers then in office); 
the  Amazon  Warrant  is  immediately  exercisable  by  Amazon  Holdings  for  shares  of  our  common  stock  representing 
4.999%  of  our  outstanding  common  stock.    Subject  to  vesting  of  the  Amazon  Warrant,  the  Amazon  Warrant  will  be 
exercisable for up to 19.999% of our outstanding common stock on a fully diluted basis (determined at the time of issuance 
of  the  Amazon  Warrant),  subject  to  certain  anti-dilution  provisions,  and  Amazon  Holding’s  beneficial  ownership  will 
initially  be  contractually  limited  to  the  Beneficial  Ownership  Limitation unless  Amazon  Holdings gives  the  Company 
sixty one (61) days’ notice that it is waiving such limitation. In addition, TotalEnergies was granted certain special rights 
that our other stockholders do not have in connection with its acquisition of this ownership position, including the right to 
designate two individuals to serve as directors of our Company and a third individual to serve as an observer on certain of 
our board committees.  

TotalEnergies  or  other  large  stockholders  may  be  able  to  influence  or  control  matters  requiring  approval  by  our 
stockholders, including the election of directors and mergers, acquisitions, or other extraordinary transactions. Amazon, 
through ownership by Amazon Holdings, could become a large stockholder if the Amazon Warrant were to vest further 
through  additional  fuel  purchases  from  the  Company  pursuant  to  the  Fuel  Agreement,  and  Amazon  Holdings  were  to 
exercise the Amazon Warrant to purchase vested Warrant Shares or Additional Warrant Shares and waive the Beneficial 
Ownership  Limitation.  Large  stockholders  may  have  interests  that  differ  from  other  stockholders  and  may  vote  or 
otherwise act in ways with which the Company or other stockholders disagree or that may be adverse to your interests. A 
concentration of stock ownership may also have the effect of delaying, preventing or deterring a change of control of our 
Company, which could deprive our stockholders of an opportunity to receive a premium for their shares of our common 
stock  as  part  of  a  sale  of  our  Company  and  could  affect  the  market  price  of  our  common  stock.  Conversely,  such  a 
concentration of stock ownership may facilitate a change of control under terms other stockholders may not find favorable 
or at a time when  other stockholders may prefer not to sell. 

29 

Sales of our common stock, or the perception that such sales may occur, could cause the market price of our stock to 
drop significantly, regardless of the state of our business. 

All outstanding shares of our common stock are eligible for sale in the public market, subject in certain cases to the 
requirements of Rule 144 under the Securities Act. Also, shares of our common stock that may be issued upon the exercise, 
vesting or conversion of our outstanding stock options and restricted stock units may be eligible for sale in the public 
market, to the extent permitted by Rule 144 and the provisions of the applicable stock option and restricted stock unit 
agreements or if such shares have been registered under the Securities Act.  

Sales of large amounts of our common stock by large stockholders, or the perception that such sales may occur, could 
cause the market price of our common stock to decline, regardless of the state of the Company’s business. Our common 
stock held by TMS and our common stock underlying the Amazon Warrant may be sold in the public market under Rule 
144 or in registered sales or offerings pursuant to registration rights held by each stockholder. For instance, we filed a 
registration statement with the SEC to cover the resale of the shares of our common stock issued and sold to TMS, which 
registration statement was declared effective in August 2018. If these shares are sold, or if it is perceived that they may be 
sold, in the public market, the trading price of our common stock could decline. For instance, in the year ended December 
31, 2021, TMS sold 8,274,495 shares of our common stock, which we believe caused downward pressure on the trading 
price of our common stock. 

General Risk Factors 

We rely on information technology in our operations, and any material failure, inadequacy, interruption, or security 
failure of that technology could harm our business.   

Increased global IT security threats and more sophisticated and targeted computer crime pose a risk to the security of 
our systems and networks and the confidentiality, availability and integrity of our data. There have been several recent, 
highly publicized cases in which organizations of various types and sizes have reported the unauthorized disclosure of 
customer or other confidential information, as well as cyber incidents involving the dissemination, theft and destruction 
of  corporate  information,  intellectual  property,  cash  or  other  valuable  assets.  There  have  also  been  several  highly 
publicized cases in which hackers have requested “ransom” payments in exchange for not disclosing customer or other 
confidential  information  or  for  not  disabling  the  target  company’s  computer  or  other  systems.  Implementing  security 
measures  designed  to  prevent,  detect,  mitigate  or  correct  these  or  other  IT  security  threats  involves  significant  costs. 
Although we have taken steps to protect the security of our information systems and the data maintained in those systems, 
we have, from time to time, experienced cyberattacks or other cyber incidents that have threatened our data and systems, 
including  malware  and  computer  virus  attacks  and  it  is  possible  that  future  cyber  incidents  we  may  experience  may 
materially  and  adversely  affect  our  business.  We  cannot  provide  assurance  that  our  safety  and  security  measures  will 
prevent our information systems from improper functioning or damage, or the improper access or disclosure of personally 
identifiable information such as in the event of cyber incidents. Any IT security threats that are successful against our 
security  measures  could,  depending  on  their  nature  and  scope,  lead  to  the  compromise  of  confidential  information, 
improper use of our systems and networks, manipulation and destruction of data, operational disruptions, and substantial 
financial outlays. Further, a cyber incident could occur and persist for an extended period of time without detection, and 
an  investigation  of  any  successful  cyber  incident  would  likely  require  significant  time,  costs  and  other  resources  to 
complete.  We  may  be  required  to  expend  significant  financial  resources  to  protect  against  or  to  remediate  such  cyber 
incidents. In addition, our technology infrastructure and information systems are vulnerable to damage or interruption from 
natural  disasters,  power  loss  and  telecommunications  failures.  Any  failure  to  maintain  proper  function,  security  and 
availability of our information systems and the data maintained in those systems could interrupt our operations, damage 
our reputation, subject us to liability claims or regulatory penalties, harm our business relationships or increase our security 
and  insurance  costs,  which  could  have  a  material  adverse  effect  on  our  business,  financial  condition  and  results  of 
operations. 

30 

The price of our common stock may continue to fluctuate significantly, and you could lose all or part of your investment. 

The market price of our common stock has experienced, and may continue to experience, significant volatility. Factors 
that may cause volatility in the price of our common stock, many of which are beyond our control, include, among others, 
the following: (i) the factors that may influence the adoption of our vehicle fuels, as discussed elsewhere in these risk 
factors; (ii) our ability to implement our business plans and initiatives and their anticipated, perceived or actual level of 
success;  (iii)  failure  to  meet  or  exceed  any  financial  guidance  we  have  provided  to  the  public  or  the  estimates  and 
projections  of  the  investment  community;  (iv)  the  market’s  perception  of  the  success  and  importance  of  any  of  our 
acquisitions, divestitures, investments or other strategic relationships or transactions; (v) the amount of and timing of sales 
of,  and  prices  for,  Environmental  Credits;  (vi)  actions  taken  by  state  or  federal  governments  to  mandate  or  otherwise 
promote or incentivize alternative vehicles or vehicle fuels over, or to the exclusion of, RNG; (vii) technical factors in the 
public trading market for our common stock that may produce price movements that may or may not comport with macro, 
industry or company-specific fundamentals, including, without limitation, the sentiment of retail investors (including as 
may be expressed on financial trading and other social media sites), the amount and status of short interest in our common 
stock, access to margin debt, and trading in options and other derivatives on our common stock; (viii) changes in political, 
regulatory, health, economic and market conditions; and (ix) a change in the trading volume of our common stock. 

In addition, the securities markets have from time-to-time experienced significant price and volume fluctuations that 
are unrelated to the operating performance of particular companies, but which have affected the market prices of these 
companies’ securities. These market fluctuations may also materially and adversely affect the market price of our common 
stock. 

Volatility or declines in the market price of our common stock could have other negative consequences, including, 
among others, further impairments to our assets (following the asset impairment charges we recorded in the third and 
fourth quarters of 2017 related to our former fueling compressor manufacturing business and our closure of certain fueling 
stations),  potential  impairments  to  our  goodwill  and  a  reduced  ability  to  use  our  common  stock  for  capital-raising, 
acquisitions or other purposes. The occurrence of any of these risks could materially and adversely affect our financial 
condition, results of operations and liquidity and could cause further declines in the market price of our common stock. 

Item 1B.   Unresolved Staff Comments. 

None. 

Item 2.   Properties. 

Our corporate headquarters are located at 4675 MacArthur Court, Suite 800, Newport Beach, California 92660, where 

we occupy approximately 48,000 square feet of office space. Our lease for this facility expires in June 2028. 

We  own  and  operate  the  Boron  Plant  in  Boron,  California,  approximately  125  miles  from  Los  Angeles.  In 

November 2006, we entered into a 30-year ground lease for the 36 acres on which this plant is situated. 

We own and operate the Pickens Plant located in Willis, Texas, approximately 50 miles north of Houston. We own 

approximately 24 acres of land on which this plant is situated, along with approximately 34 acres surrounding the plant. 

Item 3.   Legal Proceedings. 

From time to time, we may become involved in various legal proceedings that arise in the ordinary course of our 
business,  including  lawsuits,  claims,  audits,  government  enforcement  actions  and  related  matters.  It  is  not  possible  to 
predict when or if these proceedings may arise, nor is it possible to predict the outcome of any proceedings that do arise, 
including, among other things, the amount or timing of any liabilities we may incur, and any such proceedings could have 
a  material  effect  on  us  regardless  of  outcome.  In  the  opinion  of  management,  however,  we  are  not  a  party,  and  our 
properties are not subject, to any pending legal proceedings that are material to us. 

31 

Item 4.   Mine Safety Disclosures. 

None. 

32 

 
 
Item 5.   Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities. 

PART II 

Market Information 

Our common stock trades on The Nasdaq Global Select Market under the symbol “CLNE.” 

Holders 

There were approximately 49 holders of record of our common stock as of February 18, 2022. The actual number of 
holders of our common stock is greater than this number of record holders and includes stockholders who are beneficial 
owners, but whose shares are held in street name by brokers or held by other nominees. 

Issuer Purchases of Equity Securities 

On March 12, 2020, our Board of Directors approved a share repurchase program of up to $30.0 million (exclusive of 
fees and commissions) of our outstanding common stock (the “Repurchase Program”). On December 7, 2021, our Board 
of Directors approved an increase in the aggregate amount of our common stock to be repurchased 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, and may be suspended or discontinued at any time. As of December 31, 2021, approximately $32.6 
million remained available under the Repurchase Program. 

The  Repurchase  Program  does  not  obligate  us  to  acquire  any  specific  number  of  shares.  Repurchases  under  the 
Repurchase Program may be effected from time to time through open market purchases, privately negotiated transactions, 
structured or derivative transactions, including accelerated share repurchase transactions, or other methods of acquiring 
shares, in each case subject to market conditions, applicable securities laws and other relevant factors. Repurchases may 
also be made under plans set up pursuant to Rule 10b5-1 promulgated under the Exchange Act (“Rule 10b5-1 plans”). 

The  following  table  summarizes  the  Company’s  share  repurchase  activity  during  the  three  months  ended 

December 31, 2021 (in thousands, except share and per share amounts): 

  Total Number 

of Shares 
      Purchased 

  Approximate 
Dollar Value 
of Shares That 

  Total Number of   
  Shares Purchased   May Yet Be 
Purchased 
  as Part of Publicly  

Average 
Price Paid    Announced Plans   Under the Plans

     per Share (a)    

or Programs 

     or Program 

 —   $ 
 —   $ 
 452,700   $ 
 452,700   $ 

 —  
 —  
 6.42  
 6.42  

 —   $ 
 —  
 452,700  
 452,700   $ 

 15,508 
 15,508 
 32,601 
 32,601 

Period 
October 1, 2021 through October 31, 2021 
November 1, 2021 through November 30, 2021 
December 1, 2021 through December 31, 2021 

Total  

(a)  Exclusive of fees and commissions. 

Performance Graph 

This performance graph shall not be deemed “soliciting material” or “filed” with the SEC or subject to Regulation 
14A or 14C or to the liabilities of Section 18 of the Exchange Act, or incorporated by reference into any filing under the 
Securities Act or the Exchange Act, except to the extent that we specifically request that such information be treated as 
soliciting material or specifically incorporate it by reference into such a filing. The graph is required by applicable rules of 
the SEC and is not intended to forecast, predict or be indicative of the possible future performance of our common stock. 

33 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 
 
 
 
The following graph compares the five-year total return to holders of our common stock relative to the cumulative 
total returns of the Nasdaq Global Market Index and the Russell 2000 Index. The graph assumes that $100 was invested 
in our common stock and in each of these indices at the close of market on December 30, 2016 (the last trading day before 
the beginning of our fifth preceding fiscal year). We chose to include the Russell 2000 Index because it includes issuers 
with similar market capitalizations and due to the lack of a comparable industry or line-of-business index or peer group, 
as we are the only actively traded public company whose only line of business is to sell natural gas for use as a vehicle 
fuel and the associated equipment and services necessary to use natural gas as a vehicle fuel. 

460.00%

410.00%

360.00%

310.00%

260.00%

210.00%

160.00%

110.00%

60.00%

10.00%

-40.00%

-90.00%

Clean Energy Fuels Corp. (NasdaqGS:CLNE) - Share Pricing

Russell 2000 Index (^RUT) - Index Value

NASDAQ Composite Index (^COMP) - Index Value

Item 6.   [Reserved].  

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 2021 and 2020 items and year-to-year comparisons of 2021 
to 2020. Discussions of 2019 items and year-to-year comparisons of 2020 and 2019 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, 2020, filed with the SEC on March 9, 2021. 

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. 

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 delivered. Through our sales of RNG, which is derived from biogenic methane produced by the 

34 

 
 
 
 
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 gas 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  Oxides  of  Nitrogen,  or  NOx.  RNG  is  delivered  as  compressed  natural  gas  (“CNG”)  and  liquefied  natural  gas 
(“LNG”). 

As a clean energy solutions provider, we supply RNG and conventional natural gas, 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 
fueling stations in the United States and Canada; develop and own dairy 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; based on information from the American Trucking 
Association and our own internal estimates, we believe there are approximately 3.9 million Class 8 heavy-duty trucks 
operating in the U.S. that use over 40 billion gallons of diesel fuel per year. As of December 31, 2021, we deliver RNG to 
the transportation market through 548 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. 

Critically, to generate 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, 2021, we served over 1,000 fleet customers operating over 48,000 vehicles on 
our fuels. 

Longer term, we plan to provide hydrogen fuel to 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 

The COVID-19 pandemic has had an adverse impact on the volume of our sales, which we saw bottom in the second 
quarter of 2020. We have since seen improvement in volumes, with volumes delivered for the fourth quarter of 2021 9% 
higher compared to the fourth quarter of 2020, and 1% higher compared to the fourth quarter of 2019. We saw significant 
improvement in our volumes delivered in the public transit customer markets and airports (fleet services), which increased 
by 12% and 34%, respectively, during the three months ended December 31, 2021, compared to the prior year period. Our 
volume of GGEs delivered for the year ended December 31, 2021 increased 5% compared to the prior year. The increase 
in volumes delivered in the fourth quarter of 2021 and in fiscal year 2021 was primarily due to COVID-19 restrictions 
being lifted and an increase in travel generally. 

Although we are experiencing gradual improvements since the onset of the COVID-19 pandemic, there is no guarantee 
this  will  continue  due  to  uncertainties  regarding  the  continuance  of  the  COVID-19  pandemic.  It  is  possible  that  the 
prolonged effect of the COVID-19 pandemic could negatively affect our volumes. Lower volumes since the onset of the 
COVID-19 pandemic have resulted in and could again result in lower gross margin dollars and likely a lower gross margin 
per GGE due to lower output on fixed operating costs and the effect of less revenue from Environmental Credits. Lower 
volumes have affected and may again affect our federal alternative fuel excise tax credit (“AFTC”) revenue as this leads 
to  lower  AFTC-eligible  volumes.  Given  the  dynamic  nature  of  these  circumstances,  significant  uncertainty  exists 
concerning the duration of business disruption and the full extent of the effect of COVID-19 on our business, results of 
operations  and  financial  condition.  Additionally,  the  effects  of  COVID-19,  commodity  prices  and  the  adoption  of 

35 

government policies and programs, or increased popular sentiment, in favor of other vehicle technologies or fuels may 
delay adoption of natural gas vehicles, particularly heavy-duty natural gas trucks, by new or existing customers. For more 
information, see “Risk Factors” in Part I, Item 1A of this report. 

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 $229.2 million as of December 31, 2021 and $13.7 million of 
current debt. We expect to collect receivables relating to AFTC credits generated from fuel sales during 2021 in the first 
half  of  2022.  We  also  expect  AFTC  to  be  reinstated  during  2022  and  apply  retroactively  to  vehicle  fuel  sales  made 
beginning  January  1,  2022  and  we  anticipate  AFTC  revenue  to  be  approximately  $21.2  million  for  2022  after  giving 
consideration to the effect of COVID-19 described above. 

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: 

Revenue (in millions) 
Volume-related (1) (2) 
Station construction sales 
AFTC (3) 
Other 

Total  

Year Ended December 31,  
2020 

2019 

2021 

 273.6   $ 

 23.1  
 47.1  
 0.3  
 344.1   $ 

 245.3   $ 

 26.6  
 19.8  
 —  
 291.7   $ 

 218.5 
 16.4 
 20.7 
 — 
 255.6 

  $ 

  $ 

(1)  Our volume-related revenue primarily consists of sales of RNG and conventional natural gas, in the form of CNG and LNG, performance of O&M 
services, and sales of RINs and LCFS Credits in addition to changes in fair value of our derivative instruments. More information about our volume 
of fuel and O&M services delivered in the periods is included below under “Key Operating Data,” and more information about our derivative 
instruments, which consist of commodity swap and customer fueling contracts, is included in Note 7. Additionally, a discussion of volume-related 
revenue is included below under “Results of Operations.” The following table summarizes our volume-related revenue in the periods: 

Revenue (in millions) 
Fuel sales and performance of O&M services (2) 
Change in fair value of derivative instruments (a) 
RIN Credits 
LCFS Credits 

Total volume-related revenue 

Year Ended December 31,  
2020 

2019 

2021 

 248.8   $ 
 (6.6)  
 18.1   
 13.3   
 273.6   $ 

 209.2   $ 
 2.1   
 15.3   
 18.7   
 245.3   $ 

 173.5 
 (3.5)
 31.7 
 16.8 
 218.5 

  $ 

  $ 

a. 

The change in fair value of derivative instruments is related to the Company’s commodity swap and customer fueling contracts. 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 customer fueling contracts under the Company’s Zero Now truck financing program.  

(2) 

Includes $83.6 million of non-cash stock-based sales incentive contra-revenue charges related to the Amazon Warrant (as defined below) for the 
year ended December 31, 2021. 

(3)  Represents the federal alternative fuel tax credit, that we refer to as AFTC. AFTC was available for vehicle fuel sales made through December 31, 

2021. AFTC may not be reinstated for vehicle fuel sales made after December 31, 2021. 

Key Operating Data 

In  evaluating  our  operating  performance,  we  focus  primarily  on:  (1) the  amount  of  RNG,  CNG  and  LNG  GGEs 
delivered (which we define as (i) the volume of GGEs we sell to our customers as fuel, plus (ii) the volume of GGEs 

36 

 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
  
  
  
 
  
  
  
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
  
 
 
 
  
 
 
 
  
 
 
 
 
dispensed at facilities we do not own but where we provide O&M services on a per-gallon or fixed fee basis, plus (iii) our 
proportionate share of the GGEs sold as CNG by our joint venture with Mansfield Ventures, LLC and Mansfield Clean 
Energy  Partners,  LLC  (“MCEP”),  (2) our  station  construction  cost  of  sales,  (3) our  gross  margin  (which  we  define  as 
revenue minus cost of sales), and (4) net income (loss) attributable to us. The following tables present our key operating 
data for the years ended December 31, 2019, 2020 and 2021: 

GGEs delivered (in millions) 
CNG (1) 
LNG 

Total 

Year Ended 
December 31,  
2020 

 321.0  
 61.5  
 382.5  

2019 

 335.7  
 65.1  
 400.8  

2021 

 347.4 
 55.2 
 402.6 

RNG sold as vehicle fuel is included in the CNG or LNG amounts in the table above as applicable based on the form 
in which it was sold. GGEs of RNG sold as vehicle fuel for the years ended December 31, 2019, 2020 and 2021, were as 
follows: 

GGEs of RNG delivered (in millions) 
CNG 
LNG 
Total 

GGEs delivered (in millions) 
O&M services 
Fuel (1) 
Fuel and O&M services (2) 

Total 

Year Ended 
December 31,  
2020 

 124.4  
 28.9  
 153.3  

Year Ended 
December 31, 
2020 

 138.5  
 157.6     
 86.4     
 382.5     

2019 

 112.5  
 30.8  
 143.3  

2019 

 158.5  
 162.4     
 79.9     
 400.8     

2021 

 146.0 
 21.0 
 167.0 

2021 

 148.4 
 164.1 
 90.1 
 402.6 

RNG sold as vehicle fuel is included in the table above as applicable based on the services provided. GGEs of RNG 

sold as vehicle fuel for the years ended December 31, 2019, 2020 and 2021, were as follows: 

GGEs of RNG delivered (in millions) 
Fuel 
Fuel and O&M services (2) 

Total 

Other operating data (in millions) 
Station construction cost of sales 
Gross margin (3) (4) (5) 
Net income (loss) attributable to Clean Energy Fuels Corp. (3) (5) 

Year Ended 
December 31, 
2020 

 86.2   
 67.1   
 153.3   

Year Ended 
December 31, 
2020 

2019 

 87.3   
 56.0   
 143.3   

2019 

  $ 
   $ 
   $ 

 23.5    $ 
 132.0     $ 
 20.4     $ 

 24.0   $ 
 106.3    $ 
 (9.9)   $ 

2021 

 88.0 
 79.0 
 167.0 

2021 

 15.0 
 40.0 
 (93.1)

(1)  As noted above, amounts include our proportionate share of the GGEs sold as CNG by our joint venture with MCEP. GGEs sold by this joint 

venture were 0.4 million, 0.3 million, and 0.4 million for the years ended December 31, 2019, 2020 and 2021, respectively. 

(2)  Represents GGEs at stations where we provide both fuel and O&M services. 

(3) 

Includes $47.1 million, $19.8 million, and $20.7 million of AFTC revenue for the years ended December 31, 2019, 2020, and 2021, respectively. 

37 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
 
 
 
 
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
   
   
   
    
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
  
 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
(4)  Gross margin includes an unrealized gain (loss) from the change in fair value of commodity swap and customer fueling contracts of $(6.6) million, 
$2.1 million, and $(3.5) million for the years ended December 31, 2019, 2020 and 2021, respectively. See Note 7 for more information regarding 
the commodity swap and customer contracts. 

(5) 

Includes  $0.0  million,  $0.0  million,  and  $83.6  million  of  non-cash  stock-based  sales  incentive  contra-revenue  charges  related  to  the  Amazon 
Warrant (as defined below) for the years ended December 31, 2019, 2020 and 2021, respectively. 

2019 -2021 Developments 

TotalEnergies  Joint  Venture.  On  December  21,  2020,  we  announced  a  memorandum  of  understanding  with 
TotalEnergies S.E. (“TotalEnergies”) to create a joint venture to develop carbon negative RNG production facilities in the 
United States, as well as credit support to build additional downstream RNG infrastructure. TotalEnergies will provide 
$50.0 million, and we will provide $30.0 million for the proposed joint venture. TotalEnergies will also be providing credit 
support of $65.0 million to support our development in the RNG value chain, including $45.0 million for contracted RNG 
fueling infrastructure. 

On March 3, 2021, we entered an agreement (“TotalEnergies JV Agreement”) with TotalEnergies that created a 50/50 
joint venture (“TotalEnergies JV”) to develop anaerobic digester gas (“ADG”) RNG production facilities in the United 
States. Each ADG RNG production facility project under the TotalEnergies JV 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  (as  defined  below).  The  TotalEnergies  JV  Agreement  contemplates  that  the 
TotalEnergies JV will invest up to $400.0 million of equity in production projects, and TotalEnergies and the Company 
each committed to initially provide $50.0 million for the TotalEnergies JV (the “TotalEnergies JV Equity Obligations”). 
To fund our TotalEnergies JV Equity Obligations, we had the option to borrow $20.0 million from Société Générale, a 
company incorporated as a société anonyme under the laws of France (“SG”), pursuant to the SG Credit Agreement (as 
defined below). See Note 12 for additional information.  

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 have each committed to contribute $7.0 million to the DR JV. On November 1, 2021, we and TotalEnergies 
have each contributed 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 TotalEnergies JV Equity Obligations. Our ability to draw under the SG Credit Agreement ended 
on January 2, 2022. 

bp Joint Venture. On December 18, 2020, we entered a memorandum of understanding (“MOU”) with bp Products 
North America Inc. (“bp”). Pursuant to the MOU, we and bp intend to create a joint venture to develop, own, and operate 
RNG  production  facilities  at  dairies.  Contemporaneous  with  the  execution  of  the  MOU,  we  and  bp  executed  a  loan 
agreement whereby bp advanced $50.0 million (in the form of a loan) to fund capital costs and expenses incurred prior to 
formation  of  the  joint  venture.  We  expect  that  all  unpaid  principal  and  accrued  interest  outstanding  under  the  loan 
agreement will be contributed to the joint venture, provided that if the joint venture is not formed by April 30, 2022, we 
are obligated to repay the outstanding principal and accrued interest within five days of April 30, 2022. 

On April 13, 2021, we entered 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. Pursuant to the bp JV Agreement, 
we and bp have each 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 and consisted of all unpaid principal outstanding under the loan 
agreement dated December 18, 2020 (see Note 12), pursuant to which bp advanced us $50.0 million to fund capital costs 
and expenses incurred prior to formation of the bpJV, including capital costs and expenses for permitting, engineering, 
equipment, leases and feed stock rights. 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. 

38 

 
 
 
 
 
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 authorized 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  are  each  required  to  contribute  $71.6  million  to  the  bpJV.  As  of 
December 31, 2021, we and bp have contributed $20.0 million and $71.6 million, respectively, to the bpJV in connection 
with the bpJV Capital Call. The remaining contribution balance of $51.6 million due from us will be paid on or prior to 
June 30, 2022. As of December 31, 2021, we and bp each own 50% of the bpJV. 

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, 
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 trajectory. 

As a result of the immediate vesting of a portion of the Warrant Shares and Additional Warrant Shares, 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, 2021, Amazon Warrant Charges were $83.6 million, which included $76.6 million 
from the immediate vesting of a portion of the Warrant Shares and Additional Warrant Shares and $7.0 million associated 

39 

 
with fuel purchases. As of December 31, 2021, we had a customer incentive asset of $12.4 million and $22.1 million, 
classified  in  “Prepaid  expenses  and  other  current  assets”  and  “Notes  receivable  and  other  long-term  assets,  net,” 
respectively, in the accompanying consolidated balance sheets. 

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. 

Share Repurchase Program. On March 12, 2020, our Board of Directors approved 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.  As  of 
December 31, 2021, we had utilized $17.4 million under the Repurchase Program to purchase 8,197,086 shares of our 
common stock for a total cost of $17.6 million. 

Plains Credit Facility. On May 1, 2021, we entered into a Loan and Security Agreement (the “Plains LSA”) with 
PlainsCapital Bank (“Plains”) which provides us a $20.0 million revolving line of credit through May 1, 2022. The interest 
rate on amounts outstanding under the Plains LSA is the greater of the Prime Rate or 3.25%. As of December 31, 2021, 
no amounts were outstanding under the Plains LSA. 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 is valid until 
cancelled and is 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. As of December 31, 2021, no amounts have been drawn under the 
standby letter of credit. 

Chevron Adopt-a-Port. In June 2020, we entered into an agreement with Chevron Corp. (“Chevron”) to provide truck 
operators serving the ports of Los Angeles and Long Beach with cleaner, carbon negative RNG to reduce emissions. Under 
the agreement, Chevron will provide funding to allow truck operators to subsidize the cost of buying new RNG-powered 
trucks and will supply RNG to our stations near the ports. 

AFTC.  On  December  20,  2019,  the  AFTC  was  retroactively  extended  beginning  January  1,  2018  through 
December 31, 2020. As a result, AFTC revenue for vehicle fuel we sold in 2018 and 2019, which totaled $47.1 million, 
was recognized during the year ended December 31, 2019. AFTC revenue recognized during the year ended December 
31, 2020 totaled $19.8 million. The AFTC credit for 2018, 2019 and 2020 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  December  2020  AFTC  was 
extended for vehicle fuel sales made through December 31, 2021. We expect AFTC to be reinstated during 2022 and apply 
retroactively to vehicle fuel sales made beginning January 1, 2022. 

Zero  Now  Truck  Financing  Program.  We  launched  the  Zero  Now  truck  financing  program,  which  is  intended  to 
facilitate  and  increase  the  deployment  of  commercially  available  RNG  heavy-duty  trucks  in  the  United  States  and 
encourage  these  operators  to fuel  their  trucks  at our  stations.  The  Zero  Now  program  is  unique  and  complex,  and  has 
involved our entry into various arrangements in order to launch the program, including a term credit agreement for delayed 
draw  loans  of  up  to  $100.0  million,  which  we  could  draw  through  January  2,  2022;  a  credit  support  agreement  with 
THUSA, a wholly owned subsidiary of TotalEnergies, under which THUSA has guaranteed our obligations under the term 

40 

 
 
 
 
credit  agreement  in  exchange  for  a quarterly fee;  and  commodity  swap  arrangements with an  affiliate  of  THUSA  and 
TotalEnergies covering five million diesel gallons of natural gas fuel volume annually from April 2019 through June 2024, 
which are intended to manage diesel price fluctuation risks related to the natural gas fuel supply commitments we expect 
to  make  in  our  anticipated  fueling  agreements  with  fleet  operators  that  participate  in  the  Zero  Now  program.  See  the 
disclosure  under  “Key  Customer  Markets-Zero  Now”  in  Item 1.  “Business”  of  this  report  for  information  about  these 
agreements and the structure of the program. 

Debt Repurchase and Repayment. In May 2020, we repaid the remaining $50.0 million of 7.5% Notes and related 
accrued  and  unpaid  interest  thereon.  Upon  such  payment,  the  7.5%  Notes  were  paid  in  full.  See  Note 12  for  more 
information about our outstanding debt. 

NG  Advantage.  In  February  2020,  we  converted  the  principal  and  accrued  interest  under  the  November  2019 
Convertible  Note  (as  defined  in  Note  4)  into  common  units  of  NG  Advantage,  LLC  (“NG  Advantage”)  and  received 
common units pursuant to the guaranty agreement entered in February 2018, resulting in an increase in our controlling 
interest in NG Advantage to 93.3%. 

Debt Level and Debt Compliance 

As of December 31, 2021, we had total indebtedness, excluding finance lease obligations, of $36.1 million in principal 
amount, of which $12.9 million is expected to become due in 2022. 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, 2021, we were in compliance with all of these covenants. 

Key Trends 

Market for RNG, CNG and LNG as a Vehicle Fuel 

According  to  CARB,  RNG  and  conventional  natural  gas  are  cleaner  than  gasoline  and  diesel  fuel  based  on  the 
greenhouse gas 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 greenhouse gas 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. 

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

•  Volatile prices for oil, diesel and gasoline, which decreases the price advantage of our fuels. In addition, these 
pricing conditions have led us to reduce the prices we charge some customers for our fuels, which has reduced 
our profit margins. 

•  There has been increased focus by some parties, including lawmakers, regulators, policymakers, environmental 
and advocacy organizations and other powerful groups, on electric or other alternative vehicles or vehicle fuels. 
For  example,  the  2021  Executive  Order  directs  the  federal  government  to  achieve  certain  goals,  including 
achieving 100% zero-emission vehicle acquisitions by 2035. In addition, California lawmakers and regulators 

41 

have implemented various measures designed to increase the use of electric, hydrogen and other zero-emission 
vehicles, including establishing firm goals for the number of these vehicles operating on state roads by specified 
dates and enacting various laws and other programs in support of these goals. Among other things, we believe 
many California lawmakers and regulators desire to limit and ultimately discontinue the production and use of 
internal combustion engines because such engines have “tailpipe” emissions. 

•  We  believe  the  lack  of  substantial  growth  in  the  heavy-duty  trucking  market  has  been  driven  in  part  by  the 
experience of operators with, or perceptions of, unsatisfactory performance by prior models of heavy-duty natural 
gas truck engines, actual or perceived insufficiencies in the financial incentives to convert, and improvements in 
diesel engine technology. If these conditions continue, then the growth levels in this market will continue to be 
low. We believe the newest models of heavy-duty natural gas truck engines have substantially addressed concerns 
with prior models. Further, we have launched our Zero Now truck financing program and the Chevron Adopt-a-
Port program to combat operator concerns, but these programs may not ultimately be successful. 

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 greenhouse gas 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  revenue,  station  construction  sales,  and  AFTC 
revenue. 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 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  revenue. 
Furthermore, our volume-related revenue has been affected by the Amazon Warrant Charges resulting from immediate 
vesting of a portion of the Warrant Shares and Additional Warrant Shares 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. 

42 

These  significant  fluctuations  in  our  operating  results  may  render  period-to-period  comparisons  less  meaningful, 
especially  given  the  current  uncertainties  related  to  the  ongoing  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 2020 and 2021. 

Volume. The amount of RNG and conventional natural gas, in the form of CNG and LNG, that we delivered increased 
by  5.3%  from  2020  to  2021  primarily  due  to  the  effect  of  COVID-19  restrictions  being  lifted  and  increase  in  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  8.9%  from  2020  to  2021.  We  believe  the  increased  demand  for  RNG  is 
attributable to 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 climate change. To the extent demand for RNG continues to increase, 
we expect our TotalEnergies JV and our expanded supply agreement and bpJV could increase our volume-related 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 2021, market prices for RINs have been as high 
as $3.81 and as low as $1.95. 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 
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 

43 

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. 

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

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

We recognize fuel and O&M services 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 natural gas dispensed by the customer and current pricing conditions, 
which are typically billed to the customer 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. 

44 

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. 

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 is 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, which 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 
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 

45 

value-added taxes. We report the collection of these taxes on a net basis and they are excluded from revenue and cost of 
goods sold. 

Impairment of Goodwill and Long-Lived Assets 

Goodwill represents the excess of costs incurred over the fair value of the net assets of acquired businesses. We assess 
our goodwill using either a qualitative or quantitative approach to determine whether it is more likely than not that the fair 
value of our reporting unit is less than its carrying value. We are 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. We determined that we are a single 
reporting unit for the purpose of goodwill impairment tests. We perform the impairment test annually on October 1, or 
more frequently if facts or circumstances change that would indicate that the carrying amount may be impaired. 

The qualitative goodwill assessment includes the potential effect 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. 
Alternatively,  we  may  bypass  the  qualitative  assessment  for  a  reporting  unit  and  directly  perform  the  quantitative 
assessment. 

The quantitative assessment estimates the reporting unit's fair value based on its market capitalization 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. 

For our most recent goodwill impairment test, which was our annual test performed on October 1, 2021, we performed 
a quantitative impairment assessment for the reporting unit as described above. In this test, the fair value of the reporting 
unit substantially exceeded its carrying value. 

We  evaluated  the  volatility  in  the  market  price  of  our  common  stock  subsequent  to  our  annual  test  date  through 
December 31, 2021, and considered whether there were any other events or circumstances that would more likely than not 
reduce the fair value of our reporting unit below its carrying value on a sustained basis, and concluded it was not more 
likely than not that the fair value of our reporting unit decreased below its carrying value, on a sustained basis. As a result, 
an interim impairment test was not considered necessary during the three months ended December 31, 2021. 

If a significant decline in the market price of our common stock and our market capitalization were sustained, or if 
other events or circumstances change that would more likely than not reduce the fair value of our reporting unit below its 
carrying value, on a sustained basis, then we may perform impairment tests more frequently, and it is possible that our 
goodwill could become impaired, which could result in a material charge and adversely affect our results of operations. 

We review the carrying value of our 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. 

46 

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 to be sustained 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. 

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 and customer contracts, 

and warrants, all of which require significant judgment. 

Recently Adopted Accounting Changes and Recently Issued and Adopted Accounting Standards. 

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

Results of Operations 

The discussions below compare our results of operations in 2021 and 2020. Historical results are not indicative of the 

results to be expected in the current period or any future period. 

47 

2021 Compared to 2020 

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. 

Statements of Operations Data: 
Revenue: 

Product revenue 
Service revenue 
Total revenue 
Operating expenses: 

Cost of sales (exclusive of depreciation and amortization shown separately below): 

Product cost of sales 
Service cost of sales 

  Change in fair value of derivative warrants 
  Selling, general and administrative 
  Depreciation and amortization 
Total operating expenses 
Operating loss 

Interest expense 
Interest income 
Other income, net 
Loss from equity method investments 
Gain from sale of certain assets of subsidiary 
Gain (loss) from formation of equity method investment 

Loss before income taxes 

Income tax expense 

Net loss 

Loss attributable to noncontrolling interest 

Net loss attributable to Clean Energy Fuels Corp. 

Year Ended  
December 31,  

2020 

2021 

 86.4 %   
 13.6   
 100.0   

 83.4 % 
 16.6  
 100.0  

 55.4   
 8.1   
 —   
 23.5   
 16.3   
 103.3   
 (3.4)  
 (2.5)  
 0.5   
 1.0   
 (0.1)  
 0.4   
 0.2   
 (3.9)  
 (0.1)  
 (4.0)  
 0.6   
 (3.4)%   

 74.2  
 10.2  
 —  
 35.2  
 17.7  
 137.3  
 (37.2) 
 (1.7) 
 0.4  
 0.4  
 (0.2) 
 1.5  
 —  
 (36.8) 
 —  
 (36.8) 
 0.4  
 (36.4)% 

Revenue.     Revenue  decreased  by  $36.1  million to  $255.6  million for  2021,  from  $291.7  million  for  2020.  This 
decrease was primarily due to the Amazon Warrant Charges of $83.6 million, an unrealized loss from the change in fair 
value  of  our  commodity  swap  and  customer  contracts  entered  into  in  connection  with  our  Zero  Now  truck  financing 
program and a decrease in station construction sales, partially offset by an increase in volume-related revenue. 

Volume-related  revenue,  excluding  the  effect  of  the  change  in  fair  value  of  our  commodity  swap  and  customer 
contracts  entered  into  in  connection  with  our  Zero  Now  truck  financing  program  and  the  Amazon  Warrant  Charges, 
increased by $62.5 million between periods, attributable to an increase in gallons delivered and a higher effective price 
per gallon delivered. The effect to volume-related revenue as a result of the change in fair value of our commodity swap 
and customer contracts entered into in connection with our Zero Now truck financing program was $5.6 million, as we 
recognized an unrealized gain of $2.1 million in 2020 compared to an unrealized loss of $3.5 million in 2021 (see Note 7 
for more information). 

Our effective price per gallon increased by $0.12 per gallon to $0.76 per gallon in 2021 compared to $0.64 in 2020, 
excluding the effects of the change in fair value of derivative instruments and Amazon Warrant Charges discussed above. 
Our effective price per gallon is defined as revenue generated from selling RNG and conventional natural gas and any 
related Environmental Credits and providing O&M services to our vehicle fleet customers at stations we do not own and 
for  which  we  receive  a  per-gallon  or  fixed  fee,  all  divided  by  the  total  GGEs  delivered  less  GGEs  delivered  by  non-
consolidated entities, such as entities that are accounted for under the equity method. The increase in our effective price 

48 

 
 
 
 
 
 
 
 
  
 
 
 
  
     
     
  
  
    
   
  
    
   
  
  
  
  
    
   
  
    
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
per gallon was primarily due to higher RIN and natural gas prices, and a favorable fuel price mix, which is based on the 
variation of fuel types and locations where we deliver fuel. 

Station construction sales decreased by $10.2 million between periods due to decreased construction activities as a 

result of construction delays relating to completion of certain projects. 

AFTC revenue increased by $0.9 million between periods primarily due to the increase in gallons sold during the year 

ended December 31, 2021 compared to the year ended December 31, 2020. 

Cost of sales.    Cost of sales increased by $30.2 million to $215.6 million in 2021, from $185.4 million in 2020. This 
increase was primarily due to an increase in gallons delivered and an increase in our effective cost per gallon delivered, 
partially offset by a decrease in the cost of station construction activities. 

Our effective cost per gallon increased by $0.08 per gallon to $0.50 per gallon in 2021 from $0.42 per gallon in 2020. 
Our effective cost per gallon is defined as the total costs associated with delivering our fuels, including commodity costs, 
transportation fees, liquefaction charges, and other site operating costs, plus the total cost of providing O&M services at 
stations that we do not own and for which we receive a per-gallon or fixed fee, including direct technician labor, indirect 
supervisor and management labor, repair parts and other direct maintenance costs, all divided by the total GGEs delivered 
less GGEs delivered by non-consolidated entities, such as entities that are accounted for under the equity method. The 
increase in our effective cost per gallon was due to higher commodity prices and transportation costs. 

Selling, general and administrative.    Selling, general and administrative expenses increased by $21.4 million to $89.9 
million in 2021, from $68.5 million in 2020. The increase was primarily driven by an increase of $12.0 million in stock-
based compensation expense due to equity awards granted during the year and our higher stock price, an increase of $2.9 
million in salaries and benefits, and an increase of $2.0 million in legal and consulting fees. 

Depreciation and amortization.    Depreciation and amortization decreased by $2.5 million to $45.2 million in 2021, 

from $47.7 million in 2020, primarily due to a lower amount of depreciable assets. 

Interest expense.    Interest expense decreased by $2.9 million to $4.4 million in 2021, from $7.3 million in 2020. This 
decrease  was  primarily  due  to  a  reduction  of  outstanding  indebtedness  between  periods  and  a  $1.2  million  loss  on 
extinguishment of debt in 2020 that is included in interest expense. 

Other income, net.    Other income, net decreased by $2.1 million to $0.9 million in 2021, from $3.0 million in 2020, 

primarily due to higher gains recorded for the disposal of certain assets in the prior year period. 

Loss  from  equity  method  investments.        Loss  from  equity  method  investments  increased  by  $0.2  million  to  $0.4  
million in 2021, from $0.2 million in 2020, primarily due to the operating results of SAFE&CEC S.r.l., the bpJV, and the 
TotalEnergies JV. 

Gain from sale of certain assets of subsidiary.   In 2021, we recorded a gain of $3.9 million compared to a gain of 
$1.1 million in 2020 as a result of the satisfaction of specified performance criteria in each of 2020 and 2021 related to the 
assets sold in the bp Transaction in accordance with the related Amended Asset Purchase Agreement. 

Gain from formation of equity method investment.    In 2020, we recorded a gain of $0.7 million related to the release 
of costs accrued in satisfaction of commitments made in connection with the CEC Combination (defined in Note 3). There 
was no comparable gain or loss in 2021. 

Income tax expense.    Income tax expense decreased by $0.2 million to $0.1 million in 2021 from $0.3 million in 
2020, primarily due to a decrease in deferred taxes associated with goodwill and a reduction in the Company’s expected 
foreign tax exposure. 

49 

Loss attributable to noncontrolling interest.    In 2021 and 2020, we recorded a gain of $1.0 million and $1.7 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 2021 and 2020 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 delivered 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. 

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, which could be influenced by the discontinuance 
of LIBOR for certain of our debt instruments that tie interest rates to this metric; 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 effects of COVID-19, 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, as 
discussed under “Key Trends-Our Performance” above. 

Cash Flows 

Operating Activities. Cash provided by operating activities was $41.3 million in 2021, compared to cash provided by 
operating  activities  of  $61.0  million  in  2020.  The  decrease  in  cash  provided  by  operating  activities  was  primarily 
attributable to the collection of AFTC receivables related to 2018 and 2019 volumes in 2020. 

Investing  Activities.  Cash  used  in  investing  activities  was  $207.7  million  in  2021,  compared  to  cash  provided  by 
investing activities of $24.2 million in 2020. The increase in cash used in investing activities was primarily attributable to 
$100.2 million in net purchases of short-term investments in 2021, compared to $27.6 million in net maturities of short-
term investments in 2020, a $15.6 million increase in capital expenditures in 2021, higher investments in other entities in 
2021,  including  our  $70.2  million  in  contribution  to  the bpJV,  a  $1.7 million  decrease  in  proceeds from property  and 
equipment disposals, and $3.9 million in lower net earn-out proceeds received in connection with the bp Transaction. 

Financing Activities. Cash provided by financing activities was $152.8 million in 2021, compared to cash used in 
financing activities of $18.7 million in 2020. Cash provided by financing activities in 2021 was primarily attributable to 
approximately $193.5 million net proceeds from the issuance of common stock under our ATM Programs, proceeds from 
the Chevron Adopt-a-Port program, and proceeds from debt instruments, partially offset by repurchases of common stock 
and repayments of debt instruments and finance lease obligations. Cash used in financing activities in 2020 was primarily 

50 

attributable to repayments of debt instruments and finance lease obligations and repurchases of common stock, partially 
offset by proceeds received from debt instruments. 

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 $70.9 million in capital expenditures in 2022. 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 2022, we anticipate 
deploying up to approximately $195.0 million to develop ADG RNG production facilities. In 2021, we contributed $70.2 
million and $4.8 million to the bpJV and the DR JV, respectively. 

In addition, NG Advantage may spend up to $0.6 million in 2022 to purchase additional equipment in support of its 
operations  and  customer  contracts.  Although  NG  Advantage  has  sought  financing  from  third  parties  for  capital 
expenditures, we have provided and may continue to provide financing for these capital expenditures. 

We  had  total  indebtedness,  consisting of our debt  and  finance  leases, of  approximately  $39.4  million  in  principal 
amount as of December 31, 2021, of which approximately $13.7 million, $10.0 million, $5.6 million, $1.8 million, and 
$8.3 million is expected to become due in 2022, 2023, 2024, 2025, and 2026, respectively. Based on outstanding debt 
balances and applicable interest rates as of December 31, 2021, we expect our total interest payment obligations relating 
to our indebtedness to be $2.1 million for the year ending December 31, 2022. 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 
$68.2 million as of December 31, 2021, of which approximately $6.1 million, $6.0 million, $6.1 million, $6.0 million, 
$5.8 million and $38.0 million is expected to become due in 2022, 2023, 2024, 2025, 2026 and thereafter, respectively. 

In addition, in connection with implementing our Zero Now truck financing program, we have entered into agreements 
that permit us to incur a material amount of additional debt on a delayed draw basis and obligate us to make interest and 
other fee payments that vary in amount depending on the outstanding principal of this debt and certain other factors; none 
of this potential debt nor the related interest and other payments are included in the foregoing estimates, other than the 
principal  amount  of  $9.5  million  drawn  as  of  December  31,  2021.  Our  ability  to  draw  additional  debt  under  these 
agreements expired on January 2, 2022. 

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, 

51 

and sales of assets. As of December 31, 2021, we had total cash and cash equivalents and short-term investments of $229.2 
million, compared to $138.5 million as of December 31, 2020. 

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  effects  of  COVID-19,  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  effects  of  COVID-19,  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 
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 as of December 31, 2021. 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 

Contractual Obligations: (in thousands) 
Long-term debt (1) 
Finance lease obligations (2) 
Operating lease commitments (3) 
Long-term take-or-pay contracts (4) 
Long-term supply contract (5) 
Construction contracts (6) 
JV capital contribution commitments (7) 

Total 

  $ 

Total 
 40,884   $ 
 3,578  
 68,173  
 2,565  
 1,141  
 25,433  
 51,600  

Less than 
1 year 
 14,842   $ 
 990  
 6,148  
 1,340  
 1,141  
 25,433  
 51,600  

      1 - 3 years        3 - 5 years 

  More than 

 15,844   $ 

 2,198  
 12,124  
 1,225  
 —  
 —  

 10,198   $ 
 390  
 11,868  
 —  
 —  
 —  

5 years 

 — 
 — 
 38,033 
 — 
 — 
 — 

  $  193,374   $  101,494   $ 

 31,391   $ 

 22,456   $ 

 38,033 

(1)  Consists of long-term debt to finance acquisitions and equipment purchases, including future interest payments. For our variable-rate debt (which 
consists of the SG Facility, as defined in Note 12), we have assumed an interest rate of 1.4% (LIBOR plus 1.30%) as of December 31, 2021. 

52 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
 
 
  
  
  
 
  
  
 
 
 
 
  
  
  
  
  
 
  
  
  
  
  
 
  
  
  
  
  
 
 
 
 
 
 
 
 
 
(2)  Consists of finance lease obligations to finance equipment purchases, including future interest payments. 

(3)  Consists of various space and ground leases for our Boron Plant, office spaces and fueling stations as well as leases for equipment. 

(4)  Represents our estimates for long-term and quarterly natural gas purchase contracts with a take-or-pay commitment. 

(5)  Represents our estimates for one long-term natural gas supply contract for our subsidiary NG Advantage, which entered into an arrangement with 

bp for the supply, sale and transportation of CNG through February 2022. 

(6)  Consists of our obligations to fund various fueling station construction projects, net of amounts funded through December 31, 2021 and excluding 

contractual commitments related to station sales contracts. 

(7)  Represents outstanding commitments for the bpJV pursuant to the bpJV Capital Call (see Note 15). 

Off-Balance Sheet Arrangements 

As of December 31, 2021, 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: 

•  Outstanding surety bonds for construction contracts and general corporate purposes totaling $43.4 million; 

•  One long-term natural gas purchase contract with a take-or-pay commitment, the amount of which is shown under 

“Contractual Obligations” above; 

•  Quarterly fixed price natural gas purchase contracts with take-or-pay commitments, the amount of which is shown 

under “Contractual Obligations” above; 

•  One long-term natural gas sale contract with a fixed supply commitment, the amount of which is shown under 

“Contractual Obligations” above, along with a guaranty agreement; and 

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

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. 

As of December 31, 2021, we had one long-term natural gas purchase contract with a take-or-pay commitment, which 
requires us to purchase minimum volumes of natural gas at index-based prices and expires in June 2022. Additionally, as 
of  December  31,  2021,  we  had  quarterly  fixed-price  natural  gas  purchase  contracts  with  take-or-pay  commitments 
extending through June 2023. 

NG Advantage has entered into an arrangement with bp for the supply, sale and reservation of a specified volume of 
CNG transportation capacity until February 2022. In connection with the arrangement, on February 28, 2018, we entered 
into a guaranty agreement with NG Advantage and bp, which was amended in June 2020, in which we guarantee NG 
Advantage’s payment obligations to the customer in the event of a default by NG Advantage under the supply arrangement, 
in an amount up to $15.0 million plus related fees. Our guaranty is in effect until thirty days following our notice to bp of 
termination. 

In addition, as of December 31, 2021, we have a fixed supply arrangement with UPS for the supply and sale of 170.0 

million GGEs of RNG through March 2026. 

53 

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 $94.0 million, $74.6 million, and $111.8 million of our cost of sales in 2019, 2020, and 

2021, 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 in connection with the natural gas fuel supply commitments we make 
in our fueling agreements with fleet operators that 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, 2021, we would expect a 
corresponding fluctuation in the fair value of our commodity swap contracts of approximately $2.5 million. 

Foreign Currency Exchange Rate Risk 

For the year ended December 31, 2021, our primary exposure to foreign currency exchange rates relates to our other 
Canadian operations that had certain outstanding accounts receivable and accounts payable denominated in the U.S. dollar, 
which were not hedged. 

We  have  prepared  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, 2021, we would expect a corresponding fluctuation in the value of the assets and 
liabilities of approximately $0.2 million, net. 

Interest Rate Risk 

As of December 31, 2021, we had $9.5 million of debt that bears interest at a rate equal to LIBOR or the Prime Rate 
plus a margin per annum. Thus, our interest expense would fluctuate with a change in LIBOR or the Prime Rate. If these 
rates  were  to  increase  or  decrease  by  1%  for  the  year,  our  annual  interest  expense  would  increase  or  decrease  by 
approximately $0.1 million. 

The SG Credit Agreement permits us to draw loans from time to time through January 2, 2022. These loans are subject 
to  an  interest  rate  indexed  to  LIBOR,  certain  tenors  of  which  were  discontinued  after  2021  with  other  tenors  being 
discontinued after June 2023. We intend to monitor the developments with respect to the discontinuance of LIBOR and 
work with our lenders under the credit agreements, including SG, and any other indebtedness with an interest rate tied to 
LIBOR 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 impact our interest expense, results of operations and cash flows. 

54 

 
 
Item 8.   Financial Statements and Supplementary Data. 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Consolidated Financial Statements 

Report of Independent Registered Public Accounting Firm (PCAOB ID 185) 
Consolidated Balance Sheets 
Consolidated Statements of Operations 
Consolidated Statements of Comprehensive Income (Loss) 
Consolidated Statements of Stockholders’ Equity 
Consolidated Statements of Cash Flows 
Notes to Consolidated Financial Statements 

Financial Statement Schedule 

Schedule II—Valuation and Qualifying Accounts 

Page 

56
59
60
61
62
63
64

112

55 

  
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm 

To the Stockholders and Board of Directors 
Clean Energy Fuels Corp.: 

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting 

We  have  audited  the  accompanying  consolidated  balance  sheets  of  Clean  Energy  Fuels  Corp. and  subsidiaries  (the 
Company) as of December 31, 2021 and 2020, the related consolidated statements of operations, comprehensive income 
(loss), stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2021, and 
the related notes and financial statement schedule II (collectively, the consolidated financial statements). We also have 
audited the Company’s internal control over financial reporting as of December 31, 2021, 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 consolidated financial statements referred to above present fairly, in all material respects, the financial 
position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for each 
of the years in the three-year period ended December 31, 2021, in conformity with U.S. generally accepted accounting 
principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial 
reporting as of December 31, 2021 based on criteria established in Internal Control – Integrated Framework (2013) issued 
by the Committee of Sponsoring Organizations of the Treadway Commission. 

Basis for Opinions 

The Company’s management is responsible for these consolidated financial statements, 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  consolidated  financial  statements  and  an  opinion  on  the  Company’s  internal 
control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company 
Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company 
in accordance with 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 audits to obtain reasonable assurance about whether the consolidated financial statements are free of material 
misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained 
in all material respects. 

Our  audits  of  the  consolidated  financial  statements  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. 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  audits  also  included  performing  such  other 
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our 
opinions. 

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 

56 

 
 
 
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. 

Critical Audit Matter 

The  critical  audit  matters  communicated  below  are  matters  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 critical audit matters 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 
matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they 
relate. 

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,  2021,  the  Company  recorded  derivative  assets  and  liabilities  related  to  the  embedded  derivatives  and 
commodity  swaps  of  $6,939  thousand  and  $4,383  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. 

Evaluation of the Company’s accounting analysis associated with the Amazon Warrant 

As discussed in Notes 1 and 13 to the consolidated financial statements, the Company entered into an agreement with 
certain subsidiaries of Amazon.com, Inc. (Amazon). Pursuant to the agreement, Amazon agreed to purchase a minimum 
volume of fuel over a contractual period, and, in exchange, the Company issued warrants to Amazon to purchase shares 
of common stock of the Company. Certain of these warrants vested upon consummation of the agreement, which resulted 

57 

 
 
 
in the Company recognizing an initial charge against revenue of $76.6 million and a customer incentive asset of $38.4 
million. The customer incentive asset will be recognized as a charge against revenue as the contractually required minimum 
fuel is purchased. 

We  identified  the  evaluation  of  the  Company’s  accounting  for  the  warrants  that  immediately  vested  when  issued  to 
Amazon as a critical audit matter. Complex auditor judgment was required in evaluating the provisions of the agreements 
and the application of the relevant accounting guidance to the provisions of the agreements. 

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and 
tested the operating effectiveness of the internal control related to the Company’s evaluation of the accounting for the 
warrants  issued  to  Amazon  and  the  application  of  relevant  accounting  guidance.  We  inquired  of  management  on  the 
business purpose of the transaction. We evaluated the Company’s assessment of the presentation of the warrant expense 
as a charge against revenue and the determination of equity classification. We also assessed the timing of the recognition 
of  customer  incentive  asset  over  the  minimum  volume  of  contractual  fuel  by  reading  the  underlying  agreement  to 
understand  the  relevant  terms  and  conditions  of  the  agreement  as  well  as  the  rights  and  features  of  the  warrants.  We 
determined whether the Company’s assessment of the contractual terms and conditions was in accordance with the relevant 
accounting standards. 

/s/ KPMG LLP 

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

Irvine, California 
February 24, 2022 

58 

 
  
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

CONSOLIDATED BALANCE SHEETS 
(In thousands, except share and per share data) 

December 31,    
2020 

December 31,  
2021 

Current assets: 

Assets 

Cash and cash equivalents 
Short-term investments 
Accounts receivable, net of allowance of $1,335 and $1,205 as of December 31, 2020 and 2021, 
respectively 
Other receivables 
Inventory 
Prepaid expenses and other current assets 
Derivative assets, related party 

Total current assets 

Operating lease right-of-use assets 
Land, property and equipment, net 
Restricted cash 
Notes receivable and other long-term assets, net 
Long-term portion of derivative assets, related party 
Investments in other entities 
Goodwill 
Intangible assets, net 
Total assets 

Liabilities and Stockholders' Equity 

Current liabilities: 

Current portion of debt 
Current portion of finance lease obligations 
Current portion of operating lease obligations 
Accounts payable 
Accrued liabilities 
Deferred revenue 
Derivative liabilities, related party 

Total current liabilities 
Long-term portion of debt 
Long-term portion of finance lease obligations 
Long-term portion of operating lease obligations 
Long-term portion of derivative liabilities, related party 
Other long-term liabilities 

Total liabilities 

Commitments and contingencies (Note 17) 
Stockholders’ equity: 

Preferred stock, $0.0001 par value. 1,000,000 shares authorized; no shares issued and outstanding 
Common stock, $0.0001 par value. 304,000,000 and 454,000,000 shares authorized; 198,491,204 shares 
and 222,684,923 shares issued and outstanding as of December 31, 2020 and 2021, respectively 
Additional paid-in capital 
Accumulated deficit 
Accumulated other comprehensive loss 

Total Clean Energy Fuels Corp. stockholders’ equity 

Noncontrolling interest in subsidiary 

Total stockholders’ equity 
Total liabilities and stockholders’ equity 

$ 

$ 

$ 

$ 

 108,977  
 29,528  

$ 

 99,448 
 129,722 

 87,433 
 24,447 
 31,302 
 37,584 
 — 
 409,936 
 42,537 
 261,761 
 7,008 
 56,189 
 — 
 109,811 
 64,328 
 5,500 
 957,070 

 12,845 
 846 
 3,551 
 24,352 
 75,159 
 7,251 
 1,900 
 125,904 
 23,215 
 2,427 
 39,431 
 2,483 
 8,199 
 201,659 

 61,784  
 23,655  
 28,100  
 9,404  
 1,591  
 263,039  
 25,967  
 290,911  
 11,000  
 27,299  
 4,057  
 27,962  
 64,328  
 464  
 715,027  

 3,592  
 840  
 2,822  
 17,310  
 52,637  
 2,642  
 —  
 79,843  
 82,088  
 2,552  
 23,698  
 —  
 3,996  
 192,177  

$ 

$ 

 —  

 — 

 20  
 1,191,791  
 (678,096)  
 (209)  
 513,506  
 9,344  
 522,850  
 715,027  

$ 

 22 
 1,519,918 
 (771,242)
 (1,622)
 747,076 
 8,335 
 755,411 
 957,070 

See accompanying notes to consolidated financial statements. 

59 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
     
 
  
 
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
 
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
  
    
  
  
 
  
    
  
  
 
 
 
 
 
 
 
 
  
  
 
  
  
 
  
  
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
  
  
 
  
    
  
  
 
  
    
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

CONSOLIDATED STATEMENTS OF OPERATIONS 
(In thousands, except share and per share data) 

Revenue: 

Product revenue 
Service revenue 
Total revenue 
Operating expenses: 

Cost of sales (exclusive of depreciation and amortization shown 
separately below): 

Product cost of sales 
Service cost of sales 

Change in fair value of derivative warrants 
Selling, general and administrative 
Depreciation and amortization 
Total operating expenses 
Operating income (loss) 

Interest expense 
Interest income 
Other income, net 
Loss from equity method investments 
Gain from sale of certain assets of subsidiary 
Gain from formation of equity method investment 

Income (loss) before income taxes 

Income tax expense 

Net income (loss) 

Loss attributable to noncontrolling interest 

Net income (loss) attributable to Clean Energy Fuels Corp.  

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

Basic  
Diluted 

Weighted-average common shares outstanding: 

Basic  
Diluted 

2019 

Year Ended December 31,  
2020 

2021 

  $

 298,469    $ 
 45,596   
 344,065   

 251,954   $ 
 39,770  
 291,724  

 213,133 
 42,513 
 255,646 

 185,557   
 26,550   
 (1,039)  
 73,444   
 49,625   
 334,137   
 9,928   
 (7,574)  
 2,437   
 1,990   
 (119)  
 7,455   
 —   
 14,117   
 (858)  
 13,259   
 7,162   
 20,421    $ 

 161,705  
 23,705  
 (40) 
 68,516  
 47,682  
 301,568  
 (9,844) 
 (7,348) 
 1,345  
 3,025  
 (161) 
 1,063  
 700  
 (11,220) 
 (309) 
 (11,529) 
 1,665  
 (9,864)  $ 

 189,600 
 26,004 
 — 
 89,906 
 45,184 
 350,694 
 (95,048)
 (4,430)
 1,082 
 905 
 (430)
 3,885 
 — 
 (94,036)
 (119)
 (94,155)
 1,009 
 (93,146)

 0.10    $ 
 0.10    $ 

 (0.05)  $ 
 (0.05)  $ 

 (0.44)
 (0.44)

  $

  $
  $

   204,573,287   
   205,987,509   

   200,657,912  
   200,657,912  

   213,118,694 
   213,118,694 

See accompanying notes to consolidated financial statements. 

60 

 
 
 
 
 
 
 
 
 
 
 
 
  
    
    
     
    
       
      
  
 
  
  
  
 
  
  
  
 
  
    
  
   
  
  
 
  
    
  
   
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
   
  
  
 
  
    
  
 
  
  
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) 
(In thousands) 

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

Foreign currency 
translation adjustments 
net of $0 tax in 2019, 
2020 and 2021 
Unrealized gains on 
available-for-sale 
securities, net of $0 tax 
in 2019, 2020 and 2021 
Total other comprehensive 
income (loss) 
Comprehensive income 
(loss) 

Year Ended December 31, 2019 

Year Ended December 31, 2020 

Year Ended December 31, 2021 

    Clean Energy    Noncontrolling      
   Fuels Corp.    

Interest 

Total 

    Clean Energy    Noncontrolling      
   Fuels Corp.    

Interest 

Total 

    Clean Energy    Noncontrolling      
   Fuels Corp.    

Interest 

Total 

  $ 

 20,421    $ 

 (7,162)   $  13,259    $ 

 (9,864)  $ 

 (1,665)   $  (11,529)  $ 

 (93,146)   $ 

 (1,009)  $ (94,155)

 505   

 —   

 505   

 1,355   

 —   

 1,355   

 (1,394)  

 —   

 (1,394)

 67   

 572   

 —   

 —   

 67   

 572   

 2   

 —   

 2   

 (19)  

 —   

 (19)

 1,357   

 —   

 1,357   

 (1,413)  

 —   

 (1,413)

  $ 

 20,993    $ 

 (7,162)   $  13,831    $ 

 (8,507)  $ 

 (1,665)   $  (10,172)  $ 

 (94,559)   $ 

 (1,009)  $ (95,568)

See accompanying notes to consolidated financial statements. 

61 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
  
 
 
 
 
  
   
  
    
  
   
  
   
  
    
  
   
  
    
  
   
  
  
 
  
 
  
  
 
  
  
 
 
 
  
 
  
  
 
  
  
 
 
 
  
  
  
  
  
  
  
  
  
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 
(In thousands, except share data) 

Common stock  

Shares 

   Amount  

  Additional  
     Paid-In 
Capital 

    Accumulated     Comprehensive     

Income (Loss)  

  Noncontrolling  
Interest in 
Subsidiary 

Total 

    Stockholders’ 

  Accumulated   
Other 

Balance, January 1, 2019 

Issuance of common stock 
Stock-based compensation 
Net income (loss) 
Other comprehensive income 
Increase in ownership in subsidiary 

Balance, December 31, 2019 
Issuance of common stock 
Repurchase of common stock 
Stock-based compensation 
Net loss 
Other comprehensive income 
Increase in ownership in subsidiary 

Balance, December 31, 2020 

Issuance of common stock, net of issuance costs 
Repurchase of common stock 
Stock-based compensation 
Stock-based sales incentive charges 
Net loss 
Other comprehensive loss 
Balance, December 31, 2021 

 203,599,892    $ 
 1,123,163   
 —   
 —   
 —   
 —   
 204,723,055   
 1,512,535   
 (7,744,386) 
 —   
 —   
 —   
 —   
 198,491,204   
 24,646,419   
 (452,700) 
 —   
 —   
 —   
 —   

 222,684,923    $ 

 20    $ 1,198,769    $ 
 —   
 —   
 —   
 —   
 —   
 20   
 —   
 —   
 —   
 —   
 —   
 —   
 20   
 2   
 —   
 —   
 —   
 —   
 —   
 22    $ 1,519,918    $ 

 309   
 3,880   
 —   
 —   
 228   
   1,203,186   
 1,683   
 (14,647) 
 2,957   
 —   
 —   
 (1,388) 
   1,191,791   
 197,919   
 (2,916) 
 14,994   
 118,130   
 —   
 —   

Deficit 
 (688,653)  $ 
 —   
 —   
 20,421   
 —   
 —   
 (668,232) 
 —   
 —   
 —   
 (9,864) 
 —   
 —   
 (678,096) 
 —   
 —   
 —   
 —   
 (93,146) 
 —   
 (771,242)  $ 

 (2,138)  $ 
 —   
 —   
 —   
 572   
 —   
 (1,566) 
 —   

 —   
 —   
 1,357   
 —   
 (209) 
 —   
 —   
 —   
 —   
 —   
 (1,413) 
 (1,622)  $ 

 17,011   
 —   
 —   
 (7,162) 
 —   
 (228) 
 9,621   
 —   

 —   
 (1,665) 
 —   
 1,388   
 9,344   
 —   
 —   
 —   
 —   
 (1,009) 
 —   
 8,335    $ 

Equity 

 525,009 
 309 
 3,880 
 13,259 
 572 
 — 
 543,029 
 1,683 
 (14,647)
 2,957 
 (11,529)
 1,357 
 — 
 522,850 
 197,921 
 (2,916)
 14,994 
 118,130 
 (94,155)
 (1,413)
 755,411 

See accompanying notes to consolidated financial statements. 

62 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
     
 
  
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
  
 
 
 
 
 
  
  
 
 
 
 
 
  
  
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
  
  
 
 
 
 
 
  
  
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

CONSOLIDATED STATEMENTS OF CASH FLOWS 
(In thousands) 

Cash flows from operating activities: 
Net income (loss) 

Adjustments to reconcile net income (loss) to net cash provided by operating activities: 

Year Ended December 31,  
2020 

2019 

2021 

  $ 

 13,259    $ 

 (11,529)  $ 

 (94,155)

Depreciation and amortization 
Provision for credit losses and inventory 
Stock-based compensation expense 
Stock-based sales incentive charges 
Change in fair value of derivative instruments 
Amortization of discount and debt issuance cost 
Loss (gain) on disposal of property and equipment 
Loss on extinguishment of debt 
Gain from sale of certain assets of subsidiary 
Gain from formation of equity method investment 
Loss from equity method investments 
Non-cash lease expense 
Deferred income taxes 
Expense reimbursement from JV 
Changes in operating assets and liabilities: 

Accounts and other receivables 
Inventory 
Prepaid expenses and other assets 
Operating lease liabilities 
Accounts payable 
Deferred revenue 
Accrued liabilities and other 
Net cash provided by operating activities 

Cash flows from investing activities: 
Purchases of short-term investments 
Maturities and sales of short-term investments 
Purchases of and deposits on property and equipment 
Disbursements for loans receivable for RNG production projects 
Payments on and proceeds from sales of loans receivable 
Cash received from sale of certain assets of subsidiary, net 
Investments in other entities 
Payment and deposits on equipment and manure rights for RNG production projects 
Proceeds from disposal of property and equipment 

Net cash provided by (used in) investing activities 

Cash flows from financing activities: 

Issuance of common stock 
Repurchase of common stock 
Fees paid for issuance of common stock 
Fees paid for debt issuance costs 
Proceeds for Adopt-a-Port program 
Repayment of proceeds for Adopt-a-Port program 
Proceeds from debt instruments 
Proceeds from revolving line of credit 
Repayments of borrowing under revolving line of credit 
Repayments of debt instruments and finance lease obligations 
Payments of debt extinguishment costs 

Net cash (used in) provided by financing activities 

Effect of exchange rates on cash, cash equivalents and restricted cash 

Net increase (decrease) in cash, cash equivalents and restricted cash 

Cash, cash equivalents and restricted cash, beginning of period 
Cash, cash equivalents and restricted cash, end of period 
Supplemental disclosure of cash flow information: 

Income taxes paid  
Interest paid, net of $441, $57 and $0 capitalized, respectively 

  $ 

  $ 
  $ 

 49,625   
 2,586   
 3,880   
 —   
 5,545   
 (728) 
 (2,536) 
 —   
 (7,455) 
 —   
 119   
 3,234   
 738   
 —   

 (63,408) 
 3,439   
 (16,617) 
 (3,786) 
 9,316   
 (3,528) 
 18,596   
 12,279   

 (171,080) 
 180,704   
 (27,088) 
 —   
 608   
 7,582   
 —   
 —   
 7,772   
 (1,502) 

 309   
 —   
 —   
 (123) 
 —   
 —   
 15,294   
 —   
 —   
 (7,795) 
 —   
 7,685   
 136   
 18,598   
 34,624   
 53,222    $ 

 47,682   
 2,662   
 2,957   
 —   
 (2,175) 
 (46) 
 (2,875) 
 1,249   
 (1,063) 
 (700) 
 161   
 2,756   
 120   
 —   

 53,784   
 108   
 5,275   
 (3,141) 
 (9,337) 
 (10,976) 
 (13,871) 
 61,041   

 (74,292) 
 101,850   
 (13,273) 
 (535) 
 1,567   
 4,830   
 (650) 
 —   
 4,673   
 24,170   

 1,683   
 (14,647) 
 —   
 (131) 
 —   
 —   
 65,860   
 —   
 —   
 (70,399) 
 (1,023) 
 (18,657) 
 201   
 66,755   
 53,222   

 119,977    $ 

 45,184 
 1,257 
 14,994 
 83,641 
 3,490 
 20 
 1,365 
 39 
 (3,885)
 — 
 430 
 2,945 
 69 
 1,640 

 (24,260)
 (5,704)
 (10,498)
 (3,053)
 6,615 
 4,550 
 16,614 
 41,298 

 (324,170)
 223,991 
 (23,075)
 (3,905)
 421 
 887 
 (78,919)
 (5,830)
 2,941 
 (207,659)

 204,455 
 (2,916)
 (6,534)
 (1,277)
 5,815 
 (360)
 4,400 
 1,450 
 (1,450)
 (50,737)
 (14)
 152,832 
 8 
 (13,521)
 119,977 
 106,456 

 36    $ 
 6,788    $ 

 8    $ 
 5,622    $ 

 15 
 3,907 

See accompanying notes to consolidated financial statements. 

63 

 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
 
 
 
 
 
 
  
 
  
 
  
 
  
  
  
 
  
  
  
 
  
  
  
 
 
 
 
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
  
  
 
  
  
  
 
  
  
  
 
 
 
 
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
   
  
 
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
   
  
 
  
  
 
  
  
  
 
 
 
 
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
 
 
 
 
 
  
  
  
 
  
  
  
 
 
 
 
 
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
  
   
  
   
  
  
 
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 (procured from  our own projects  or from  third parties) 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 CNG and LNG via “virtual” natural 
gas pipelines and interconnects; sells U.S. federal, state and local government credits it generates 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 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) 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. 

64 

CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Inventories consisted of the following as of December 31, 2020 and 2021 (in thousands): 

Raw materials and spare parts 

Total inventory 

Derivative Instruments and Hedging Activities 

  $ 
  $ 

2020 
 28,100    $ 
 28,100    $ 

2021 
 31,302 
 31,302 

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 grant funding to assist in the financing of fueling station construction. The 
Company records the grant proceeds as a reduction of the cost of the respective asset. Total grant proceeds received were 
approximately  $1.6  million,  $0.0  million,  and  $0.5  million  for  the years  ended  December  31,  2019,  2020,  and  2021, 
respectively. 

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 
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. 

65 

 
 
 
 
 
 
 
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

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, 2019, 2020  and 

2021. 

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 from one to eight years for customer 
relationships, one to twenty 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, 2020 and 2021 were as follows (in thousands): 

Customer relationships 
Acquired contracts 
Trademark and trade names 
Non-compete agreements 
Total intangible assets 

Less accumulated amortization 

Net intangible assets 

  $ 

2020 
 5,376   $ 
 4,384  
 2,700  
 860  
 13,320  
 (12,856) 

  $ 

 464   $ 

2021 
 5,376 
 9,884 
 2,700 
 860 
 18,820 
 (13,320)
 5,500 

Amortization  expense  for  intangible  assets  was  $1.0  million,  $0.8  million,  and  $0.5  million  for  the years  ended 

December 31, 2019, 2020, and 2021, respectively. 

In 2021, the Company acquired contractual rights to manure feedstock for an anaerobic digester gas (“ADG”) RNG 
production  project  totaling  $5.5  million.  The  acquired  manure  rights  have  an  initial  term  of  20  years.  Amounts  are 

66 

 
 
 
 
 
 
 
 
     
     
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

classified and included under “Acquired contracts” in the table above. As of December 31, 2021, the Company paid $1.0 
million and accrued $4.5 million, which was included in “Accrued liabilities” in the accompanying consolidated balance 
sheets,  related  to  the  acquired  manure  rights.  The  $4.5  million  was  excluded  from  the  accompanying  consolidated 
statements  of  cash  flows  as  it  was  a  non-cash  investing  activity.  The  intangible  asset  related  to  manure  rights  will  be 
amortized over the contractual term of 20 years using the straight-line method with amortization commencing on the date 
of commercial operation of the ADG RNG facility. 

Estimated amortization expense subsequent to the year ended December 31, 2021 is expected to be approximately 
$0.0 million in 2022, $0.0 million in 2023, $0.3 million in 2024, $0.3 million in 2025, $0.3 million in 2026, and $4.6 
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 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,  2019,  2020  and  2021,  the  Company  utilized  the  quantitative  approach  and 

concluded there were no indicators of impairment to goodwill. 

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

Balance as of December 31, 2019 
Balance as of December 31, 2020 
Balance as of December 31, 2021 

Revenue Recognition 

$ 
$ 
$ 

 64,328 
 64,328 
 64,328 

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 
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. 

67 

 
 
 
 
 
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

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. 

Volume-Related 

The Company’s volume-related revenue primarily consists of sales of RNG and conventional natural gas, in the form 
of CNG and LNG, O&M services and RINs and LCFS Credits in addition to Amazon Warrant Charges and changes in 
fair value of the Company’s derivative instruments associated with providing fuel to customers under contracts. 

Fuel  and  O&M  services  are  sold  pursuant  to  contractual  commitments  over  defined  goods-and-service  delivery 
periods. These contracts typically include a stand-ready obligation to supply natural gas and/or provide O&M services 
daily 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 fuel and O&M services 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 of fuel dispensed by the customer and current pricing conditions, which are typically billed to 
the customer 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 and O&M 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. 

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. 

Amazon Warrant Charges (defined in Note 13) 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 and 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. 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, 2019, 2020 and 2021, changes 
in the fair value of commodity swaps and customer contracts amounted to a gain (loss) of $(6.6) million, $2.1 million, and 
$(3.5) million, respectively.  

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. 

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

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 is 
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 
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. 

AFTC 

See discussion under “Alternative Fuel Tax Credit” below for more information about AFTC, which is not recognized 

as revenue until the period the credit is authorized through federal legislation. 

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

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 Tax Credit 

Under separate pieces of U.S. federal legislation, the Company has been eligible to receive a federal alternative fuels 
tax credit (“AFTC”) for its natural gas vehicle fuel sales made between October 1, 2006 and December 31, 2021. The 
AFTC, which had previously expired on December 31, 2016, was reinstated on February 9, 2018 to apply retroactively to 
vehicle  fuel  sales  made  from  January 1,  2017  through  December 31,  2017.  On  December  20,  2019,  AFTC  was 
retroactively extended beginning January 1, 2018 through December 31, 2020 and subsequently extended for vehicle fuel 
sales made through December 31, 2021. 

As a result of the legislation authorizing AFTC being signed into law on December 20, 2019, all AFTC revenue for 
vehicle fuel the Company sold in the 2018 and 2019 calendar years, totaling $47.1 million, was recognized during the year 
ended December 31, 2019. AFTC was extended in December 2020 and is currently available for vehicle fuel sales made 
through December 31, 2021. The AFTC credit is equal to $0.50 per gasoline gallon equivalent 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 2019, 2020 and 2021. 

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 $1.2 million, $0.0 million and $0.0 million for 

the years ended December 31, 2019, 2020 and 2021, respectively. 

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 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 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 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

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 to be sustained 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 Income (Loss) Per Share 

Basic net income (loss) per share is computed by dividing the net income (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  income  (loss)  per  share  is  computed  by  dividing  the  net  income  (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 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 income (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  as  accumulated  other 
comprehensive income (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 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

statements of operations. For each of the years ended December 31, 2019, 2020 and 2021, foreign exchange transaction 
gains  and  (losses)  were  included  in  “Other  income  (expense),  net”  in  the  accompanying  consolidated  statements  of 
operations and were $0.0 million. 

Comprehensive Income (Loss) 

Comprehensive income (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 income (loss) 
and comprehensive income (loss) for the years ended December 31, 2019, 2020 and 2021 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. 

Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements 

Recently Adopted Accounting Pronouncements 

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for 
Income Taxes. This new standard clarifies and simplifies the accounting for income taxes, including guidance related to 
intraperiod  tax  allocation,  the  recognition  of  deferred  tax  liabilities  for  outside  basis  differences,  the  methodology  for 
calculating  income  taxes  in  an  interim  period,  and  the  application  of  income  tax  guidance  to  franchise  taxes  that  are 
partially based on income. This standard is effective for fiscal years, and interim periods within those years, beginning 
after December 15, 2020, with early adoption permitted in any interim period within that year. The Company adopted this 
standard in the first quarter of 2021. The adoption of this ASU did not have a material impact on its consolidated financial 
statements and related disclosures. 

Recently Issued Accounting Pronouncements 

In July 2021, the FASB issued ASU No. 2021-05, Leases (Topic 842): Lessors–Certain Leases with Variable Lease 
Payments. This new accounting amendment requires a lessor to classify leases with variable lease payments that do not 
depend on an index or rate as operating leases on the commencement date if classification as a sales-type or direct financing 
lease would result in a day-one loss. The amendment in this update is effective for fiscal years, and interim periods within 
those years, beginning after December 15, 2021, with early adoption permitted. The Company is currently evaluating the 
impact  of  adopting  this  new  accounting  amendment  and  does  not  expect  the  update  to  have  a  material  impact  on  its 
consolidated financial statements and related disclosures. 

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832): Disclosures by Business 
Entities about Government Assistance, which requires business entities (except for not-for-profit entities and employee 
benefit  plans)  to  disclose  information  about  certain  government  assistance  they  receive.  The  Topic  832  disclosure 
requirements include: (i) the nature of the transactions and the related accounting policy used; (ii) the line items on the 
balance sheet and income statement that are affected and the amounts applicable to each financial statement line item; and 
(iii) significant terms and conditions of the transactions. The ASU is effective for fiscal years beginning after December 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

15, 2021, with early adoption permitted. The Company is currently evaluating the impact of adopting this new ASU and 
does not expect the update to have a material impact on its consolidated financial statements and related disclosures. 

Note 2 —Revenue from Contracts with Customers 

Disaggregation of Revenue 

The table below presents the Company’s revenue disaggregated by revenue source (in thousands): 

Years Ended December 31,  
2020 

2021 

2019 

Volume-related (1) (2)  
Station construction sales 
AFTC (3) 
Other 

Total revenue 

  $  273,535    $  245,300    $  218,540 
 16,406 
 20,700 
 — 
  $  344,065    $  291,724    $  255,646 

 23,120   
 47,123   
 287   

 26,593   
 19,831   
 —   

(1)    Includes changes in fair value of derivative instruments related to the Company’s commodity swap and customer fueling contracts. See Note 1 and 
Note 7 for more information about these derivative instruments. For the years ended December 31, 2019, 2020 and 2021, changes in the fair value 
of  commodity  swaps  and  customer  fueling  contracts  amounted  to  a  loss  of  $6.6  million,  a  gain  of  $2.1  million,  and  a  loss  of  $3.5  million, 
respectively. 

(2)    Includes non-cash stock-based sales incentive contra-revenue charges associated with the Amazon Warrant for the years ended December 31, 2019, 

2020 and 2021 of $0.0 million, $0.0 million and $83.6 million, respectively. See Note 13 for more information. 

(3)    Represents the federal alternative fuel excise tax credit that we refer to as “AFTC,” which was extended for vehicle fuel sales made beginning 

January 1, 2021 through December 31, 2021. 

Remaining Performance Obligations 

Remaining performance obligations represent the transaction price of customer orders for which the work has not 
been  performed.  As  of  December  31,  2021,  the  aggregate  amount  of  the  transaction  price  allocated  to  remaining 
performance  obligations  was  $19.8  million,  which  related  to  the  Company’s  station  construction  sale  contracts.  The 
Company expects to recognize revenue on the remaining performance obligations under these contracts over the next 12 
to 24 months. 

For volume-related revenue, the Company has elected to apply an optional exemption, which waives the requirement 
to disclose the remaining performance obligation for revenue recognized through the ‘right to invoice’ practical expedient. 

Costs to Fulfill a Contract 

The Company capitalizes costs incurred to fulfill its contracts that (1) relate directly to the contract, (2) are expected 
to generate resources that will be used to satisfy the Company’s performance obligations under the contract, and (3) are 
expected  to  be  recovered  through  revenue  generated  under  the  contract.  Contract  fulfillment  costs  are  recorded  to 
depreciation  expense  as  the  Company  satisfies  its  performance  obligations  over  the  term  of  the  contract.  These  costs 
primarily  relate  to  set-up  and  other  direct  installation  costs  incurred  by  NG  Advantage,  LLC  (“NG  Advantage”),  for 
equipment that must be installed on customers’ land before NG Advantage is able to deliver CNG to the customer because 
the customer does not have direct access to the natural gas pipelines. These costs are classified in “Land, property, and 
equipment, net” in the accompanying consolidated balance sheets. As of December 31, 2020 and 2021, these capitalized 
costs incurred to fulfill contracts were $10.4 million and $10.1 million with accumulated depreciation of $7.1 million and 
$7.6 million, respectively, and related depreciation expense of $0.8 million and $0.5 million for the years ended December 
31, 2020 and 2021, respectively. 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Contract Balances 

The  timing  of  revenue  recognition,  billings  and  cash  collections  results  in  billed  accounts  receivable,  unbilled 
receivables (contract assets), and customer advances and deposits (contract liabilities) in the accompanying consolidated 
balance sheets. Changes in the contract asset and liability balances during the year ended December 31, 2021, were not 
materially affected by any factors outside the normal course of business. 

As of December 31, 2020 and 2021, the Company’s contract balances were as follows (in thousands): 

Accounts receivable, net 

Contract assets - current 
Contract assets - non-current 

Contract assets - total 

Contract liabilities - current 
Contract liabilities - non-current 

Contract liabilities - total 

Accounts Receivable, Net 

2020 

2021 

  $ 

 61,784   $ 

 87,433 

  $ 

  $ 

  $ 

  $ 

 729   $ 

 3,998  
 4,727   $ 

 1,638   $ 
 59  
 1,697   $ 

 966 
 3,532 
 4,498 

 5,523 
 — 
 5,523 

“Accounts receivable, net” in the accompanying consolidated balance sheets include amounts billed and currently due 
from customers. The amounts due are stated at their net estimated realizable value. The Company maintains an allowance 
to provide for the estimated amount of receivables that will not be collected. The allowance is based upon an assessment 
of customer creditworthiness, historical payment experience, the age of outstanding receivables, and economic conditions 
that may affect a customer’s ability to pay. 

Contract Assets 

Contract assets include unbilled amounts typically resulting from the Company’s station construction sale contracts, 
when the cost-to-cost method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the 
customer, and right to payment is not just subject to the passage of time. Amounts may not exceed their net realizable 
value. Contract assets are classified as current or noncurrent based on the timing of billings. The current portion is included 
in “Prepaid expenses and other current assets” and the noncurrent portion is included in “Notes receivable and other long-
term assets, net” in the accompanying consolidated balance sheets. 

Contract Liabilities 

Contract liabilities consist of billings in excess of revenue recognized from the Company’s station construction sale 
contracts and payments received primarily from customers of NG Advantage in advance of the performance obligations 
and are classified as current or noncurrent based on when the revenue is expected to be recognized. The current portion 
and  noncurrent  portion  of  contract  liabilities  are  included  in  “Deferred  revenue”  and  “Other  long-term  liabilities,” 
respectively, in the accompanying consolidated balance sheets. Billings in excess of revenue recognized of $1.0 million 
and $5.4 million and advance payments of $0.6 million and $0.1 million are classified as current as of December 31, 2020 
and 2021, respectively.  

Revenue recognized during the year ended December 31, 2020 related to the Company’s contract liability balances 
as of December 31, 2019 was $4.8 million. The increase in the contract liability balances for the year ended December 31, 

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

2021 was primarily driven by billings in excess of revenue recognized, offset by $1.5 million of revenue recognized related 
to the Company’s contract liability balances as of December 31, 2020. 

Note 3 —Divestitures 

bp Transaction 

On  February 27,  2017,  Clean  Energy  Renewable  Fuels  (“Renewables”)  entered  into  an  asset  purchase  agreement 
(the “APA”) with BP Products North America (“bp”). Pursuant to the APA, Renewables agreed to sell to bp its assets 
relating to its RNG production business (the “bp Transaction”), consisting of Renewables’ two RNG production facilities, 
Renewables’  interest  in  joint  ventures  formed  with  a  third-party  to  develop  new  RNG  production  facilities,  and 
Renewables’ third-party RNG supply contracts (the “Assets”).  

Under the APA, bp was required, following the closing of the bp Transaction, to pay Renewables up to an additional 
$25.0 million in cash over a five-year period if certain conditions relating to the Assets are met. In February 2018, the 
Company received $0.9 million in cash for its satisfaction of the performance criteria for the first period under the APA, 
which ended on December 31, 2017. Upon its receipt of such cash, the Company paid $0.1 million in cash and issued 
15,877 shares of the Company’s common stock with a fair value of $0.0 million to former holders of options to purchase 
membership  units  in  Renewables.  The  performance  criteria  for  the  second  period  under  the  APA,  which  ended  on 
December 31, 2018, was also satisfied, and the Company received a cash payment of $5.4 million in March 2019. During 
the year ended December 31, 2019, after receipt of the cash payment, the Company paid $0.6 million in cash to former 
holders of options to purchase membership units in Renewables. In December 2019, the Company and bp entered into an 
Amendment to the APA (“Amended APA”) which amended the earn-out for years four and five and paid the Company an 
additional $2.8 million for year three of the earn-out period. As a result of the performance criteria for year three under 
the APA being satisfied, and the additional $2.8 million received by the Company in December 2019 in accordance with 
the Amended APA, the Company recognized a gross gain of $8.4 million and accrued amounts due to former holders of 
options to purchase membership units in Renewables of $0.9 million as of December 31, 2019. During the year ended 
December 31, 2020, the Company recognized a gross gain of $1.0 million and accrued amounts due to former holders of 
options to purchase membership units in Renewables of $0.1 million as a result of the performance criteria being satisfied 
for year four under the Amended APA. During the year ended December 31, 2021, the Company recognized a gross gain 
of $4.4 million and accrued amounts due to former holders of options to purchase membership units in Renewables of 
$0.5 million as a result of the performance criteria being satisfied for year five under the Amended APA, representing the 
final earn-out payment under the Amended APA. The Company recognized a net gain of $7.5 million, $1.1 million, and 
$3.9 million during the years ended December 31, 2019, 2020 and 2021, respectively, which is included in “Gain from 
sale of certain assets of subsidiary” in the accompanying consolidated statements of operations.  

As of December 31, 2021, the Company has paid $10.3 million in cash and issued 770,269 shares of the Company’s 
common stock with a fair value of $2.0 million to former holders of options to purchase membership units in Renewables.  

Following the completion of the bp Transaction, Renewables and the Company continue to procure RNG from bp 
under  a  long-term  supply  contract  (the  “bp  Supply  Agreement”)  and  from  other  RNG  suppliers  and  resell  such  RNG 
through the Company’s fueling infrastructure. On October 1, 2018, Renewables and bp amended the bp Supply Agreement 
to extend the term and add additional RNG supply. bp and Renewables share in the RINs and LCFS Credits generated 
from the increased RNG supply sold through the Company’s vehicle fueling infrastructure and to other customers. See 
Note 1 for information on revenue recognition of these credits. 

SAFE&CEC S.r.l. 

On November 26, 2017, the Company, through its former subsidiary, IMW Industries Ltd. (formerly known as Clean 
Energy  Compression  Corp.)  (“CEC”),  entered  into  an  investment  agreement  with  Landi  Renzo  S.p.A.  (“LR”),  an 
alternative fuels company based in Italy. Pursuant to the investment agreement, the Company and LR agreed to combine 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

their  respective  natural  gas  compressor  fueling  systems  manufacturing  subsidiaries,  CEC  and  SAFE  S.p.A,  in  a  new 
company,  “SAFE&CEC  S.r.l.”  (such  combination  transaction  is  referred  to  as  the  “CEC  Combination”).  SAFE&CEC 
S.r.l. is focused on manufacturing, selling and servicing natural gas fueling compressors and related equipment for the 
global natural gas fueling market. At the closing of the CEC Combination on December 29, 2017, the Company owns 49% 
of SAFE&CEC S.r.l. and LR owns 51% of SAFE&CEC S.r.l. 

The  Company  accounts  for  its  interest  in  SAFE&CEC  S.r.l.  using  the  equity  method  of  accounting  because  the 
Company does not control but has the ability to exercise significant influence over SAFE&CEC S.r.l.’s operations. The 
Company recorded income (loss) from this investment of $0.0 million, $(0.2) million and $0.6 million for the years ended 
December 31, 2019, 2020 and 2021, respectively. The Company had an investment balance in SAFE&CEC S.r.l. of $24.7 
million and $23.9 million as of December 31, 2020 and 2021, respectively. 

Note 4 —Investments in Other Entities and Noncontrolling Interest in a Subsidiary 

TotalEnergies Joint Venture 

On March 3, 2021,  the  Company  entered  an  agreement  (“TotalEnergies  JV  Agreement”)  with  TotalEnergies  S.E. 
(“TotalEnergies”) that created a 50/50 joint venture (“TotalEnergies JV”) to develop ADG RNG production facilities in 
the United States. Each ADG RNG production facility project under the TotalEnergies JV will be formed as a separate 
limited  liability  company  (“LLC”)  that  is owned 50/50 by  the  Company  and  TotalEnergies,  and  contributions  to  such 
LLCs  count  toward  the  TotalEnergies  JV  Equity  Obligations  (as  defined  below).  The  TotalEnergies  JV  Agreement 
contemplates that the TotalEnergies JV will invest up to $400.0 million of equity in production projects, and TotalEnergies 
and the Company each committed to initially provide $50.0 million for the TotalEnergies JV (the “TotalEnergies JV Equity 
Obligations”). To fund the Company’s TotalEnergies JV Equity Obligations, the Company had the option to borrow $20.0 
million from Société Générale, a company incorporated as a société anonyme under the laws of France (“SG”), pursuant 
to the Credit Agreement (defined in Note 12). On October 12, 2021, TotalEnergies and the Company executed a LLC 
agreement (the “DR Development Agreement”) for an ADG RNG production facility project (the “DR JV”). Under the 
DR Development Agreement, TotalEnergies and the Company have each committed to contribute $7.0 million to the DR 
JV. On November 1, 2021, TotalEnergies and the Company have each contributed an initial $4.8 million to the DR JV. 
Assets related to the DR JV were deconsolidated from the Company as of October 12, 2021. No gain or loss was recognized 
from the transaction. The Company accounts for its interest in the LLCs using the equity method of accounting because 
the Company does not control but has the ability to exercise significant influence over the LLCs’ operations. The Company 
recorded a loss of $0.1 million from the TotalEnergies JV for the year ended December 31, 2021, related to formation 
expenses. As of December 31, 2021, the Company had an investment balance in the TotalEnergies JV of $4.7 million. 

76 

 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The following table presents combined summarized financial information for the TotalEnergies JV (in thousands): 

Revenue 
Gross profit 
Operating loss 
Net loss 

Current assets 
Non-current assets 

Total assets 

Current liabilities 
Non-current liabilities 

Total liabilities 

bp Joint Venture 

Year Ended  
December 31,  
2021 

$ 
$ 
$ 
$ 

 — 
 — 
 (119)
 (119)

As of December 31, 
2021 

$ 

$ 

$ 

$ 

 3,086 
 13,103 
 16,189 

 6,770 
 — 
 6,770 

On April 13, 2021, the Company entered 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. Pursuant to the bp JV 
Agreement, bp and the Company committed to provide $50.0 million and $30.0 million, respectively, with bp and the 
Company 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  and  consisted  of  all  unpaid  principal 
outstanding  under  the  loan  agreement  dated  December  18,  2020,  pursuant  to  which  bp  advanced  $50.0  million  to  the 
Company to fund capital costs and expenses incurred prior to formation of the bpJV, including capital costs and expenses 
for  permitting,  engineering,  equipment,  leases  and  feed  stock  rights.  100%  of  the  RNG  produced  from  the  projects 
developed and owned by the bpJV will be provided to the vehicle fuels market pursuant to the Company’s marketing 
agreement with bp. 

Pursuant to the bp JV Agreement, the Company 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,  the  Company  contributed  $50.2  million  to  the  bpJV,  which  consisted  of  (i)  its  initial  contribution 
commitment of $30.0 million, (ii) the $20.0 million additional contribution to effect the conversion of bp’s Class B Units 
into Class A Units pursuant to the Company’s exercise of the bp Option, and (iii) $0.2 million for interest on bp’s Class B 
Units to acquire additional Class A Units. In December 2021, the bpJV authorized a capital call (the “bpJV Capital Call”) 
for additional funding of $143.2 million, requiring bp and the Company each to contribute $71.6 million. As of December 
31, 2021, bp and the Company have contributed $71.6 million and $20.0 million, respectively, to the bpJV in connection 
with the bpJV Capital Call. The remaining contribution balance of $51.6 million due from the Company will be paid on 
or prior to June 30, 2022. As of December 31, 2021, the Company and bp each own 50% of the bp JV. 

The Company accounts for its interest in the bpJV using the equity method of accounting because the Company does 
not control but has the ability to exercise significant influence over the bpJV’s operations. The Company recorded a loss 
of $0.4 million from this investment for the year ended December 31, 2021, related to formation expenses. The Company 
had an investment balance in the bpJV of $69.8 million as of December 31, 2021. 

77 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Combined summarized financial information for the bpJV is as follows (in thousands): 

Revenue 
Gross profit 
Operating loss 
Net loss 
Net loss attributable to bpJV 

Current assets 
Non-current assets 

Total assets 

Current liabilities 
Non-current liabilities 

Total liabilities 

Equity attributable to shareowners of bpJV 
Equity attributable to noncontrolling interest 

Total equity 

SAFE&CEC S.r.l. 

Year Ended  
December 31,  
2021 

  $ 
  $ 
  $ 
  $ 
  $ 

 — 
 — 
 (678)
 (603)
 (599)

     As of December 31,

   $ 

  $ 

  $ 

  $ 

  $ 

  $ 

2021 
 152,072 
 70,433 
 222,505 

 24,932 
 1,000 
 25,932 

 191,170 
 5,403 
 196,573 

On December 29, 2017, the Company obtained a 49% ownership interest in SAFE&CEC S.r.l. See Note 3 for more 

information. 

Summarized financial information for SAFE&CEC S.r.l. is as follows (in thousands): 

Revenue 
Gross profit 
Operating income 
Net income (loss) 

Current assets 
Non-current assets 

Total assets 

Current liabilities 
Non-current liabilities 

Total liabilities 

  $ 
  $ 
  $ 
  $ 

78 

Year Ended December 31,  
2020 
 89,535   $   109,119 
 25,784 
 19,008   $ 
 4,728 
 609   $ 
 2,392 
 (306)  $ 

2019 
 80,886   $ 
 20,525   $ 
 1,207   $ 
 93   $ 

2021 

  $ 

As of December 31, 
2021 
2020 
 75,137 
 60,406   $ 
 56,052 
 58,140    
  $   118,546   $   131,189 

  $ 

  $ 

 55,780   $ 
 11,808    
 67,588   $ 

 58,910 
 21,730 
 80,640 

 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
     
 
       
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
   
 
   
     
 
 
 
 
 
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Other Equity Method Investments 

The Company had an investment balance in other equity method investments of $2.3 million and $3.5 million as of 
December 31, 2020 and 2021, respectively. The Company recorded income (loss) from other equity method investments 
of $(0.1) million, $0.1 million, and $(0.6) million for the years ended December 31, 2019, 2020 and 2021, respectively. 
The Company accounts for its interest using the equity method of accounting because the Company does not control but 
has the ability to exercise significant influence over the investees’ operations. 

Combined summarized financial information for the Company’s other equity method investments is as follows (in 

thousands): 

Revenue 
Gross profit 
Operating loss 
Net loss 

Current assets 
Non-current assets 

Total assets 

Current liabilities 
Non-current liabilities 

Total liabilities 

NG Advantage 

Year Ended December 31,  
2020 

2021 

2019 

  $ 
  $ 
  $ 
  $ 

 546   $ 
 178   $ 
 (214)  $ 
 (250)  $ 

 463   $ 
 155   $ 
 (90)  $ 
 (126)  $ 

 704 
 216 
 (1,757)
 (1,793)

As of December 31, 

2020 

2021 

$ 

$ 

$ 

$ 

 1,233   $ 
 5,553  
 6,786   $ 

 1,421   $ 
 66  
 1,487   $ 

 1,349 
 7,047 
 8,396 

 1,012 
 192 
 1,204 

On October 14, 2014, the Company entered into a Common Unit Purchase Agreement (“UPA”) with NG Advantage 
for a 53.3% controlling interest in NG Advantage. NG Advantage is engaged in the business of transporting CNG in high-
capacity trailers to industrial and institutional energy users, such as hospitals, food processors, manufacturers and paper 
mills that do not have direct access to natural gas pipelines. 

In connection with the arrangement between NG Advantage and bp for the supply, sale and reservation of a specified 
volume of CNG transportation capacity until February 2022, on February 28, 2018, the Company entered into a guaranty 
agreement with NG Advantage and bp pursuant to which the Company guarantees NG Advantage’s payment obligations 
to bp in the event of default by NG Advantage under the supply arrangement, in an amount up to an aggregate of $30.0 
million  plus  related  fees  which  was  reduced  to  $15.0  million  effective  June  24,  2020.  As  initial  consideration  for  the 
guaranty  agreement,  NG  Advantage  issued  to  the  Company  19,660  common  units,  which  increased  the  Company’s 
controlling interest in NG Advantage from 53.3% to 53.5%.  

On October 1, 2018, the Company purchased 1,000,001 common units from NG Advantage for an aggregate cash 
purchase price of $5.0 million. This purchase increased Clean Energy’s controlling interest in NG Advantage from 53.5% 
to 61.7%. 

In each month from November 2018 through February 2019, the Company was issued 100,000 additional common 
units of NG Advantage, for a total of 400,000 common units, pursuant to the guaranty agreement entered in February 
2018. The issuance of 400,000 additional common units increased the Company’s controlling interest in NG Advantage 
to 64.6%. 

79 

 
 
 
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
  
  
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

During the year ended December 31, 2019, the Company agreed to lend NG Advantage up to $26.7 million under a 
series of promissory notes that were incorporated into a delayed draw convertible promissory note (the “November 2019 
Convertible Note”). In connection with the promissory notes between NG Advantage and the Company, NG Advantage 
issued to the Company warrants to purchase 2,086,879 common units. On February 6, 2020, the Company converted the 
outstanding  principal  and  accrued  interest  under  the  November  2019  Convertible  Note  into  common  units  of  NG 
Advantage, resulting in an increase in the Company’s controlling interest in NG Advantage from 64.6% to 93.2%. 

On February 29, 2020, NG Advantage issued to the Company 283,019 common units of NG Advantage pursuant to 
the guaranty agreement entered in February 2018, which increased the Company’s controlling interest in NG Advantage 
to 93.3% as of December 31, 2020. 

During the year ended December 31, 2021, NG Advantage borrowed $5.0 million from the Company under a series 
of advance agreements. As of December 31, 2021, NG advantage had an outstanding balance of $18.4 million, plus accrued 
and unpaid interest under the advance agreements. This intercompany transaction has been eliminated in consolidation. 

The Company recorded a loss attributable to the noncontrolling interest in NG Advantage of $7.2 million, $1.7 million, 
and $1.0 million for the years ended December 31, 2019, 2020 and 2021, respectively. The noncontrolling interest was 
$9.3 million and $8.3 million as of December 31, 2020 and 2021, respectively. 

Investments in Equity Securities 

For investments in equity securities of privately held entities without readily determinable fair values, the Company 
measures such investments at cost, adjusted for impairment, if any, and observable price changes in orderly transactions 
for the identical or similar investment of the same issuer. As of December 31, 2021, the Company had investment balance 
recorded at cost of $8.0 million. The Company did not recognize any adjustments to the recorded cost basis during the 
year ended December 31, 2021. 

Note 5 —Cash, Cash Equivalents and Restricted Cash 

Cash,  cash  equivalents  and  restricted  cash  as  of  December  31,  2020  and  2021  consisted  of  the  following  (in 

thousands): 

Current assets: 
Cash and cash equivalents 

Total cash and cash equivalents 

Long-term assets: 
Restricted cash - standby letters of credit 
Restricted cash - held as collateral 

Total restricted cash 

2020 

2021 

  $ 
  $ 

 108,977   $ 
 108,977   $ 

 99,448 
 99,448 

  $ 

  $ 

 4,000   $ 
 7,000  
 11,000   $ 

 — 
 7,008 
 7,008 

Total cash, cash equivalents and restricted cash 

  $ 

 119,977   $ 

 106,456 

The Company considers all highly liquid investments with maturities of three months or less on the date of acquisition 

to be cash equivalents. 

The  Company  places  its  cash  and  cash  equivalents  with  high  credit  quality  financial  institutions.  At  times,  such 
investments may be in excess of the Federal Deposit Insurance Corporation (“FDIC”) and Canadian Deposit Insurance 
Corporation (“CDIC”) limits. Financial instruments that potentially subject the Company to concentrations of credit risk 

80 

 
 
 
 
 
 
 
 
 
 
  
 
    
 
  
 
 
   
 
   
 
  
   
  
  
 
 
 
 
 
   
 
   
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

consist principally of cash deposits. The amounts in excess of FDIC and CDIC limits were approximately $107.6 million 
and $98.0 million as of December 31, 2020 and 2021, respectively. 

The Company classifies restricted cash as short-term and a current asset if the cash is expected to be used in operations 
within a year or to acquire a current asset. Otherwise, the restricted cash is classified as long-term. Long-term restricted 
cash consisted of cash held as collateral for the benefit of a lender to NG Advantage. 

Note 6 — Short-Term Investments 

Short-term investments include available-for-sale debt securities and certificates of deposit. Available-for-sale debt 
securities are carried at fair value, inclusive of unrealized gains and losses. Unrealized gains and losses on available for 
sale debt securities are recognized in other comprehensive income (loss), net of applicable income taxes. Gains or losses 
on sales of available-for-sale debt securities are recognized on the specific identification basis. 

The Company reviews available-for-sale debt securities for declines in fair value below their cost basis each quarter 
and whenever events or changes  in circumstances indicate that the  cost basis of an asset  may not be recoverable,  and 
evaluates the current expected credit loss. This evaluation is based on a number of factors, including historical experience, 
market  data,  issuer-specific  factors,  economic  conditions,  and  any  changes  to  the  credit  rating  of  the  security.  As  of 
December 31, 2021, the Company has not recorded a credit loss related to available-for-sale debt securities and believes 
the carrying values for its available-for-sale debt securities are properly recorded. 

Short-term investments as of December 31, 2020 consisted of the following (in thousands): 

Municipal bonds and notes 
Certificates of deposit 

Total short-term investments 

Gross 
Unrealized 

Amortized 
 Cost 
 28,998   $ 
 530  
 29,528   $ 

Estimated 
      Gain (Loss)        Fair Value 
 28,998 
 —   $ 
 530 
 —  
 29,528 
 —   $ 

  $ 

  $ 

Short-term investments as of December 31, 2021 consisted of the following (in thousands): 

  Amortized 

 Cost 

Gross  
Unrealized 
Loss 

Municipal bonds and notes 
Zero coupon bonds 
Certificates of deposit 

Total short-term investments 

  $ 

 6,001   $ 

 123,210  
 530  
 129,741   $ 

  $ 

Note 7 - Derivative Instruments and Hedging Activities 

Estimated 
      Fair Value 
 6,000 
 123,192 
 530 
 129,722 

 (1)  $ 
 (18) 
 —  
 (19)  $ 

In  October 2018,  the  Company  executed  two  commodity  swap  contracts  with  TotalEnergies  Gas &  Power  North 
America,  an  affiliate  of  TotalEnergies  and  THUSA  (as  defined  in  Notes 12),  for  a  total  of  5.0  million  diesel  gallons 
annually from April 1, 2019 to June 30, 2024. These commodity swap contracts are used to manage diesel price fluctuation 
risks related to the natural gas fuel supply commitments the Company makes in its fueling agreements with fleet operators 
that participate in the Zero Now truck financing program. These contracts are not designated as accounting hedges and as 
a result, changes in the fair value of these derivative instruments are recognized in "Product revenue" in the accompanying 
consolidated statements of operations. 

The Company has entered into fueling agreements with fleet operators under the Zero Now truck financing program. 
The  fueling  agreements  contain  a  pricing  feature  indexed  to  diesel,  which  the  Company  determined  to  be  embedded 

81 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
     
     
 
 
 
 
 
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

derivatives and recorded at fair value at the time of execution, with the changes in fair value of the embedded derivatives 
recognized as earnings in "Product revenue" in the accompanying consolidated statements of operations. 

Derivatives and embedded derivatives as of December 31, 2020 consisted of the following (in thousands): 

  Gross Amounts   Gross Amounts   Net Amount 
      Recognized 

      Presented 

Offset 

Assets: 
Commodity swaps: 

Current portion of derivative assets, related party 
Long-term portion of derivative assets, related party 

Fueling agreements: 

Prepaid expenses and other current assets 
Notes receivable and other long-term assets, net 

Total derivative assets 

Liabilities: 
Fueling agreements: 
Accrued liabilities 
Other long-term liabilities 
Total derivative liabilities 

  $ 

 1,591   $ 
 4,057  

 249  
 542  
 6,439   $ 

 —   $ 

 —  
 —  
 —   $ 

 1,591 
 4,057 

 249 
 542 
 6,439 

 283   $ 
 273  
 556   $ 

 —   $ 
 —  
 —   $ 

 283 
 273 
 556 

  $ 

  $ 

  $ 

Derivatives and embedded derivatives as of December 31, 2021 consisted of the following (in thousands): 

  Gross Amounts   Gross Amounts   Net Amount 
      Recognized 

      Presented 

Offset 

Assets: 
Fueling agreements: 

Prepaid expenses and other current assets 
Notes receivable and other long-term assets, net 

Total derivative assets 

Liabilities: 
Commodity swaps: 

Current portion of derivative liabilities, related party 
Long-term portion of derivative liabilities, related party 

Total derivative liabilities 

  $ 

  $ 

  $ 

  $ 

 2,038   $ 
 4,738  
 6,776   $ 

 —   $ 
 —  
 —   $ 

 2,038 
 4,738 
 6,776 

 1,900   $ 
 2,483  
 4,383   $ 

 —   $ 

 —   $ 

 1,900 
 2,483 
 4,383 

As of December 31, 2020 and 2021, the Company had a total volume on open commodity swap contracts of 16.9 
million and 11.9 million diesel gallons, respectively, at a weighted-average price per gallon of approximately $3.18 per 
gallon. 

The following table reflects the weighted-average price of open commodity swap contracts as of December 31, 2020 

and 2021, by year with associated volumes: 

Year 
2021 
2022 
2023 
2024 

December 31, 2020 

December 31, 2021 

Volumes 
     (Diesel Gallons)     

  Weighted-Average Price per 
Diesel Gallon 

Volumes 
     (Diesel Gallons)    

  Weighted-Average Price per
Diesel Gallon 

 5,000,000   $ 
 5,000,000   $ 
 5,000,000   $ 
 1,875,000   $ 

 3.18  
 3.18   
 3.18   
 3.18   

 —   $ 
 5,000,000   $ 
 5,000,000   $ 
 1,875,000   $ 

 — 
 3.18 
 3.18 
 3.18 

82 

 
 
 
 
 
 
 
 
 
 
 
 
 
     
    
      
      
  
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
      
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
    
      
      
  
 
 
 
 
 
 
 
 
 
 
    
      
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Note 8 —Fair Value Measurements 

The Company 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 standard, 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 standard 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 developed based on market data obtained from sources independent of the Company. Unobservable inputs 
are inputs that reflect the Company’s assumptions about the factors market participants would use in valuing the asset or 
liability 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. 

Assets and Liabilities Measured at Fair Value on a Recurring Basis 

The Company’s available-for-sale debt securities and certificate of deposits are classified within Level 2 because they 
are valued using the most recent quoted prices for identical assets in markets that are not active and quoted prices for 
similar assets in active markets. 

The Company used the income approach to value its outstanding commodity swap contracts and embedded derivatives 
in  its  fueling  agreements  under  the  Zero  Now  truck  financing  program  (see  Note 7).  Under  the  income  approach,  the 
Company used a discounted cash flow (“DCF”) model in which cash flows anticipated over the term of the contracts are 
discounted to their present value using an expected discount rate. The discount rate used for cash flows reflects the specific 
risks in spot and forward rates and credit valuation adjustments. This valuation approach is considered a Level 3 fair value 
measurement.  The  significant  unobservable  inputs  used  in  the  fair  value  measurement  of  the  Company’s  derivative 
instruments  are  Ultra-Low  Sulfur  Diesel  (“ULSD”)  forward  prices  and  differentials  from  ULSD  to  Petroleum 
Administration for Defense District (“PADD”) regions. Significant increases (decreases) in any of those inputs in isolation 
would result in a significantly lower (higher) fair value measurement. Generally, a change in the ULSD forward prices is 
accompanied by a directionally opposite but less extreme change in the ULSD-PADD differential. 

The Company estimated the fair value of its outstanding commodity swap contracts based on the following inputs as 

of December 31, 2020 and 2021: 

Significant Unobservable Inputs 

ULSD Gulf Coast Forward Curve 
Historical Differential to PADD 3 Diesel 
Historical Differential to PADD 5 Diesel 

December 31, 2020 

December 31, 2021 

      Input Range 
  $1.47 - $1.54  $ 
  $0.81 - $1.58  $ 
  $1.66 - $2.58  $ 

     Weighted Average      
1.50 
0.99 
2.01 

Input Range 
  $ 2.03 - $ 2.15   $ 
  $ .87 - $ 1.58   $ 
  $ 1.82 - $ 2.69   $ 

$2.11  
$1.03  
$2.13  

     Weighted Average 

The Company estimated the fair value of embedded derivatives in its fueling agreements under the Zero Now truck 

financing program based on the following inputs as of December 31, 2020 and 2021: 

December 31, 2020 

December 31, 2021 

Significant Unobservable Inputs 

ULSD Gulf Coast Forward Curve 
Historical Differential to PADD 3 Diesel 
Historical Differential to PADD 5 Diesel 

      Input Range 
  $1.47 - $1.54  $ 
  $0.81 - $1.58  $ 
  $1.66 - $2.58  $ 

     Weighted Average      
1.50 
0.99 
2.01 

Input Range 
  $ 2.03 - $ 2.15   $ 
  $ .87 - $ 1.58   $ 
  $ 1.82 - $ 2.69   $ 

$2.11  
$1.03  
$2.13  

     Weighted Average 

83 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

There were no transfers of assets or liabilities between Level 1, Level 2, or Level 3 of the fair value hierarchy as of 

December 31, 2020 or 2021. 

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring 

basis as of December 31, 2020 and 2021 (in thousands): 

Assets: 
Available-for-sale securities (1): 
Municipal bonds and notes 

Certificates of deposit (1) 
Commodity swap contracts (2) 
Embedded derivatives (3) 
Liabilities: 

Embedded derivatives (3) 

Assets: 
Available-for-sale securities (1): 
Municipal bonds and notes 
Zero coupon bonds 
Certificates of deposit (1) 
Embedded derivatives (3) 
Liabilities: 

Commodity swap contracts (2) 

     December 31, 2020      Level 1 

      Level 2 

      Level 3 

  $ 

 28,998   $ 
 530  
 5,648  
 791  

 —   $ 
 —  
 —  
 —  

 28,998   $ 
 530  
 —  
 —  

 — 
 — 
 5,648 
 791 

  $ 

 556   $ 

 —   $ 

 —   $ 

 556 

     December 31, 2021       Level 1 

      Level 2 

      Level 3 

  $ 

 6,000   $ 

 123,192  
 530  
 6,776  

 6,000   $ 

 —    $ 
 —   
 —   
 —   

    123,192  
 530  
 —  

 — 
 — 
 — 
 6,776 

  $ 

 4,383   $ 

 —    $ 

 —   $ 

 4,383 

(1) 

Included in “Short-term investments” in the accompanying consolidated balance sheets. See Note 6 for more information. 

(2) 

(3) 

Included in “Derivative assets, related party” and “Long-term portion of derivative assets, related party” as of December 31, 2020, and “Derivative 
liabilities, related party” and “Long-term portion of derivative liabilities, related party” as of December 31, 2021, in the accompanying consolidated 
balance sheets. See Note 7 for more information. 

Included in "Prepaid expenses and other current assets", "Notes receivable and other long-term assets, net", “Accrued liabilities” and “Other long-
term liabilities” as of December 31, 2020, and "Prepaid expenses and other current assets" and "Notes receivable and other long-term assets, net" 
as of December 31, 2021 in the accompanying consolidated balance sheets. See Note 7 for more information. 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The following table provides a reconciliation of the beginning and ending balances of items measured at fair value on 
a recurring basis as shown in the tables above that used significant unobservable inputs (Level 3), as well as the change in 
unrealized gains or losses for the periods included in earnings (in thousands): 

Balance as of December 31, 2019 
Settlements, net 
Total gain (loss) 
Balance as of December 31, 2020 

Balance as of December 31, 2020 
Settlements, net 
Total gain (loss) 
Balance as of December 31, 2021 

Change in unrealized gain (loss) for the year ended 
December 31, 2020 included in earnings 
Change in unrealized gain (loss) for the year ended 
December 31, 2021 included in earnings 

Other Financial Assets and Liabilities 

Assets: 

  Embedded 

Assets: 
Commodity 

  Liabilities: 
  Commodity 

  Liabilities:   
  Embedded    Liabilities: 
     Swap Contracts     Derivatives    Swap Contracts    Derivatives      Warrants 
 (40)
  $ 
 — 
 40 
 — 

 3,270   $ 
 (1,652) 
 4,030  
 5,648   $ 

 (81)  $ 
 —   
 (475) 
 (556)  $ 

 (164)  $ 
 56 
 108 

 — 
 68 
 791  $ 

 723  $ 

 —  $ 

  $ 

  $ 

  $ 

 5,648   $ 
 (225) 
 (5,423) 

 —   $ 

 791  $ 
 — 
 5,985 
 6,776  $ 

 —  $ 

 1,083 
 (5,466)   
 (4,383)  $ 

 (556)  $ 
 —   
 556   
 —    $ 

 — 
 — 
 — 
 — 

  $ 

 2,378   $ 

 68  $ 

 164  $ 

 (475)  $ 

 40 

  $ 

 (5,648)  $ 

 5,985  $ 

 (4,383)  $ 

 556    $ 

 — 

The  carrying  amounts  of  the  Company’s  cash,  cash  equivalents  and  restricted  cash,  receivables  and  payables 
approximate fair value due to the short-term nature of those instruments. The carrying amounts of the Company’s debt 
instruments approximated their respective fair values as of December 31, 2020 and 2021. The fair values of these debt 
instruments were estimated using a discounted cash flow analysis based on interest rates offered on loans with similar 
terms  to  borrowers  of  similar  credit  quality,  which  are  Level  3  inputs.  See  Note 12  for  more  information  about  the 
Company’s debt instruments. 

Note 9 —Other Receivables 

Other receivables as of December 31, 2020 and 2021 consisted of the following (in thousands): 

Loans to customers to finance vehicle purchases 
Accrued customer billings 
Fuel tax credits 
Other 

Total other receivables 

  $ 

  $ 

2020 

2021 

 394    $ 

 6,335   
 10,556   
 6,370   
 23,655    $ 

 419 
 4,417 
 12,684 
 6,927 
 24,447 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Note 10 —Land, Property and Equipment 

Land, property and equipment, net as of December 31, 2020 and 2021 consisted of the following (in thousands): 

Land 
LNG liquefaction plants 
Station equipment 
Trailers 
Other equipment 
Construction in progress 

Less accumulated depreciation 

Total land, property and equipment, net 

2020 

 3,476   $ 
 94,633  
 344,839  
 79,860  
 89,276  
 73,272  
 685,356  
 (394,445) 
 290,911   $ 

2021 

 3,476 
 94,633 
 354,699 
 72,783 
 93,135 
 74,963 
 693,689 
 (431,928)
 261,761 

  $ 

  $ 

Included in “Land, property and equipment, net” are capitalized software costs of $32.3 million and $33.8 million as 
of  December  31,  2020  and  2021,  respectively.  Accumulated  amortization  of  the  capitalized  software  costs  are  $28.8 
million and $30.4 million as of December 31, 2020 and 2021, respectively. 

The Company recorded amortization expense related to the capitalized software costs of $3.9 million, $2.5 million 

and $1.6 million for the years ended December 31, 2019, 2020 and 2021, respectively. 

As of December 31, 2020 and 2021, $1.7 million and $2.1 million, respectively, are included in “Accounts payable” 
and “Accrued liabilities” in the accompanying consolidated balance sheets, representing amounts related to purchases of 
property and equipment. These amounts are excluded from the accompanying consolidated statements of cash flows as 
they are non-cash investing activities. 

Note 11 —Accrued Liabilities 

Accrued liabilities as of December 31, 2020 and 2021 consisted of the following (in thousands): 

Accrued alternative fuels incentives (1) 
Accrued employee benefits 
Accrued gas and equipment purchases 
Accrued interest 
Accrued property and other taxes 
Accrued salaries and wages 
Embedded derivatives 
Other (2) 

Total accrued liabilities 

(1) 

Includes the amount of RINs, LCFS Credits and the amount of AFTC payable to third parties. 

(2)  No individual item in “Other” exceeds 5% of total current liabilities. 

  $ 

2020 
 18,175   $ 

 4,282  
 9,897  
 512  
 3,094  
 7,646  
 283  
 8,748  
 52,637   $ 

  $ 

2021 
 28,106 
 4,547 
 17,158 
 893 
 3,369 
 8,172 
 — 
 12,914 
 75,159 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Note 12 —Debt 

Debt obligations as of December 31, 2020 and 2021 consisted of the following (in thousands): 

December 31, 2020 

bp Loan 
NG Advantage debt 
SG Facility 
Other debt 
Total debt 

  Principal Balance  
  $ 

    Unamortized Debt      Balance, Net of 
Financing Costs    Financing Costs 
 50,000 
 —   $ 
 29,418 
 117  
 5,100 
 —  
 1,162 
 —  
 85,680 
 117  
 (3,592)
 (39) 
 82,088 
 78   $ 

 50,000    $ 
 29,535     
 5,100  
 1,162     
 85,797     
 (3,631)    
 82,166   $ 

Less amounts due within one year 

Total long-term debt 

  $ 

NG Advantage debt 
SG Facility 
Other debt 
Total debt 

Less amounts due within one year 

Total long-term debt 

December 31, 2021 

  Principal Balance  
 25,832  
  $ 
 9,500  
 800  
 36,132     
 (12,868) 
 23,264   $ 

    Unamortized Debt      Balance, Net of 
Financing Costs    Financing Costs 
 25,760 
 9,500 
 800 
 36,060 
 (12,845)
 23,215 

 72  
 —  
 —  
 72  
 (23) 
 49   $ 

  $ 

The following is a summary of the aggregate maturities of debt obligations for each of the annual periods subsequent 

to December 31, 2021 (in thousands): 

NG Advantage debt 
SG Facility 
Other Debt 
Total 

SG Credit Agreement 

2022 

      2023 

      2024 

      2025 

      2026 

     Thereafter   

Total 

  $   2,991   $  8,977   $  4,161   $  1,397   $  8,306   $ 

 9,500  
 377  

 —  
 262  

 —  
 161  

 —  
 —  

 —  
 —  

  $  12,868   $  9,239   $  4,322   $  1,397   $  8,306   $ 

 —   $  25,832 
 9,500 
 —  
 —  
 800 
 —   $  36,132 

On  January  2,  2019,  the  Company  entered  into  a  term  credit  agreement  (the “Credit  Agreement”)  with  Société 
Générale, a company incorporated as a société anonyme under the laws of France (“SG”). The Credit Agreement provides 
for a term loan facility (the “SG Facility”) pursuant to which the Company may obtain, subject to certain conditions, up to 
$100.0 million of loans (“SG Loans”) in support of its Zero Now truck financing program.  Under the Credit Agreement, 
the Company is permitted to use the proceeds from the SG Loans to fund the incremental cost of trucks purchased or 
financed  under  the  Zero  Now  truck  financing  program  and  related  fees  and  expenses  incurred  by  the  Company  in 
connection therewith.  On March 12, 2021, the Credit Agreement was amended to permit the Company to use up to $45.0 
million of proceeds from the SG Loans to fund certain station build costs, and up to $20.0 million to fund TotalEnergies 
JV Equity Obligations. Under the amended terms of the Credit Agreement, the Company’s ability to draw from the SG 
Facility expired on January 2, 2022. Interest on outstanding SG Loans accrues at a rate equal to LIBOR plus 1.30% per 
annum, and a commitment fee on any unused portion of the SG Facility accrues at a rate equal to 0.39% per annum. Interest 
and commitment fees are payable quarterly.  

The Company is required to make quarterly principal payments of $2.5 million beginning March 31, 2022 with any 
unpaid amount due on January 2, 2024, subject to the option to extend the maturity date for three successive terms of one 
year each. The Company is required to make mandatory prepayments under the SG Facility equal to any amounts the 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Company receives for complete or partial refunds of the incremental cost of trucks purchased or financed under the Zero 
Now program, and the Company is generally permitted to make complete or partial voluntary prepayments under the SG 
Facility  with  prior  written  notice  to  SG  but  without  premium  or  penalty.    The  Credit  Agreement  includes  certain 
representations, warranties and covenants by the Company and also provides for customary events of default which, if any 
of them occurs, would permit or require, among other things, the principal of and accrued interest on the SG Loans to 
become  or  to  be  declared  due  and  payable.  Events  of  default  under  the  Credit  Agreement  include,  among  others, 
nonpayment  of  principal  and  interest  when  due;  violation  of  covenants;  any  default  by  the  Company  (whether  or  not 
resulting  in  acceleration)  under  any  other  agreement  for  borrowed  money  in  excess  of  $20.0  million;  voluntary  or 
involuntary bankruptcy; repudiation or assignment of the Guaranty by THUSA (as defined below); or a change of control 
of the Company. 

The Credit Agreement does not include financial covenants, and the Company has not provided SG with any security 
for its obligations under the Credit Agreement.  As described below, THUSA has entered into the Guaranty to guarantee 
the Company’s payment obligations to SG under the Credit Agreement.  As of December 31, 2021, the Company had $9.5 
million outstanding on the SG Facility and no events of defaults had occurred. 

TotalEnergies Credit Support Agreement 

The Company entered into a credit support agreement with TotalEnergies Holdings USA Inc. (“THUSA”), a wholly 
owned subsidiary of TotalEnergies, on January 2, 2019, which was subsequently amended on March 12, 2021 (as amended, 
the “CSA”) in conjunction with the March 12, 2021 amendment to the Credit Agreement. Under the CSA, THUSA agreed 
to enter into a guaranty agreement (“Guaranty”) pursuant to which it has guaranteed the Company’s obligation to repay 
SG up to $100.0 million in SG Loans and interest thereon in accordance with the Credit Agreement. In consideration for 
the commitments of THUSA under the CSA, the Company is required to pay THUSA a quarterly guaranty fee at a rate 
per quarter equal to 2.5% of the average aggregate Loan amount for the preceding calendar quarter. 

Following any payment by THUSA to SG under the Guaranty, the Company would be obligated to immediately pay 
to THUSA the full amount of such payment plus interest on such amount at a rate equal to LIBOR plus 1.0%. In addition, 
the Company would be obligated to pay and reimburse THUSA for all reasonable out-of-pocket expenses it incurs in the 
performance of its services under the CSA, including all reasonable out-of-pocket attorneys’ fees and expenses incurred 
in connection with the payment to SG under the Guaranty or any enforcement or attempt to enforce any of the Company’s 
obligations  under  the  CSA.  The  CSA  includes  customary  representations  and  warranties  and  affirmative  and  negative 
covenants by the Company. In addition, upon the occurrence of a “Trigger Event” and during its continuation, THUSA 
may, among other things: elect not to guarantee additional SG Loans; declare all or any portion of the outstanding amounts 
the Company owes THUSA under the CSA to be due and payable; and exercise all other rights it may have under applicable 
law. Each of the following events constitutes a Trigger Event: the Company defaults with respect to any payment obligation 
under  the  CSA;  any  representation  or warranty  made  by  the  Company  in  the  CSA was  false,  incorrect,  incomplete  or 
misleading in any material respect when made; the Company fails to observe or perform any material covenant, obligation, 
condition or agreement in the CSA; or the Company defaults in the observance or performance of any agreement, term or 
condition contained in any other agreement with THUSA or an affiliate of THUSA. 

As security for the Company’s obligations under the CSA, on January 2, 2019, the Company entered into a pledge 
and security agreement with THUSA and delivered a collateral assignment of contracts to THUSA, pursuant to which the 
Company collaterally assigned to THUSA all fueling agreements it enters into with participants in the Zero Now truck 
financing program. In addition, on January 2, 2019, the Company entered into a lockbox agreement with THUSA and 
PlainsCapital Bank, under which the Company granted THUSA a security interest in the cash flow generated by the fueling 
agreements the Company enters into with participants in the Zero Now truck financing program. 

Until  the  occurrence  of  a  Trigger  Event  or  Fundamental  Trigger  Event  (as  described  below)  under  the  CSA,  the 
Company has the freedom to operate in the normal course and there are no restrictions on the flow of funds in and out of 
the lockbox account established pursuant to the lockbox agreement. Upon the occurrence of a Trigger Event under the 
CSA, all funds in the lockbox account will be: first, used to make scheduled debt repayments under the Credit Agreement; 

88 

CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

and second, released to the Company. Further, upon the occurrence of a “Fundamental Trigger Event” under the CSA and 
during its continuation, in addition to exercising any of the remedies available to THUSA upon the occurrence of a Trigger 
Event  as  described  above:  all  participants  in  the  Zero  Now  program  would  pay  amounts  owed  under  their  fueling 
agreements with the Company directly into the lockbox account; under a “sweep” mechanism, all cash in the lockbox 
account would be used to prepay all outstanding SG Loans under the Credit Agreement; no other disbursements from the 
lockbox account could be made without THUSA’s consent; and THUSA would retain dominion over the lockbox account 
and the funds in the account would remain as security for the Company’s payment and reimbursement obligations under 
the CSA. Each of the following events constitutes a Fundamental Trigger Event: the Company defaults in the observance 
or performance of any agreement, term or condition contained in the Credit Agreement that would constitute an event of 
default thereunder, up to or beyond any grace period provided in such agreement, unless waived by SG; the Company 
defaults in the observance or performance of any agreement, term or condition contained in any evidence of indebtedness 
other than the Credit Agreement, and the effect of such default is to cause, or permit the holders of such indebtedness to 
cause,  acceleration  of  indebtedness  in  an  aggregate  amount  for  all  such  collective  defaults  of  $20.0  million  or  more; 
voluntary and involuntary bankruptcy and insolvency events; and the occurrence of a change of control of the Company. 

The CSA will terminate following the later of: the payment in full of all of the Company’s obligations under the CSA; 
and the termination or expiration of the Guaranty following the maturity date of the last outstanding SG Loan or December 
31, 2023, whichever is earlier. 

NG Advantage Debt 

On  November  30,  2016,  NG  Advantage  entered  into  a  Loan  and  Security  Agreement  (the  “Wintrust  LSA”)  with 
Wintrust Commercial Finance (“Wintrust”), pursuant to which Wintrust agreed to lend NG Advantage $4.7 million. The 
proceeds  were  primarily  used  to  fund  the  purchases  of  CNG  trailers  and  equipment.  Interest  and  principal  is  payable 
monthly in 72 equal monthly installments at an annual rate of 5.17%. As collateral security for the prompt payment in full 
when due of NG Advantage’s obligations to Wintrust under the Wintrust LSA, NG Advantage pledged to and granted 
Wintrust  a  security  interest  in  all  of  its  right,  title  and  interest  in  the  CNG  trailers  and  equipment  purchased  with  the 
proceeds received under the Wintrust LSA. 

On  December  10,  2020,  NG  Advantage  entered  an  Amended  and  Restated  Loan  and  Security  Agreement  with 
Berkshire Bank (“Berkshire ALA”) to substitute and replace the two existing loans with Berkshire Bank dated May 12, 
2016 and January 24, 2017 (collectively, the “Original Debt”). The Berkshire ALA provides NGA a 5-year term loan of 
$14.5 million with payments of principal and interest due monthly beginning February 1, 2021 at an annual interest rate 
of 5% maturing on January 1, 2026. NG Advantage used the funds provided by the Berkshire ALA to repay in full the 
outstanding principal balance plus accrued and unpaid interest of the Original Debt, and to repay the outstanding balances 
of certain other financing obligations to unrelated lenders, Nations and Liberty. NG Advantage has pledged as collateral 
certain assets and equipment including trailers under the Berkshire ALA, and the Company has provided a limited guaranty 
of up to $7.0 million classified in “Restricted cash” on the accompanying consolidated balance sheet. As of December 31, 
2021, the Company was in compliance with the covenants under the Berkshire ALA. 

The Berkshire ALA also provides NG Advantage a $1.0 million revolving line of credit which bears interest at the 
greater of the Prime Rate or 3.00%, plus 0.25% and has a maturity date of July 31, 2022. As of December 31, 2021, NG 
Advantage had no amounts outstanding on the revolving line of credit. 

Financing Obligations 

NG  Advantage  has  entered  into  sale  and  leaseback  transactions  with  various  lessors  as  described  below.  In  each 
instance, the sale and leaseback transaction does not qualify for sale-leaseback accounting because of NG Advantage’s 
continuing  involvement  with  the  buyer-lessor  due  to  a  fixed  price  repurchase  option.  As  a  result,  the  transactions  are 
recorded under the financing method, in which the assets remain on the accompanying consolidated balance sheets and 
the proceeds from the transactions are recorded as financing liabilities. 

89 

 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

On December 18, 2017, NG Advantage entered into a sale-leaseback arrangement through a Master Lease Agreement 
(the “BoA MLA”) with Bank of America Leasing & Capital, LLC (“BoA”). Pursuant to the BoA MLA, NG Advantage 
received $2.1 million in cash for CNG trailers and simultaneously leased them back from BoA for five years commencing 
January 1, 2018 with interest and principal payable in 60 equal monthly installments at an annual rate of 4.86%. 

On March 1, 2018, NG Advantage entered into a sale-leaseback arrangement through a Master Lease Agreement (the 
“First  National  MLA”)  with  First  National  Capital,  LLC  (“First  National”).  Pursuant  to  the  First  National  MLA,  NG 
Advantage  received  $6.3  million  in  cash,  net  of  fees  and  the  first  month’s  lease  payment  for  CNG  trailers  and 
simultaneously leased them back from First National for six years commencing March 1, 2018 with interest and principal 
payable in 72 equal monthly installments at an annual rate of 9.28%. 

On December 20, 2018 (the “Closing Date”), NG Advantage entered into a purchase agreement to sell a compression 
station for a purchase price of $7.0 million to an entity whose member owners were noncontrolling interest member owners 
of  NG  Advantage.  On  the  Closing  Date  and  immediately  following  the  consummation  of  the  sale  of  the  compression 
station, NG Advantage entered into a lease agreement with the buyer of the station pursuant to which the station was leased 
back to NG Advantage for a term of five years with monthly rent payments equal to $0.1 million at an annual rate of 
12.0%. 

bp Loan 

On December 18, 2020, the Company entered a memorandum of understanding (“MOU”) with bp to create the bpJV. 
Contemporaneous with the execution of the MOU, the Company and bp executed a loan agreement whereby bp advanced 
$50.0 million (“bp Loan”) to fund capital costs and expenses incurred prior to formation of the bpJV. The bp Loan bore 
interest at the rate per annum equal to LIBOR plus 4.33%. As repayment of the bp Loan, the outstanding principal balance 
was contributed to the bpJV in April 2021 upon entering into the bp JV Agreement. See Note 4 for additional information. 

Plains Credit Facility 

On May 1, 2021, the Company entered into a Loan and Security Agreement (the “Plains LSA”) with PlainsCapital 
Bank (“Plains”), which provides the Company a $20.0 million revolving line of credit through May 1, 2022. The interest 
rate on amounts outstanding under the Plains LSA is the greater of the Prime Rate or 3.25%. As of December 31, 2021, 
no amounts were outstanding under the Plains LSA. As of December 31, 2021, the Company was in compliance with the 
covenants under the Plains LSA. 

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 is valid until cancelled and is 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. As of December 31, 2021, no amounts have been drawn under the standby letter of credit. 

Other Debt 

The Company has other debt due at various dates through 2024 bearing interest at rates up to 4.75% with a weighted-

average interest rate of 4.38% and 4.34% as of December 31, 2020 and 2021, respectively. 

Note 13 —Stockholders’ Equity 

Authorized Shares 

The  Company’s  certificate  of  incorporation  authorizes  the  issuance  of  two  classes  of  capital  stock  designated  as 
common  stock  and  preferred  stock,  each  having  $0.0001  par  value  per  share.  On  June  14,  2021,  the  Company’s 

90 

CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

stockholders approved an increase in the number of shares of Common Stock the Company is authorized to issue from 
304,000,000 to 454,000,000. As of December 31, 2021, the Company is authorized to issue 455,000,000 shares, of which 
454,000,000 shares of capital stock are designated common stock and 1,000,000 shares are designated preferred stock. 

Dividend Provisions 

The Company did not declare or pay any dividends during the years ended December 31, 2019, 2020 and 2021. 

Voting Rights 

Each holder of common stock has the right to one vote per share owned on matters presented for stockholder action. 

TotalEnergies Private Placement 

On  May 9,  2018,  the  Company  entered  into  a  stock  purchase  agreement  (the “Purchase  Agreement”)  with 
TotalEnergies Marketing Services, S.E. (“TMS”), a wholly owned subsidiary of TotalEnergies. Pursuant to the Purchase 
Agreement, the Company agreed to sell and issue, and TMS agreed to purchase, up to 50,856,296 shares of the Company’s 
common stock at a purchase price of $1.64 per share, all in a private placement (the “TotalEnergies Private Placement”). 
The purchase price per share was determined based on the volume-weighted average price for the Company’s common 
stock between March 23, 2018 (the day on which discussions began between the Company and TotalEnergies) and May 3, 
2018 (the day on which the Company agreed in principle with TotalEnergies regarding the structure and basic terms of its 
investment). As of the date of the Purchase Agreement, TotalEnergies did not hold or otherwise beneficially own any 
shares of the Company’s common stock, and TotalEnergies has agreed, until the later of May 9, 2020 or such date when 
it ceases to hold more than 5.0% of the Company’s common stock then outstanding, among other similar undertakings and 
subject to customary conditions and exceptions, to not purchase shares of the Company’s common stock or otherwise 
pursue  transactions  that would result  in  TotalEnergies beneficially owning more  than  30.0%  of  the  Company’s  equity 
securities without the approval of the Company’s board of directors. 

On June 13, 2018, the Company and TMS closed the TotalEnergies Private Placement, in which: (1) the Company 
issued  to  TMS  all  of  the  50,856,296  shares  of  its  common  stock  issuable  under  the  Purchase  Agreement,  resulting  in 
TotalEnergies beneficially holding approximately 25.0% of the outstanding shares of the Company’s common stock and 
the  largest  ownership  position  of  the  Company  as  of  September 30,  2018;  (2) TotalEnergies  paid  to  the  Company  an 
aggregate of $83.4 million in gross proceeds, which the Company has used and expects to continue to use for working 
capital and general corporate purposes, which may include executing its business plans, pursuing opportunities for further 
growth,  and  retiring  a  portion  of  its  outstanding  indebtedness;  and  (3) the  Company  and  TotalEnergies  entered  into  a 
registration rights agreement, described below. In connection with the issuance of common stock, the Company incurred 
transaction fees of $1.9 million. 

Pursuant to the Purchase Agreement, the Company and TotalEnergies also entered into a registration rights agreement 
on  June 13,  2018,  upon  the  closing  under  the  Purchase  Agreement.  Pursuant  to  the  registration  rights  agreement,  the 
Company filed a registration statement with the SEC to cover the resale of the shares issued and sold under the Purchase 
Agreement, which was declared effective on August 16, 2018, and is obligated to use its commercially reasonable efforts 
to maintain the effectiveness of such registration statement until all such shares are sold or may be sold without restriction 
under Rule 144 under the Securities Act of 1933, as amended. As of December 31, 2021, the Company was in compliance 
with all of its registration covenants set forth in the registration rights agreement. 

At-The-Market Offerings 

On May 10, 2021, the Company entered into an equity distribution agreement with Goldman Sachs & Co. LLC, as 
sales agent, to sell shares of the Company’s common stock having an aggregate offering price of up to $100.0 million in 
an  at-the-market  offering  program  (the  “May  ATM  Program”).  Through  June  3,  2021,  the  Company  sold  12,362,237 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

shares of common stock under the May ATM Program, which exhausted the May ATM Program. On June 7, 2021, the 
Company  entered  into  a  new  equity  distribution  agreement  with  Goldman  Sachs  &  Co.  LLC,  as  sales  agent,  to  sell 
additional  shares of  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, the Company sold 10,473,946 shares of common stock under the June ATM Program which exhausted the June 
ATM Program. 

For the year ended December 31, 2021, the Company issued 22,836,183 shares of 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. 

Share Repurchase Program 

On March 12, 2020, the Company’s Board of Directors approved a share repurchase program of up to $30.0 million 
(exclusive  of  fees  and  commissions)  of  the  Company’s  outstanding  common  stock  (the  “Repurchase  Program”).  On 
December 7, 2021, the Company’s 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, and it may be suspended or discontinued at any time. During the year ended December 
31, 2021, the Company repurchased 452,700 shares of its common stock under the Repurchase Program for a total cost of 
$2.9 million. As of December 31, 2021, the Company had utilized a total of $17.4 million under the Repurchase Program 
to repurchase 8,197,086 shares of common stock. The Repurchase Program does not obligate the Company to acquire any 
specific number of shares. Repurchases under the Repurchase Program may be effected from time to time through open 
market  purchases,  privately  negotiated  transactions,  structured  or  derivative  transactions,  including  accelerated  share 
repurchase  transactions,  or  other  methods  of  acquiring  shares,  in  each  case  subject  to  market  conditions,  applicable 
securities laws and other relevant factors. Repurchases may also be made under Rule 10b5-1 plans. 

Stock-Based Compensation 

The following table summarizes the compensation expense and related income tax benefit related to the Company’s 
stock-based compensation arrangements recognized in the accompanying consolidated statements of operations during the 
periods presented (in thousands): 

Stock-based compensation expense, net of $0 tax in 2019, 2020, and 2021    $ 

 3,880   $ 

 2,957   $ 

Year Ended December 31,  
2020 

2019 

2021 
 14,994 

Equity Incentive Plans 

In December 2006, the Company adopted its 2006 Equity Incentive Plan (“2006 Plan”), which became effective on 

May 24, 2007, the date the Company completed its initial public offering of common stock.  

In May 2016, the Company adopted its 2016 Performance Incentive Plan (“2016 Plan”), which became effective on 
May 26, 2016, the date of approval of the 2016 Plan by the Company’s stockholders. The 2006 Plan became unavailable 
for new awards upon the effectiveness of the 2016 Plan. Unissued awards under the 2006 Plan are not available for future 
grant under the 2016 Plan. If any outstanding award under the 2006 Plan expires or is canceled, the shares allocable to the 
unexercised portion of that award will be added to the share reserve under the 2016 Plan and will be available for grant 
under the 2016 Plan.  

In May 2020, the Company adopted its Amended and Restated 2016 Performance Incentive Plan (“Amended 2016 
Plan”), which increased the aggregate number of shares of the Company’s common stock to be delivered pursuant to all 
awards granted under the 2016 Performance Incentive Plan by an additional 17,500,000 shares, and became effective on 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

May 15, 2020, the date of approval of the Amended 2016 Plan by the Company’s stockholders.  As of December 31, 2021, 
the Company had 7,595,607 shares available for future grant under the Amended 2016 Plan. 

Service-Based Stock Options 

The  Company  has  granted  service-based  stock  options  to  key  employees  that  vest  annually  over  the  three  years 
following the date of grant at a rate of 34%, 33% and 33%, respectively, if the holder is in service to the Company at each 
vesting date. The service-based stock options granted have contractual terms of 10 years, and exercise price for the options 
granted is equal to the closing market price of the Company's common stock on the date of grant. The stock options are 
subject to the terms and conditions of the 2006 and 2016 Plans and a Notice of Grant of Stock Option and Stock Option 
Agreement. 

The following table summarizes the Company’s service-based stock option activity for the year ended December 31, 

2021: 

  Weighted 
Average 
Exercise 
Price 

Number of    
Shares 

  Weighted   

Average 

  Remaining  
  Contractual 

Term 

Aggregate 
Intrinsic 
Value 

      (in years)       (in thousands)

Options outstanding as of December 31, 2020 

Granted 
Exercised 
Forfeited or expired 

Options outstanding as of December 31, 2021 
Options exercisable as of December 31, 2021 
Options vested and expected to vest as of December 31, 2021 

 8,142,831   $ 
 6,186,260  
 (1,219,976) 
 (1,295,444) 
    11,813,671   $ 
 5,133,792   $ 
    11,813,671   $ 

 5.38   
 8.32  
 4.59  
 8.68  
 6.64  
 5.52  
 6.64  

 7.27   $ 
 4.37   $ 
 7.27   $ 

 15,409 
 12,329 
 15,409 

As of December 31, 2021, there was $25.9 million of total unrecognized compensation cost related to unvested shares 
subject to outstanding service-based stock options. That cost is expected to be expensed over a remaining weighted average 
period of approximately 2.3 years. The total fair value of shares vested during the year ended December 31, 2021 was $1.8 
million. 

The fair value of each service-based stock option granted was estimated as of the date of grant using the Black-Scholes 

option pricing model and using the following assumptions: 

Dividend yield 
Expected volatility 
Risk-free interest rate 
Expected life in years 

   57.3% to 61.5%  
   2.11% to 2.53%  

2019 
0.0% 

6.0 

Year Ended December 31,  
2020 
0.0% 
65.8% to 83.9%  
0.37% to 1.21%  
6.0 

2021 
0.0% 
76.8% to 96.8% 
0.58% to 1.31% 
5.6 to 5.8 

The volatility amounts used were estimated based on (i) the historical volatility of the Company’s common stock over 
a term equal to the estimated life of the options and on (ii) implied volatility of the Company’s traded options. The expected 
lives used were based on historical exercise experience and the Company’s anticipated exercise periods for its outstanding 
stock options. The risk-free interest rates used were based on the U.S. Treasury yield curve with terms approximating the 
expected life of the stock options at the time of grant. 

The weighted-average grant date fair value per share of service-based stock options granted during the years ended 
December 31, 2019, 2020 and 2021, were $1.28, $1.54 and $5.90, respectively. The aggregate intrinsic value of service-

93 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
  
      
  
  
  
 
 
  
  
 
 
  
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
     
     
     
  
 
 
  
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

based options exercised during the years ended December 31, 2019, 2020 and 2021 was $0.1 million, $1.8 million and 
$10.1 million, respectively. The Company recorded $2.2 million, $1.7 million and $9.9 million of stock option expense 
relating  to  service-based  stock  options  during  the years  ended  December  31,  2019,  2020  and  2021,  respectively.  The 
Company has not recorded any tax benefit related to its service-based stock option expense. 

Performance-Based Stock Options 

The Company has granted 1,640,000 performance-based stock options to certain executives and key employees during 
2021. The options granted vest in multiple tranches in which vesting of each tranche is contingent upon securing a defined 
RNG production volume following the date of grant, if the holder is in service to the Company upon the achievement of 
such performance hurdles. The performance-based stock options have contractual terms of 10 years, and the exercise price 
for the options granted is equal to the closing market price of the Company's common stock on the date of grant. The stock 
options are subject to the terms and conditions of the 2016 Plan and a Notice of Grant of Stock Option and Stock Option 
Agreement. 

The  following  table  summarizes  the  Company’s  performance-based  stock  option  activity  for  the  year  ended 

December 31, 2021: 

Options outstanding as of December 31, 2020 

Granted 
Exercised 
Forfeited or expired 

  Weighted   

Average 

  Remaining  
  Contractual  

Term 

Aggregate 
Intrinsic 
Value 

(in years)       (in thousands)

Weighted 
Average 
Exercise 
Price 

 6.77  

  Number of    

Shares 

 —  
 1,640,000  
 —  
 —  

Options outstanding as of December 31, 2021 
Options exercisable as of December 31, 2021 

 1,640,000   $ 
 —   $ 

 6.77  
 —  

 9.94   $ 
 —   $ 

 — 
 — 

As of December 31, 2021, there was $6.6 million of total unrecognized compensation cost related to unvested shares 
subject to outstanding performance-based stock options. Compensation cost for the performance-based stock options is 
recognized  when  attainment  of  the  performance  hurdles  is  determined  to  be  probable  and  over  a  period  in  which  the 
Company estimates the performance hurdles will be achieved. No vesting occurred during the year ended December 31, 
2021. 

The fair value of each performance-based stock option granted was estimated as of the date of grant using the Black-

Scholes option pricing model and using the following assumptions: 

Dividend yield 
Expected volatility 
Risk-free interest rate 
Expected life in years 

Year Ended  
December 31,  
2021 
0.0% 
77.1% 
1.36% 
6.2 

The volatility amount used was estimated based on (i) the historical volatility of the Company’s common stock over 
a term equal to the estimated life of the options and on (ii) implied volatility of the Company’s traded options. The expected 
life used was based on historical exercise experience and the Company’s anticipated exercise period for its outstanding 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

performance-based stock options. The risk-free interest rate used was based on the U.S. Treasury yield curve with terms 
approximating the expected life of the stock options at the time of grant. 

The  weighted-average  grant  date  fair  value  per  share  of  performance-based  stock  options  granted  during  the year 
ended December 31, 2021, was $4.58. There were no performance-based stock options exercised during the year ended 
December 31, 2021. The Company recognizes the grant date fair value of the options that are probable of being earned 
over  the  estimated  performance  period.  Compensation  cost  on  performance-based  stock  options  was  $1.0  million  for 
the year ended December 31, 2021. The Company has not recorded any tax benefit related to its performance-based stock 
option expense. 

Market-Based Stock Options 

The Company has granted 3,700,000 market-based stock options to select executives and employees during 2021. 
Market-based stock options vest if (i) the closing price of the Company’s common stock equals or exceeds $14.00 for 
twenty consecutive trading days, representing 207% of the closing market price of the Company’s common stock on the 
option grant date (the “Stock Price Condition”) and (ii) the holder is employed by the Company at the time the Stock Price 
Condition is satisfied. The market-based stock options have contractual terms of 10 years, and the exercise price for the 
options granted is equal to the closing market price of the Company's common stock on the date of grant. The stock options 
are  subject  to  the  terms  and  conditions  of  the  2016  Plan  and  a  Notice  of  Grant  of  Stock  Option  and  Stock  Option 
Agreement. 

The following table summarizes the Company’s market-based stock option activity for the year ended December 31, 

2021: 

Options outstanding as of December 31, 2020 

Granted 
Exercised 
Forfeited or expired 

  Weighted   

Average 

  Remaining  
  Contractual  

Term 

Aggregate 
Intrinsic 
Value 

(in years)       (in thousands)

Weighted 
Average 
Exercise 
Price 

 6.77  

  Number of    

Shares 

 —  
 3,700,000  
 —  
 —  

Options outstanding as of December 31, 2021 
Options exercisable as of December 31, 2021 

 3,700,000   $ 
 —   $ 

 6.77  
 —  

 9.94   $ 
 —   $ 

 — 
 — 

As of December 31, 2021, there was $17.8 million of total unrecognized compensation cost related to unvested shares 
subject to outstanding market-based stock options. That cost is expected to be expensed over a remaining weighted average 
period of approximately 6.8 years. No vesting occurred during the year ended December 31, 2021. 

95 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
  
 
 
    
 
  
  
  
 
 
  
  
 
 
 
  
  
 
 
 
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The fair value of each market-based stock option granted was estimated on the date of grant using the Monte Carlo 
simulation  model.  The  Monte  Carlo  simulation  method  is  subject  to  variability  as  certain  assumptions  must  be  made, 
including the derived service period, which is estimated based on likely future stock price performance and volatility of 
the Company’s common stock price. The fair value of each market-based stock option granted was estimated using the 
following assumptions: 

Dividend yield 
Expected volatility 
Risk-free interest rate 
Expected life in years 

Year Ended  
December 31,  
2021 
0.0% 
67.8% 
1.5% 
10.0 

The volatility amount used was based on the historical volatility of the Company’s common stock over a term equal 
to the estimated life of the options. The risk-free interest rate used was based on the U.S. Treasury yield curve with terms 
approximating  the  expected  life  of  the  stock  options  at  the  time  of  grant.  The  expected  life  used  was  based  on  the 
Company’s anticipated exercise period for its outstanding market-based stock options as the simulation was run from the 
valuation date through the end of the contractual life of the options using weekly time steps. 

The weighted-average grant date fair value per share of market-based stock options granted during the year ended 
December 31, 2021, was $4.87. There were no market-based stock options exercised during the year ended December 31, 
2021. The Company recorded $0.2 million of compensation cost relating to market-based stock options during the year 
ended December 31, 2021. The Company has not recorded any tax benefit related to its market-based stock option expense. 

Service-Based Restricted Stock Units 

The Company has granted service-based restricted stock units (“Service-Based RSUs”) to key employees that vest 
annually over the three years following the date of grant at a rate of 34%, 33% and 33%, respectively, if the holder is in 
service to the Company at each vesting date. The Service-Based RSUs are subject to the terms and conditions of the 2016 
Plan and a Notice of Grant of Restricted Stock Unit and Restricted Stock Unit Agreement. 

The following table summarizes the Company’s Service-Based RSU activity for the year ended December 31, 2021: 

RSU outstanding and unvested as of December 31, 2020 

Granted 
Vested 
Forfeited or expired 

RSU outstanding and unvested as of December 31, 2021 

Number of 
Shares 

 978,716  
 894,344  
 (722,193) 
 (23,925) 
 1,126,942  

$ 

$ 

Weighted 
Average 
Fair Value at 
Grant Date 

 1.71 
 10.24 
 2.54 
 6.86 
 8.08 

The weighted average grant-date fair value of RSUs granted during the years ended December 31, 2020 and 2021 was 

$2.56 and $10.24, respectively.  

As of December 31, 2021, there was $6.2 million of total unrecognized compensation cost related to unvested shares 
subject  to  outstanding  Service-Based  RSUs.  That  cost  is  expected  to  be  expensed  over  a  remaining  weighted-average 
period of approximately 1.8 years. 

96 

 
 
 
 
 
 
 
 
     
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
  
  
  
  
  
  
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The Company recorded $1.5 million, $1.0 million and $3.9 million of expense during the years ended December 31, 
2019, 2020 and 2021, respectively, related to the Service-Based RSUs. The Company has not recorded any tax benefit 
related to its Service-Based RSU expense. 

Employee Stock Purchase Plan 

On May 7, 2013, the Company adopted an employee stock purchase plan (the “ESPP”), pursuant to which eligible 
employees may purchase shares of the Company’s common stock at 85% of the fair market value of the common stock on 
the last trading day of two consecutive, non-concurrent offering periods each year. The Company has reserved 2,500,000 
shares of its common stock for issuance under the ESPP, and the first offering period under the ESPP commenced on 
September 1, 2013. 

The Company recorded $0.0 million of expense during the years ended December 31, 2019 and 2020 and $0.1 million 
of expense during the year ended December 31, 2021 related to the ESPP. The Company has not recorded any tax benefit 
related to its ESPP expense. As of December 31, 2021, the Company had issued an aggregate of 669,915 shares pursuant 
to the ESPP. 

Amazon Warrant 

On April 16, 2021, the Company 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,  the  Company  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 the Company’s common stock at an exercise price of $13.49 per share, which 
was a 21.3% premium to the $11.12 closing price of the 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  $500.0  million,  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 of gallons or gas 
sold.  

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

As a result of the issuance of additional shares of common stock under the ATM Programs and in accordance with 
the terms of the warrant, on June 14, 2021, the number of shares of the Company’s 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.  

Amazon Holdings may not exercise the Amazon Warrant to the extent such exercise would cause Amazon Holdings 
to beneficially own more than 4.999% of the number of shares of Common Stock outstanding immediately after giving 
effect to such exercise (excluding any unvested portion of the Amazon Warrant) (the “Beneficial Ownership Limitation”). 
Amazon Holdings may, however, waive or modify the Beneficial Ownership Limitation by providing written notice to the 
Company sixty-one (61) days before such waiver or modification becomes effective (or immediately upon written notice 

97 

CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

to the Company to the extent the Company is subject to certain acquisition transactions pursuant to a tender or exchange 
offer). 

Non-cash  stock-based  sales  incentive  contra-revenue  charges  (“Amazon  Warrant  Charges”)  associated  with  the 
Amazon Warrant are recognized as the customer purchases fuel and vesting conditions become probable of being achieved, 
based on the grant date fair value of the Amazon Warrant. The fair values of the Amazon Warrant were determined as of 
the grant date in accordance with ASC 718, Compensation – Stock Compensation, using the Black-Scholes option pricing 
model and the following assumptions: 

Dividend yield 
Expected volatility 
Risk-free interest rate 
Expected term in years 

      April 16, 2021       June 14, 2021 

0.0% 
66.46% 
1.59% 
10.0 

0.0% 
67.97 
1.49% 
9.8 

The volatility amounts used were estimated based on the historical volatility of the Company’s common stock over a 
period matching the assumed term of the Amazon Warrant. The expected terms used were based on the term of the Amazon 
Warrant  at  the  date  of  issuance.  The  risk-free  interest  rates  used  were  based  on  the  U.S.  Treasury  yield  curve  for  the 
expected term of the Amazon Warrant at the date of issuance. 

The following table summarizes the Amazon Warrant activity for the year ended December 31, 2021: 

Outstanding and unvested as of December 31, 2020 

Granted 
Vested 

Outstanding and unvested as of December 31, 2021 

Warrant 
Shares 

 — 
 58,767,714 
 (14,689,935)
 44,077,779 

As a result of the immediate vesting of a portion of the Warrant Shares and Additional Warrant Shares, the Company 
recognized 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.  

During the year ended December 31, 2021, Amazon Warrant Charges in the consolidated statements of operations 
were $83.6 million. Amazon Warrant Charges during the year ended December 31, 2021 included $76.6 million from the 
immediate vesting of a portion of the Warrant Shares and Additional Warrant Shares and $7.0 million associated with fuel 
purchases. As of December 31, 2021, the Company had a customer incentive asset of $12.4 million and $22.1 million, 
classified  in  “Prepaid  expenses  and  other  current  assets”  and  “Notes  receivable  and  other  long-term  assets,  net,” 
respectively, in the accompanying consolidated balance sheets. 

Note 14 —Income Taxes 

The components of income (loss) before income taxes for the years ended December 31, 2019, 2020 and 2021 are as 

follows (in thousands): 

U.S. 
Foreign 

Total income (loss) before income taxes 

98 

2019 

2020 

2021 

  $   14,981   $  (11,216)  $  (93,117)
 (919)
  $   14,117   $  (11,220)  $  (94,036)

 (864)  

 (4) 

 
 
 
 
 
 
  
 
  
 
  
 
  
  
 
 
 
 
 
 
 
     
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
  
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The provision for income taxes for the years ended December 31, 2019, 2020 and 2021 consists of the following (in 

thousands): 

Current: 
State 
Foreign 

Total current 

Deferred: 
Federal 
State 

Total deferred 
Total expense 

2019 

2020 

2021 

  $ 

  $ 

 116   $ 
 4  
 120  

 293  
 445  
 738  
 858   $ 

 80   $ 

 109  
 189  

 48  
 72  
 120  
 309   $ 

 54 
 (4)
 50 

 18 
 51 
 69 
 119 

Income tax expense (benefit) for the years ended December 31, 2019, 2020 and 2021 computed using the federal 

income tax rate of 21% as of December 31, 2019, 2020 and 2021 consists of the following (in thousands): 

Computed expected tax (benefit) 
Nondeductible expenses 
Tax rate differential on foreign earnings 
Joint ventures 
Amazon warrants 
Tax credits 
Other 
Change in valuation allowance 

Total tax expense 

  $ 

2020 

2021 

2019 
 2,964   $   (2,356)  $  (19,747)
 617 
 2,775  
 3,087  
 189 
 (144) 
 245  
 (2)
 (5,059) 
 3,745  
 3,707 
 —  
 —  
 (5,299)
 (4,037) 
    (10,314)  
 1,463 
 1,559  
 665  
 19,191 
 466  
 7,571  
 119 
 858   $ 

 309   $ 

  $ 

On December 20, 2019, AFTC was retroactively extended beginning January 1, 2018 through December 31, 2020. 
As a result, all AFTC revenue for vehicle fuel the Company sold in the 2018 and 2019 calendar year was recognized during 
the year ended December 31, 2019. AFTC revenues for vehicle fuel the Company sold in the 2020 and 2021 calendar year 
were recognized during the year ended December 31, 2020 and 2021, respectively. AFTC for vehicle fuel sales expired 
on December 31, 2021, and it is not known whether or when AFTC will be reinstated for vehicle fuel sales made after 
December 31, 2021. 

The Company recorded a federal tax benefit of $10.5 million, $4.2 million and $4.9 million related to the exclusion 
of AFTC associated with 2019, 2020 and 2021 fuel sales in excess of its fuel tax obligation, respectively. These amounts 
increased the Company’s deferred tax asset and the Company’s deferred tax asset valuation allowance. 

99 

 
 
 
 
 
 
 
 
 
 
 
     
     
     
  
 
     
 
    
 
  
 
  
  
  
 
  
  
  
 
  
    
  
   
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
  
  
  
 
  
  
  
 
  
  
  
 
  
 
 
 
  
  
 
  
  
  
 
  
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Deferred tax assets and liabilities result from differences between the financial statement carrying amounts and the 
tax bases of existing assets and liabilities. The tax effect of temporary differences that give rise to deferred tax assets and 
liabilities as of December 31, 2020 and 2021 are as follows (in thousands): 

2020 

2021 

Deferred tax assets: 
Accrued expenses 
Lease obligations 
Alternative minimum tax and general business credits 
Stock option expense 
Amazon warrants 
Other 
Depreciation and amortization 
Loss carryforwards 

Total deferred tax assets 
Less valuation allowance 
Net deferred tax assets 

Deferred tax liabilities: 
Right-of-use assets 
Commodity swap contracts 
Goodwill 
Investments in joint ventures and partnerships 

Total deferred tax liabilities 
Net deferred tax liabilities 

  $ 

 4,940   $ 
 6,938  
 6,233  
 6,648  
 —  
 1,545  
 1,635  
 119,708  
 147,647  
    (134,974) 
 12,673  

 5,379 
 11,388 
 6,787 
 7,214 
 16,026 
 3,167 
 2,582 
 128,514 
 181,057 
    (162,018)
 19,039 

 (6,788) 
 (1,596) 
 (2,221) 
 (2,926) 
 (13,531) 

  $ 

 (858)  $ 

 (11,266)
 (649)
 (2,534)
 (5,517)
 (19,966)
 (927)

As  of  December  31,  2021,  the  Company  had  federal,  state  and  foreign  net  operating  loss  carryforwards  of 
approximately $500.1 million, $370.9 million and $2.7 million, respectively. The Company’s federal, state and foreign 
net operating loss carryforwards will, if not utilized, expire beginning in 2026, 2022 and 2030, respectively. The Company 
also has federal tax credit carryforwards of $6.8 million that will expire beginning in 2026. Due to the change of ownership 
provisions of Internal Revenue Code Section 382, utilization of a portion of the Company’s net operating loss and tax 
credit carryforwards may be limited in future periods. 

In assessing the realizability of the net deferred tax assets, management considers whether it is more likely than not 
that some or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent 
upon the generation of future taxable income during the periods in which those temporary differences become deductible. 
Management  considers  projected  future  taxable  income  and  tax  planning  strategies  in  making  this  assessment.  As  of 
December  31,  2020  and  2021,  the  Company  provided  a  valuation  allowance  of  $135.0  million  and  $162.0  million, 
respectively,  to  reduce  the  net  deferred  tax  assets  due  to  uncertainty  surrounding  the  realizability  of  these  assets.  The 
increase in the valuation allowance for the year ended December 31, 2021 of $27.0 million was primarily attributable to 
an increase in losses without benefit. 

For  the year  ended  December  31,  2021,  the  Company  did  not  have  any  offshore  earnings  of  certain  non-U.S. 

subsidiaries which are permanently reinvested outside the United States. 

The Company does not recognize the impact of a tax position in its financial statements unless the position is more 
likely than not to be sustained, based on the technical merits of the position. The Company has unrecognized tax benefits 
of $50.6 million as of December 31, 2021 that, if recognized, would not result in a tax benefit since it would be fully offset 
with a valuation allowance. 

100 

 
 
 
 
 
 
 
 
     
     
  
 
    
 
  
 
 
 
 
  
  
 
  
  
 
 
 
 
  
  
 
 
 
 
  
  
 
  
  
 
 
  
  
 
  
   
  
  
 
 
 
 
  
  
 
  
  
 
  
  
 
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The  following  is  a  tabular  reconciliation  of  the  total  amounts  of  unrecognized  tax  benefits  for  the years  ended 

December 31, 2019, 2020 and 2021 (in thousands): 

Unrecognized tax benefit—December 31, 2019 
Gross increases—tax positions in current year 
Gross increases—tax positions in prior year 
Unrecognized tax benefit—December 31, 2020 
Gross increases—tax positions in current year 
Gross increases—tax positions in prior year 
Gross decreases—tax positions in prior year 
Unrecognized tax benefit—December 31, 2021 

     $ 

$ 

 41,475 
 2,954 
 870 
 45,299 
 3,508 
 2,142 
 (364)
 50,585 

The  increase  in  the  Company’s  unrecognized  tax  benefits  in  the years  ended  December  31,  2020  is  primarily 
attributable to the portion of AFTC offset by the fuel tax the Company collected from its customers. The increase in the 
Company’s unrecognized tax benefits in the years ended December 31, 2021 is primarily attributable to the warrants issued 
to its customer and the portion of AFTC offset by the fuel tax the Company collected from its customers. 

ASC 740, Income Taxes, requires the Company to accrue interest and penalties where there is an underpayment of 
taxes based on the Company’s best estimate of the amount ultimately to be paid. The Company’s policy is to recognize 
interest  accrued  related  to  unrecognized  tax  benefits  and  penalties  as  income  tax  expense.  The  Company  recognized 
interest and penalties related to uncertain tax positions of $0.0 million for each of the years ended December 31, 2019, 
2020 and 2021. 

The Company is subject to taxation in the United States and various states and foreign jurisdictions. The Company’s 
tax years for 2018 through 2021 are subject to examination by various tax authorities. Although the Company is no longer 
subject to U.S. examination for years before 2018, and for state tax examinations for years before 2017, taxing authorities 
can adjust the net operating losses that arose in earlier years if and when the net operating losses reduce future income. In 
addition, the Company is required to indemnify SAFE&CEC S.r.l. for taxes that are imposed on CEC for pre-contribution 
tax periods. 

A number of years may elapse before an uncertain tax position is finally resolved. It is often difficult to predict the 
final outcome or the timing of resolution of an uncertain tax position, but the Company believes that its reserves for income 
taxes reflect the most probable outcomes. The Company adjusts the reserve, as well as the related interest and penalties, 
in light of changing facts and circumstances. The amount of penalties accrued is immaterial. Settlement of any particular 
position would usually require the use of cash and result in the reduction of the related reserve, or there could be a change 
in the amount of the Company’s net operating loss. The resolution of a matter would be recognized as an adjustment to 
the  provision  for  income  taxes  at  the  effective  tax  rate  in  the  period  of  resolution.  The  Company  does  not  expect  a 
significant increase or decrease in its uncertain tax positions within the next twelve months. 

Note 15 —Commitments and Contingencies 

Environmental Matters 

The Company is subject to federal, state, local and foreign environmental laws and regulations. The Company does 
not  anticipate  any  expenditures  to  comply  with  such  laws  and  regulations  that  would  have  a  material  impact  on  the 
Company’s consolidated financial position, results of operations or liquidity. The Company believes that its operations 
comply, in all material respects, with applicable federal, state, local and foreign environmental laws and regulations. 

101 

 
 
 
 
  
 
 
 
  
 
  
 
 
 
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Litigation, Claims and Contingencies 

The Company may become party to various legal actions that arise in the ordinary course of its business. The Company 
is  also  subject  to  audit  by  tax  and  other  authorities  for  varying  periods  in  various  federal,  state,  local  and  foreign 
jurisdictions, and disputes may arise during the course of these audits. It is impossible to determine the ultimate liabilities 
that the Company may incur resulting from any of these lawsuits, claims, proceedings, audits, commitments, contingencies 
and related matters or the timing of these liabilities, if any. If these matters were to ultimately be resolved unfavorably, it 
is possible that such an outcome could have a material adverse effect upon the Company’s consolidated financial position, 
results of operations, or liquidity. The Company does not, however, anticipate such an outcome and it believes the ultimate 
resolution of these matters will not have a material adverse effect on the Company’s consolidated financial position, results 
of operations, or liquidity. 

Long-Term Take-or-Pay Natural Gas Purchase Contracts 

The Company has entered into one long-term CNG supply contract to purchase CNG, on a take-or-pay basis, that 
expires in June 2022. As of December 31, 2021, the fixed commitments under this contract totaled approximately $0.1 
million for the year ending December 31, 2022. 

The Company has entered into quarterly fixed price natural gas purchase contracts with take-or-pay commitments 
extending  through  June  2023.  As  of  December  31,  2021,  the  fixed  commitments  under  these  contracts  totaled 
approximately $1.2 million for each of the years ending December 31, 2022 and 2023. 

Long-Term Natural Gas Supply Contract 

In June 2017, the Company’s subsidiary, NG Advantage, entered into an arrangement with bp for the supply, sale and 
transportation of CNG over a five-year period starting in December 2018 and expiring February 2022 (see Note 4). The 
arrangement is customary and ordinary course. As of December 31, 2021, the commitments for the specified volume under 
this contract were estimated to be approximately $1.1 million for the year ending December 31, 2022. 

bpJV Capital Call Contribution 

In December 2021, the bpJV authorized a capital call in the amount of $143.2 million with bp and the Company each 
required to contribute $71.6 million. Proceeds from the bpJV Capital Call will be used to fund working capital needs and 
to fund RNG production facility projects undertaken by the bpJV. As of December 31, 2021, the Company has paid $20.0 
million related to the bpJV Capital Call. The remaining contribution balance of $51.6 million will be paid on or prior to 
June 30, 2022. 

Note 16 —Leases 

The Company’s operating leases are comprised of real estate for fueling stations, office spaces, warehouses, a LNG 

liquefaction plant, and office equipment, and its finance leases are comprised of vehicles. 

NG Advantage has provided residual value guarantees on leases of certain vehicles aggregating $1.0 million to the 
lessors. NG Advantage expects to owe these amounts in full and therefore they have been included in the measurement of 
the lease liabilities and ROU assets. 

Certain of the Company’s real estate leases contain variable lease payments, including payments based on a change 
in the index or gasoline gallon equivalents of natural gas dispensed at fueling stations. These variable lease payments 
cannot be determined at the commencement of the lease, are not included in the ROU assets and lease liabilities, and are 
recorded as a period expense when incurred. 

102 

CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Lessee Accounting 

As of December 31, 2020 and 2021, the Company’s finance and operating lease asset and liability balances were as 

follows (in thousands): 

Finance leases: 
Land, property and equipment, gross 
Accumulated depreciation 

Land, property and equipment, net 

Current portion of finance lease obligations 
Long-term portion of finance lease obligations 

Total finance lease liabilities 

Operating leases: 
Operating lease right-of-use assets 

Current portion of operating lease obligations 
Long-term portion of operating lease obligations 

Total operating lease liabilities 

2020 

2021 

  $ 

  $ 

  $ 

  $ 

 4,915   $ 
 (1,905) 
 3,010   $ 

 840   $ 

 2,552  
 3,392   $ 

 5,617 
 (2,646)
 2,971 

 846 
 2,427 
 3,273 

  $ 

 25,967   $ 

 42,537 

  $ 

  $ 

 2,822   $ 
 23,698  
 26,520   $ 

 3,551 
 39,431 
 42,982 

The components of lease expense for finance and operating leases consisted of the following (in thousands): 

Finance leases: 
Depreciation on assets under finance leases 
Interest on lease liabilities 

Total finance leases expense 

Operating leases: 
Lease expense 
Lease expense on short-term leases 
Variable lease expense 
Sublease income 

Total operating leases expense 

Year Ended December 31,  
2021 
2020 

 733   $ 
 185  
 918   $ 

 809 
 181 
 990 

 6,287   $ 
 847  
 2,593  
 (736) 
 8,991   $ 

 7,313 
 205 
 3,321 
 (726)
 10,113 

  $ 

  $ 

  $ 

  $ 

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CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Supplemental information on finance and operating leases is as follows (dollars in thousands): 

Operating cash outflows from finance leases 
Operating cash outflows from operating leases 
Financing cash outflows from finance leases 

Assets obtained in exchange for new finance lease liabilities (1) 
ROU assets obtained in exchange for operating lease liabilities (1) 

Weighted-average remaining lease term - finance leases 
Weighted-average remaining lease term - operating leases 

Weighted-average discount rate - finance leases 
Weighted-average discount rate - operating leases 

Year Ended December 31,  
2021 
2020 

 185   $ 
 5,503   $ 
 1,242   $ 

 181 
 5,804 
 789 

 1,337   $ 
 96   $ 

 879 
 19,515 

  $ 
  $ 
  $ 

  $ 
  $ 

      December 31,         December 31,  

2020 

3.59 years   
10.81 years   

2021 
2.87 years 
12.31 years 

5.27%   
8.40%   

5.22% 
7.55% 

(1)  These  amounts  are  excluded  from  the  accompanying  consolidated  statements  of  cash  flows  as  they  are  non-cash  investing,  operating  and/or 

financing activities. 

The  following  schedule  represents  the  Company’s  maturities  of  finance  and  operating  lease  liabilities  as  of 

December 31, 2021 (in thousands): 

Fiscal year: 
2022 
2023 
2024 
2025 
2026 
Thereafter 

Total minimum lease payments 
Less amount representing interest 
Present value of lease liabilities 

Lessor Accounting 

      Finance Leases       Operating Leases

  $ 

  $ 

 990   $ 
 893  
 1,305  
 390  
 —  
 —  
 3,578  
 (305) 
 3,273   $ 

 6,148 
 6,037 
 6,087 
 6,028 
 5,840 
 38,033 
 68,173 
 (25,191)
 42,982 

The  Company  leases  fueling  station  equipment  to  customers  that  contain  an  option  to  extend  and  an  end-of-term 
purchase option. Receivables from these leases are accounted for as finance leases, specifically sales-type leases, and are 
included in “Other receivables” and “Notes receivable and other long-term assets, net” in the accompanying consolidated 
balance sheets. 

The Company recognizes the net investment in the lease as the sum of the lease receivable and the unguaranteed 

residual value, both of which are measured at the present value using the interest rate implicit in the lease. 

During  the  years  ended  December  31,  2020  and  2021,  the  Company  recognized  $0.5  million  and  $0.4  million, 

respectively, in “Interest income” on its lease receivables. 

104 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
  
  
 
 
 
 
 
 
 
 
 
  
 
  
 
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

The  following  schedule  represents  the  Company’s  maturities  of  lease  receivables  as  of  December  31,  2021  (in 

thousands): 

Fiscal year: 
2022 
2023 
2024 
2025 
2026 
Thereafter 

Total minimum lease payments 
Less amount representing interest 

Present value of lease receivables 

Note 17 – 401(k) Plan 

$ 

$ 

 1,182 
 962 
 962 
 962 
 1,034 
 2,339 
 7,441 
 (1,908)
 5,533 

The Company has established a savings plan (“Savings Plan”) which is qualified under Section 401(k) of the Internal 
Revenue Code. Eligible employees may elect to make contributions to the Savings Plan through salary deferrals of up to 
90%  of  their  base  pay,  subject  to  Internal  Revenue  Code  limitations.  The  Company  may  also  make  discretionary 
contributions to the Savings Plans, subject to limitations. For each of the years ended December 31, 2019, 2020 and 2021 
the  Company  contributed  approximately  $1.3  million,  $1.5  million  and  $1.6  million,  respectively,  of  matching 
contributions to the Savings Plan. 

Note 18 – Net Income (Loss) Per Share 

The  following  table  sets  forth  the  computations  of  basic  and  diluted  earnings  per  share  for  the  years  ended 

December 31, 2019, 2020 and 2021 (in thousands, except share and per share amounts): 

Net income (loss) attributable to Clean Energy Fuels Corp. 

   $

2019 
 20,421    $

2020 

 (9,864)   $

2021 
 (93,146)

Weighted-average common shares outstanding 
Dilutive effect of potential common shares from restricted stock 
units, stock options and stock warrants 
Weighted-average common shares outstanding - diluted 
Basic income (loss) per share 
Diluted income (loss) per share 

   204,573,287  

   200,657,912  

   213,118,694 

 1,414,222  
   205,987,509  

 —  
   200,657,912  

  $
  $

 0.10   $
 0.10   $

 (0.05)  $
 (0.05)  $

 — 
   213,118,694 
 (0.44)
 (0.44)

The  following  potentially  dilutive  securities  have  been  excluded  from  the  diluted  net  income  (loss)  per  share 
calculations because their effect would have been antidilutive. Although these securities were antidilutive for these periods, 
they could be dilutive in future periods. 

(in shares) 
Stock options 
Convertibles notes 
Restricted stock units 
Amazon warrant shares 

Total 

2019 
 7,652,463   
 3,164,557   
 —   
 —  
 10,817,020  

2020 

2021 

 8,142,831     17,153,671 
 1,112,783   
 — 
 1,126,942 
 978,716  
 58,767,714 
 —  
 77,048,327 
 10,234,330  

105 

 
 
 
 
 
      
  
 
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
     
 
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
    
    
  
  
  
 
 
 
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

Note 19 —Related Party Transactions 

TotalEnergies S.E. 

During the years ended December 31, 2020 and 2021, the Company recognized revenue of $7.8 million and $4.9 
million, respectively, related to RINs and LNG sold to TotalEnergies and its affiliates in the ordinary course of business, 
AFTC credits, and settlements on commodity swap contracts (Note 7). As of December 31, 2020 and 2021, the Company 
had receivables from TotalEnergies of $0.9 million and $1.4 million, respectively. 

During the years ended December 31, 2020 and 2021, the Company paid TotalEnergies $0.7 million and $2.0 million, 
respectively, for expenses incurred in the ordinary course of business, settlements on commodity swap contracts (Note 7), 
and the guaranty fee under the CSA (Note 12). As of December 31, 2020 and 2021, the amount due to TotalEnergies was 
$0.0 million and $0.1 million, respectively. 

SAFE&CEC S.r.l 

During  the  years  ended  December  31,  2020  and  2021,  the  Company  received  $1.2  million  and  $0.2  million, 
respectively, from SAFE&CEC S.r.l. in the ordinary course of business. As of December 31, 2020, the Company had 
receivables from SAFE&CEC S.r.l. of $0.2 million. Receivables balance as of December 31, 2021 was immaterial. 

During the years ended December 31, 2020 and 2021, the Company paid SAFE&CEC S.r.l. $4.8 million and $9.6 
million, respectively, for parts and equipment in the ordinary course of business. As of December 31, 2020 and 2021, the 
Company had payables to SAFE&CEC S.r.l. of $0.9 million and $0.2 million, respectively. 

TotalEnergies JV and bpJV 

Pursuant  to  LLC  agreements  under  the  TotalEnergies  JV  and  the  bpJV,  the  Company  manages  the  day-to-day 
operations of RNG projects under the joint ventures in exchange for management fees. During the year ended December 
31, 2021, the Company recognized management fee revenue of $0.4 million. As of December 31, 2021, the Company had 
receivables from the joint ventures of $0.4 million. 

Note 20 —Reportable Segments and Geographic Information 

Disclosures are required for certain information regarding operating segments, products and services, geographic areas 
of  operation  and  major  customers.  Segment  reporting  is  based  on  the  “management  approach,”  which  assesses,  how 
management organizes the Company’s operating segments for which separate financial information is (1) available and 
(2) evaluated regularly by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources and in 
assessing performance. The Company’s CODM is its Chief Executive Officer. 

The Company operates in a single segment to supply natural gas. In making operating decisions, the CODM primarily 
considers consolidated financial information, accompanied by volumes delivered information. The assessment of operating 
results and the allocation of resources among the components of the business are made by the CODM and are based on 
gross margins and volumes delivered by market sector and volume type. Contracts are evaluated based on the economics 
of a mix of products and services for a customer. 

The table below presents the Company’s revenue, operating income (loss) and long-lived assets by geographic area 
(in thousands). Several of the Company’s functions, including marketing, engineering, and finance are performed at the 
corporate  level.  As  a  result,  significant  interdependence  and  overlap  exists  among  the  Company’s  geographic  areas. 
Geographic revenue data reflect internal allocations and are therefore subject to certain assumptions and the Company’s 
methodology. Accordingly, revenue, operating income (loss), and long-lived assets shown for each geographic area may 
not be the amounts that would have been reported if the geographic areas were independent of one another. Revenue by 

106 

CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

geographic area is categorized based on where services are rendered and finished goods are sold. Operating income (loss) 
by geographic area is categorized based on the location of the entity selling the finished goods or providing the services. 
Long-lived assets by geographic are categorized based on the location of the assets. 

2019 

2020 

2021 

Revenue: 

United States 
Canada 

Total revenue 

Operating income (loss): 

United States 
Canada 

Total operating income (loss) 

Long-lived assets: 
United States 
Canada 

Total long-lived assets 

  $   338,549    $   281,546    $   252,310 
 3,336 
  $   344,065    $   291,724    $   255,646 

 10,178   

 5,516   

  $ 

  $ 

 10,805    $ 
 (877) 
 9,928    $ 

 (9,853)  $   (94,157)
 (891)
 (9,844)  $   (95,048)

 9   

  $   415,548    $   383,463    $   440,770 
 630 
  $   415,774    $   383,665    $   441,400 

 226   

 202   

The Company’s goodwill and intangible assets as of December 31, 2019, 2020 and 2021 relate to its United States 

operations, and its subsidiaries, Clean Energy Cryogenics and NG Advantage (see Note 4). 

Note 21 —Concentrations 

During  the years  ended  December  31,  2019,  2020  and  2021,  one,  three,  and  zero  suppliers,  respectively,  each 

accounted for 10% or more of the Company’s natural gas expense relating to CNG and LNG purchases.  

During the years ended December 31, 2019, 2020 and 2021, no single customer accounted for 10% or more of the 

Company’s total revenue.  

Note 22 —Subsequent Events 

NG Advantage Debt Refinancing 

In January 2022, NG Advantage entered into a second amendment to the Berkshire ALA pursuant to which Berkshire 
Bank  agreed  to  lend  NG  Advantage  $14.0  million  (the  “Berkshire  Term  Loan  2”).  The  Berkshire  Term  Loan  2  bears 
interest  at  5.00%  with  principal  and  interest  payable  in  59  equal  monthly  installments  and  a  balloon  payment  due  on 
January 31, 2027. The debt is collateralized by various trailers and station assets of NG Advantage. In connection with the 
Berkshire Term Loan 2, NG Advantage extinguished $11.1 million of existing debt obligations consisting of $10.4 million 
in cash payoffs and an application of $0.8 million in deposits held with the former lenders. 

In connection with the second amendment to the Berkshire ALA, Berkshire Bank released $7.0 million, classified in 
“Restricted  cash” on  the  accompanying  consolidated balance  sheet,  to  the  Company related  to  the  Company’s  limited 
guaranty under the Berkshire ALA. Concurrently, the Company issued an irrevocable standby letter of credit to Berkshire 
Bank for $7.0 million as collateral under the second amendment to the Berkshire ALA. The standby letter of credit is valid 
until specified release conditions are satisfied and is collateralized by the Company’s revolving line of credit, reducing the 
total amount available under the line of credit to $11.0 million. 

Stock Repurchase Activities 

Subsequent  to  December  31,  2021,  through  the  date  of  filing  of  this  Report  (the  "filing  date"),  the  Company 
repurchased 511,010 shares of its common stock under the Repurchase Program for a total cost of $3.0 million (exclusive 

107 

 
 
 
 
 
 
 
 
 
 
 
     
     
     
    
      
      
  
 
  
  
  
 
  
   
  
   
  
  
 
  
  
  
 
  
   
  
   
  
  
 
  
  
  
 
CLEAN ENERGY FUELS CORP. AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued) 

of fees and commissions) at an average price of $5.85 per share. As of the filing date, the Company had utilized a total of 
$20.4 million to repurchase shares of its common stock in the open market and had a total of $29.6 million of authorized 
funds remaining under the Repurchase Program. 

108 

Item 9.   Changes in and Disagreements with Accountants on Accounting and Financial Disclosure. 

None. 

Item 9A.   Controls and Procedures. 

Evaluation of Disclosure Controls and Procedures 

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed 
in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the 
time periods specified in the rules and forms of the SEC, and that such information is accumulated and communicated to 
our  management,  including  our  Chief  Executive  Officer  and  Chief  Financial  Officer,  as  appropriate  to  allow  timely 
decisions regarding required disclosure. 

Our management carried out an evaluation, with the participation of our Chief Executive Officer and Chief Financial 
Officer (our principal executive and principal financial officers, respectively) of the effectiveness of our disclosure controls 
and procedures as of December 31, 2021, the end of the period covered by this report. Based on this evaluation, our Chief 
Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of 
December 31, 2021. 

Changes in Internal Control Over Financial Reporting 

We regularly review and evaluate our internal control over financial reporting, and from time to time we may make 
changes  to our  processes  and  systems  to  improve  controls  or  increase  efficiencies.  Such  changes may  include,  among 
others, implementing new and more efficient systems, consolidating activities, and migrating processes. 

There  were  no  changes  in  our  internal  control  over  financial  reporting  that  occurred  during  the  quarter  ended 
December 31, 2021 that have materially affected, or are reasonably likely to materially affect, our internal control over 
financial reporting. 

Management’s Report on Internal Control Over Financial Reporting 

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as 
defined in Rule 13a-15(f) under the Exchange Act) for our Company. Our management, with the participation of our Chief 
Executive Officer and Chief Financial Officer, assessed the effectiveness of our internal control over financial reporting 
as of December 31, 2021. In making this assessment, our management used the criteria set forth by the Committee of 
Sponsoring Organizations of the Treadway Commission in Internal Control—Integrated Framework (2013). Based on 
this assessment, our management concluded that, as of December 31, 2021, our internal control over financial reporting 
was effective. Our independent registered public accounting firm, KPMG LLP, has issued an attestation report on our 
internal control over financial reporting, which is included in Item 8. “Financial Statements and Supplementary Data” of 
this report. 

Inherent Limitations of Disclosure Controls and Procedures and Internal Control Over Financial Reporting 

In  designing  our  disclosure  controls  and  procedures  and  internal  control  over  financial  reporting,  management 
recognizes  that  any  controls  and  procedures,  no  matter  how  well-designed  and  operated,  can  provide  only  reasonable 
assurance of achieving the desired control objectives. In addition, the design of our controls and procedures must reflect 
the fact that there are resource constraints, and management necessarily applies its judgment in evaluating the benefits of 
possible controls and procedures relative to their costs. Because of these inherent limitations, our disclosure and internal 
controls may not prevent or detect all instances of fraud, misstatements or other control issues. In addition, projections of 
any evaluation of the effectiveness of disclosure or internal controls to future periods are subject to risks, including, among 
others,  that  controls  may  become  inadequate  because  of  changes  in  conditions  or  that  compliance  with  policies  or 
procedures may deteriorate. 

109 

Item 9B.   Other Information. 

None.  

Item 9C.   Disclosure Regarding Foreign Jurisdictions that Prevent Inspections. 

Not applicable. 

110 

 
 
 
Item 10.   Directors, Executive Officers and Corporate Governance. 

PART III 

We have adopted a written code of ethics that applies to our employees, officers and directors, including our principal 
executive  officer,  principal  financial  officer,  principal  accounting  officer  or  controller,  or  persons  performing  similar 
functions.  A current copy of the code is posted under “Corporate Governance” on the Investor Relations section of our 
website, www.cleanenergyfuels.com.  To the extent required by applicable rules adopted by the SEC and the Nasdaq Stock 
Market LLC, we intend to disclose future amendments to certain provisions of the code, or waivers of such provisions 
granted to executive officers and directors, in this location on our website at www.cleanenergyfuels.com. 

The remaining information required by Item 10 is incorporated by reference to our definitive proxy statement for our 
2022  annual  meeting  of  stockholders  to  be  filed  with  the  SEC  within  120 days  after  the  end  of  our  fiscal year  ended 
December 31, 2021. 

Item 11.   Executive Compensation. 

The information required by Item 11 is incorporated by reference to our definitive proxy statement for our 2022 annual 
meeting of stockholders to be filed with the SEC within 120 days after the end of our fiscal year ended December 31, 
2021. 

Item 12.   Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters. 

The information required by Item 12 is incorporated by reference to our definitive proxy statement for our 2022 annual 
meeting of stockholders to be filed with the SEC within 120 days after the end of our fiscal year ended December 31, 
2021. 

Item 13.   Certain Relationships and Related Transactions, and Director Independence. 

The information required by Item 13 is incorporated by reference to our definitive proxy statement for our 2022 annual 
meeting of stockholders to be filed with the SEC within 120 days after the end of our fiscal year ended December 31, 
2021. 

Item 14.   Principal Accountant Fees and Services. 

The information required by Item 14 is incorporated by reference to our definitive proxy statement for our 2022 annual 
meeting of stockholders to be filed with the SEC within 120 days after the end of our fiscal year ended December 31, 
2021. 

111 

 
 
Item 15.   Exhibits and Financial Statement Schedules. 

(a)(1) Consolidated Financial Statements 

PART IV 

The following items are filed in Item 8. Financial Statements and Supplementary Data of this report: 

Report of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets 
Consolidated Statements of Operations 
Consolidated Statements of Comprehensive Income (Loss) 
Consolidated Statements of Stockholders’ Equity 
Consolidated Statements of Cash Flows 
Notes to Consolidated Financial Statements 

(a)(2) Financial Statement Schedules 

The financial statement schedule set forth below is filed as a part of this report. All other schedules have been omitted 

because they are not required, not applicable, or the required information is otherwise included. 

Schedule II - Valuation and Qualifying Accounts 

(In thousands) 

Balance as of December 31, 2018 
Charges (benefit) to operations 
Deductions 

Balance as of December 31, 2019 
Charges (benefit) to operations 
Deductions 

Balance as of December 31, 2020 
Charges (benefit) to operations 
Deductions 

Balance as of December 31, 2021 

(a)(3) Exhibits 

  $ 

Credit Losses  
on Accounts   
Receivables 

      Allowance for       Allowance for 
Credit Losses 
on Notes 
Receivables 
 4,163 
 931 
 (1,763)
 3,331 
 1,250 
 (476)
 4,105 
 650 
 — 
 4,755 

 1,919   $ 
 908  
 (415) 
 2,412  
 796  
 (1,873) 
 1,335  
 77  
 (207) 
 1,205   $ 

  $ 

The  information  required  by  this  Item 15(a)(3) is  set  forth  on  the  exhibit  index,  which  immediately  precedes  the 

signature page to this report and is incorporated herein by reference. 

Item 16.   Form 10-K Summary. 

We have elected not to provide summary information. 

112 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
 
EXHIBIT INDEX 

Exhibit 
Number   

Description 

3.1 

  Restated Certificate of Incorporation, as 

      Incorporated herein by reference to the following filings: 
  Form 
  Filed as Exhibit 3.1 to the Quarterly 
Report on Form 10-Q for the quarter 
ended June 30, 2018. 

  August 7, 2018 

Filed on 

amended by the Certificate of 
Amendment to the Restated Certificate 
of Incorporation of the Registrant dated 
May 28, 2010, as further amended by 
the Certificate of Amendment to the 
Restated Certificate of Incorporation of 
the Registrant dated May 8, 2014. 

3.1.1 

  Certificate of Amendment to the 

Restated Certificate of Incorporation of 
Clean Energy Fuels Corp. dated June 8, 
2018. 

  Filed as Exhibit 3.1.1 to the Quarterly 
Report on Form 10-Q for the quarter 
ended June 30, 2018. 

  August 7, 2018 

3.1.2 

  Certificate of Amendment to Restated 

  Filed as Exhibit 3.1 to the Current Report 

June 15, 2021 

Certificate of Incorporation, dated June 
14, 2021. 

on Form 8-K 

3.2 

  Amended and Restated Bylaws. 

  Filed as Exhibit 3.2 to the Current Report 

  February 23, 2011 

on Form 8-K. 

3.2.1 

  Amendment No. 1 to Amended and 

  Filed as Exhibit 3.2.1 to the Current 

  February 27, 2014 

Restated Bylaws. 

Report on Form 8-K. 

4.1 

  Specimen Common Stock Certificate. 

  Filed as Exhibit 4.1 to the Registration 
Statement on Form S-1, as amended. 

  March 27, 2007 

4.2 

  Form of Replacement Note issued by 

  Filed as Exhibit 4.9 to the Current Report 

June 18, 2013 

the Registrant. 

on Form 8-K. 

4.3* 

  Description of Clean Energy Fuels 

Corp. Capital Stock. 

4.4† 

  Warrant to Purchase Common Stock of 
Clean Energy Fuels Corp., between 
Clean Energy Fuels Corp. and 
Amazon.com NV Investment Holdings 
LLC, dated as of April 16, 2021. 

  Filed as Exhibit 4.4 to the Current Report 

  April 16, 2021 

on Form 8-K. 

10.1+ 

  Form of Indemnification Agreement. 

  Filed as Exhibit 10.4 to the Registration 
Statement on Form S-1, as amended. 

  March 27, 2007 

10.2+ 

  2006 Equity Incentive Plan—Form of 

  Filed as Exhibit 99.5 to the Registration 

  August 14, 2007 

Notice of Stock Option Grant and Stock 
Option Agreement. 

Statement on Form S-8. 

10.3*†† 

  Ground Lease dated November 3, 2006 
among the Registrant, Clean Energy 
Construction and U.S. Borax, Inc. 

113 

 
 
 
 
 
 
 
      
     
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
10.4* 

  First Amendment to Ground Lease 

dated October 28, 2008 among Clean 
Energy LNG, LLC, Clean Energy 
Construction and U.S. Borax, Inc. 

10.5+ 

  Amended and Restated 2006 Equity 

  Filed as Exhibit 10.63 to the Annual 

  March 12, 2012 

Incentive Plan. 

Filing on Form 10-K for the fiscal year 
ended 2011. 

10.6+ 

  Clean Energy Fuels Corp. Employee 

Stock Purchase Plan. 

  Filed as Exhibit Annex A to Schedule 
14A Definitive Proxy Statement. 

  March 28, 2013 

10.7+ 

  2006 Equity Incentive Plan - Form of 

Notice of Stock Option Grant. 

  Filed as Exhibit 10.104 to the Quarterly 
Report on Form 10-Q for the quarter 
ended March 31, 2015. 

  May 11, 2015 

10.8+ 

  Amended and Restated Employment 

  Filed as Exhibit 10.106 to the Current 

  December 31, 

Agreement dated December 31, 2015, 
between the Registrant and Andrew J. 
Littlefair. 

Report on Form 8-K. 

2015 

10.9+ 

  Amended and Restated Employment 

  Filed as Exhibit 10.107 to the Current 

  December 31, 

Agreement dated December 31, 2015, 
between the Registrant and Robert M. 
Vreeland. 

Report on Form 8-K. 

2015 

10.10+ 

  Amended and Restated Employment 

  Filed as Exhibit 10.108 to the Current 

  December 31, 

Agreement dated December 31, 2015, 
between the Registrant and Mitchell W. 
Pratt. 

Report on Form 8-K. 

2015 

10.11+ 

  Amended and Restated Employment 

  Filed as Exhibit 10.109 to the Current 

  December 31, 

Agreement dated December 31, 2015, 
between the Registrant and Barclay F. 
Corbus. 

Report on Form 8-K. 

2015 

10.12+ 

  Clean Energy Fuels Corp. 2016 
Performance Incentive Plan. 

  Filed as Exhibit 10.114 to the Current 

  May 27, 2016 

Report on Form 8-K. 

10.13+ 

  Clean Energy Fuels Corp. 2016 

Performance Incentive Plan-Form of 
Notice of Stock Option Grant and 
Terms and Conditions of Nonqualified 
Stock Option. 

  Filed as Exhibit 10.117 to the Quarterly 
Report on Form 10-Q for the quarter 
ended June 30, 2016. 

  August 9, 2016 

10.14+ 

  Clean Energy Fuels Corp. 2016 

Performance Incentive Plan-Form of 
Notice of Stock Unit Award and Terms 
and Conditions of Stock Unit Award. 

  Filed as Exhibit 10.118 to the Quarterly 
Report on Form 10-Q for the quarter 
ended June 30, 2016. 

  August 9, 2016 

114 

  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
10.15+ 

  Form of Option Surrender Agreement. 

  Filed as Exhibit 10.120 to the Quarterly 
Report on Form 10-Q for the quarter 
ended March 31, 2017. 

  May 4, 2017 

10.16 

  Series A Preferred Units Issuance 

Agreement dated July 14, 2017, by and 
between Clean Energy and NG 
Advantage LLC. 

  Filed as Exhibit 10.122 to the Quarterly 
Report on Form 10-Q for the quarter 
ended September 30, 2017. 

  November 2, 

2017 

10.17 

10.18 

  Stock Purchase Agreement dated May 
9, 2018, between the Registrant and 
Total Market Services, S.A. 

  Filed as Exhibit 10.125 to the Quarterly 
Report on Form 10-Q for the quarter 
ended March 31, 2018. 

  May 10, 2018 

  Voting Agreement dated May 9, 2018, 
among the Registrant, Total Market 
Services, S.A., and the directors and 
officers of the Registrant signatory. 

  Filed as Exhibit 10.126 to the Quarterly 
Report on Form 10-Q for the quarter 
ended March 31, 2018. 

  May 10, 2018 

10.19 

  Form of Registration Rights Agreement 

dated June 13, 2018, between the 
Registrant and Total Market Services, 
S.A. 

  Filed as Exhibit 10.127 to the Quarterly 
Report on Form 10-Q for the quarter 
ended March 31, 2018. 

  May 10, 2018 

10.20 

  Term Credit Agreement, dated as of 

  Filed as Exhibit 10.129 to the Annual 

  March 12, 2019 

January 2, 2019, between the Registrant 
and Société Générale. 

Report on Form 10-K for the year ended 
December 31, 2018. 

10.21 

  Credit Support Agreement, dated as of 
January 2, 2019, by and between the 
Registrant and Total Holdings USA, 
Inc. 

  Filed as Exhibit 10.130 to the Annual 

  March 12, 2019 

Report on Form 10-K for the year ended 
December 31, 2018. 

10.22 

  Amended and Restated 2016 
Performance Incentive Plan. 

  Filed as Exhibit 10.1 to the Current 

  May 18, 2020 

Report on Form 8-K. 

10.23†† 

10.24†† 

10.25†† 

  Memorandum of Understanding, dated 
December 18, 2020, between Clean 
Energy and BP Products North America 
Inc. 

  Filed as Exhibit 10.24 to the Annual 

  March 9, 2021 

Report on Form 10-K for the year ended 
December 31, 2020. 

  USD $50,000,000 Loan Agreement, 
dated December 18, 2020, between 
Clean Energy and BP Products North 
America Inc. 

  Filed as Exhibit 10.25 to the Annual 

  March 9, 2021 

Report on Form 10-K for the year ended 
December 31, 2020. 

Joint Venture Agreement, dated March 
3, 2021, between Clean Energy 
Renewable Fuels, LLC and Total 
Biogas Holdings USA, LLC. 

  Filed as Exhibit 10.26 to the Annual 

  March 9, 2021 

Report on Form 10-K for the year ended 
December 31, 2020. 

115 

  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
10.26†† 

  Limited Liability Company Agreement 
of CE Renewco, LLC between Clean 
Energy and BP Products North America 
Inc. 

  Filed as Exhibit 10.27 to the Current 

  April 15, 2021 

Report on Form 8-K. 

10.27†† 

  Transaction Agreement, between Clean 
Energy Fuels Corp. and Amazon.com, 
Inc., dated as of April 16, 2021. 

  Filed as Exhibit 10.27 to the Current 

  April 16, 2021 

Report on Form 8-K. 

21.1* 

  Subsidiaries. 

23.1* 

  Consent of Independent Registered 

Public Accounting Firm KPMG LLP. 

24.1* 

  Power of Attorney (included on the 

signature page to this report). 

31.1* 

  Certification of Andrew J. Littlefair, 

President and Chief Executive Officer, 
pursuant to Rule 13a-14(a) or 15d-14(a) 
of the Securities Exchange Act of 1934, 
as adopted pursuant to Section 302 of 
the Sarbanes- Oxley Act of 2002. 

31.2* 

  Certification of Robert M. Vreeland, 
Chief Financial Officer, pursuant to 
Rule 13a-14(a) or 15d-14(a) of the 
Securities Exchange Act of 1934, as 
adopted pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002. 

32.1** 

  Certification pursuant to 18 U.S.C. 

Section 1350, as adopted pursuant to 
Section 906 of the Sarbanes-Oxley Act 
of 2002, executed by Andrew J. 
Littlefair, President and Chief 
Executive Officer, and Robert M. 
Vreeland Chief Financial Officer. 

101 

  The following materials from the 

Registrant’s Annual Report on Form 
10-K for the year ended December 31, 
2021, formatted in iXBRL (Inline 
eXtensible Business Reporting 
Language): 

(i) Consolidated Balance Sheets; 

(ii) Consolidated Statements of 
Operations; 

(iii) Consolidated Statements of 
Comprehensive Income (Loss); 

116 

  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
(iv) Consolidated Statements of 
Stockholders’ Equity; 

(v) Consolidated Statements of Cash 
Flows; and 

(vi) Notes to Consolidated Financial 
Statements. 

104 

  Cover Page Interactive Data File 

(formatted as iXBRL and contained in 
Exhibit 101) 

+  Management contract or compensatory plan or arrangement.  

† 

Portions of this exhibit have been omitted pursuant to the grant of a request for confidential treatment and the non-
public information has been filed separately with the SEC. 

††  Certain portions of this document that constitute confidential information have been redacted in accordance with 

Item 601(b)(10) of Regulation S-K. 

* 

Filed herewith. 

**   Furnished herewith. 

117 

  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly 

caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. 

SIGNATURES 

CLEAN ENERGY FUELS CORP. 

By: 

/s/ ANDREW J. LITTLEFAIR 
Andrew J. Littlefair 
President and Chief Executive Officer 

Date:  February 24, 2022 

POWER OF ATTORNEY 

IN WITNESS WHEREOF, each person whose signature appears below constitutes and appoints Andrew J. Littlefair 
and Robert M. Vreeland as his true and lawful agent, proxy and attorney-in-fact, each acting alone, with full power of 
substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to (i) act on and sign 
any amendments to this report, with exhibits thereto and other documents in connection therewith, (ii) act on and sign such 
certificates, instruments, agreements and other documents as may be necessary or appropriate in connection therewith, and 
in each case file the same with the Securities and Exchange Commission, hereby approving, ratifying and confirming all 
that such agent, proxy and attorney-in-fact or any of his substitutes may lawfully do or cause to be done by virtue thereof. 

118 

 
 
 
 
 
 
 
 
 
 
 
Pursuant  to  the  requirements  of  the  Securities  Exchange  Act  of  1934,  this  report  has  been  signed  below  by  the 

following persons on behalf of the registrant and in the capacities and on the dates indicated. 

Signature 

Title 

Date 

/s/ ANDREW J. LITTLEFAIR 
Andrew J. Littlefair 

/s/ ROBERT M. VREELAND 
Robert M. Vreeland 

/s/ STEPHEN A. SCULLY 
Stephen A. Scully 

President, Chief Executive Officer (Principal 
Executive Officer) and Director 

February 24, 2022 

Chief Financial Officer (Principal Financial Officer 
and Principal Accounting Officer) 

February 24, 2022 

  Chairman of the Board and Director 

February 24, 2022 

/s/ LIZABETH ARDISANA 
Lizabeth Ardisana 

  Director 

/s/ JAMES C. MILLER III 
James C. Miller III 

  Director 

/s/ LORRAINE A. PASKETT 
Lorraine A. Paskett 

  Director 

/s/ KARINE BOISSY-ROUSSEAU 
Karine Boissy-Rousseau 

  Director 

/s/ KENNETH M. SOCHA 
Kenneth M. Socha 

  Director 

/s/ VINCENT C. TAORMINA 
Vincent C. Taormina 

  Director 

/s/ PARKER WEIL 
Parker Weil 

  Director 

/s/ LAURENT WOLFFSHEIM 
Laurent Wolffsheim 

  Director 

February 24, 2022 

February 24, 2022 

February 24, 2022 

February 24, 2022 

February 24, 2022 

February 24, 2022 

February 24, 2022 

February 24, 2022 

119