City of Phoenix Public Transit Department
Awards Major Natural Gas Fuel Supply Contract to Clean Energy

—Agency’s 400-plus LNG Bus Fleet Projected to Require Approximately
6 Million Gasoline Gallon Equivalents of LNG Fuel Annually—

Seal Beach, CA (June 10, 2009) — Clean Energy (Nasdaq: CLNE) has been awarded a new three-year contract from the City of Phoenix Public Transit Department, AZ to supply the City’s Valley Metro Transit Fleet with liquefied natural gas (LNG) fuel to power its fleet of 400-plus LNG buses. When the new contract takes effect July 1, 2009, Clean Energy will begin delivering approximately 6 million gasoline gallon equivalents of fuel annually to three fueling sites.

James Harger, Senior Vice President and Chief Marketing Officer, Clean Energy, said, “With this new contract, the City of Phoenix Valley Metro Fleet now ranks as our largest LNG customer. Overall at transit agencies across the nation, Clean Energy supplies natural gas fuel for 4,000 buses daily.”

Harger added, “We are pleased to provide LNG fueling services to the City of Phoenix, ensuring that transit buses roll out daily to meet vital community transportation needs. Clean Energy is committed to helping reduce pollution and protect environmental quality in every community and region we serve, and we commend Valley Metro for their success at achieving these goals.” Natural gas is one of the best ways to reduce air pollution and greenhouse gas emissions because it burns cleaner than diesel fuel.

The City of Phoenix Public Transit Department is a member of Valley Metro, an organization of 14 local governments that provides or funds transit services in the greater Phoenix metropolitan and surrounding areas. Phoenix deploys the largest fleet of clean-burning LNG transit buses in the U.S. to cover its 517 square miles of area plus neighboring cities.

Clean Energy is the leading provider of natural gas (CNG and LNG) for transportation in North America. It has a broad customer base in the refuse, transit, ports, shuttle, taxi, trucking, airport and municipal fleet markets, fueling more than 15,000 vehicles at 173 strategic locations across the United States and Canada. Clean Energy owns and operates two LNG production plants, one in Willis, TX and one in Boron, CA, with combined capacity of 260,000 LNG gallons per day and designed to expand to 340,000 LNG gallons per day as demand increases. It also owns and operates a landfill gas processing facility in Dallas, TX that produces renewable biomethane gas for delivery in the nation’s gas pipeline network. Please visit www.cleanenergyfuels.com

Forward-Looking Statements
This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 that involve risks, uncertainties and assumptions, including the projected consumption of LNG fuel by the Phoenix bus fleet and the duration of Clean Energy’s supply contract with the City of Phoenix. Actual results and the timing of events could differ materially from those anticipated in these forward-looking statements as a result of several factors including actual public transportation demand in the City of Phoenix and the availability of funding for public transportation services. The forward-looking statements made herein speak only as of the date of this press release and the company undertakes no obligation to publicly update such forward-looking statements to reflect subsequent events or circumstances.

Contacts

News Media
Bruce Russell, 310/559-4955 x101
brussell@cleanenergyfuels.com

Investors
Ina McGuinness, 310/954-1100