Clean Energy Fuels Announces Follow-On Public Offering of Up to Six Million Shares of Common Stock

June 22, 2009

SEAL BEACH, Calif., Jun 22, 2009 (BUSINESS WIRE) -- Clean Energy (Nasdaq: CLNE) today announced that it intends to offer, subject to market and other conditions, six million shares of its common stock for sale to the public. Clean Energy expects to grant the underwriters a 30-day option from the date of the final prospectus supplement to purchase up to an additional 900,000 shares of its common stock. The public offering price has not yet been determined.

Clean Energy intends to use the net proceeds from the offering, after deducting underwriting discounts and Clean Energy's estimated expenses related to the offering, for working capital and other general corporate purposes, which may include capital expenditures related to station construction activities, investment in its LNG plants and biomethane production plant or future acquisitions of natural gas fueling infrastructure, vehicle or services businesses and biomethane production assets.

Merrill Lynch & Co. is acting as sole book-running manager for the offering. Lazard Capital Markets, Janney Montgomery Scott and Craig-Hallum Capital Group are acting as co-managers.

The offering will be made under Clean Energy's effective shelf registration statement filed with the Securities and Exchange Commission (SEC). Clean Energy intends to file with the SEC a preliminary prospectus supplement for the offering to which this communication relates. Prospective investors should read the preliminary prospectus supplement and the shelf registration statement for more complete information about Clean Energy and the offering. Copies of the preliminary prospectus supplement and the accompanying prospectus and, when available, copies of the final prospectus supplement may be obtained by visiting EDGAR on the SEC's Web site at http://www.sec.gov or by contacting Merrill Lynch & Co., 4 World Financial Center, New York, NY 10080, Attention: Prospectus Department, or at 212.449.1000; Lazard Capital Markets at 212.632.6717; Janney Montgomery Scott at 617.557.2971; and Craig-Hallum Capital Group at 612.334.6357.

This press release does not constitute a solicitation of an offer to buy, or an offer to sell, shares of common stock, nor will there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification of the shares under the securities laws of any such state or jurisdiction.

About Clean Energy Fuels

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 17,200 vehicles at 184 strategic locations across the U.S. and Canada. Clean Energy owns and operates two LNG production plants, one in Willis, Texas and one in Boron, Calif., 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 that produces renewable biomethane gas for delivery in the nation's gas pipeline network.

Safe Harbor Statement

This press release contains forward-looking statements within the meaning of federal securities laws. Clean Energy cautions you that any statements contained in this press release that are not strictly historical statements constitute forward-looking statements. Such forward-looking statements include, but are not limited to, those related to: statements regarding the offering and the use of the net proceeds from the offering. These forward-looking statements are neither promises nor guarantees and involve risks and uncertainties that could cause actual results to differ materially from such forward-looking statements. Factors that could cause actual events to differ materially from those predicted in such forward-looking statements include market conditions and potential fluctuations in the price of Clean Energy's common stock. Additional factors that could cause actual events to differ from those predicted in such forward-looking statements are identified in the preliminary prospectus supplement and Clean Energy's other filings with the SEC that are incorporated by reference into the preliminary prospectus supplement, including its Annual Report on Form 10-K for the fiscal year ended December 31, 2008 and its Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2009, each of which is filed with the SEC (copies of which may be obtained at the SEC's website at: http://www.sec.gov). Readers should not place undue reliance on any such forward-looking statements, which speak only as of the date they are made. Clean Energy disclaims any obligation to publicly update or revise any such statements to reflect any change in its expectations, or in events, conditions or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those set forth in the forward-looking statements, except as required by law.

SOURCE: Clean Energy Fuels

for Clean Energy Fuels
Investors
Ina McGuinness, 310-954-1100
or
News Media
Bruce Russell, 310-559-4955, x101
brussell@cleanenergyfuels.com

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