UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  June 19, 2007

CLEAN ENERGY FUELS CORP.

(Exact Name of Registrant as Specified in Charter)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o                                    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o                                    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o                                    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o                                    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01.  Regulation FD Disclosure.

Attached as Exhibit 99.1 hereto is a copy of the press release issued by Clean Energy Fuels Corp. (the “Company”) announcing that the underwriters of the Company’s initial public offering have elected to exercise in full their option to purchase an additional 1,500,000 shares of the Company’s common stock to cover over-allotments.

The information in this Item 7.01 is not intended to, and does not, constitute a representation that such information is required by Regulation FD or that the information in this Item 7.01 is material information that is not otherwise publicly available.

Item 8.01.  Other Events.

On June 19, 2007, the Company issued a press release announcing that the underwriters of the Company’s initial public offering have elected to exercise in full their option to purchase an additional 1,500,000 shares of the Company’s common stock to cover over-allotments.  A copy of the press release is attached as Exhibit 99.1 to this report and is incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d)           Exhibits

Exhibit 99.1            Press release dated June 19, 2007 regarding the exercise of the over-allotment option.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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Exhibit 99.1

3020 Old Ranch Parkway, Suite 200
Seal Beach, California 90740 USA
562.493.2804   fax: 562.546.0097
www.cleanenergyfuels.com

News Release

Clean Energy Announces Exercise of Over-Allotment Option by Underwriters

Seal Beach, California (June 19, 2007) — Clean Energy Fuels Corp. (NASDAQ: CLNE) announced today that the underwriters of the Company’s initial public offering have informed the Company that they will exercise in full their option to purchase an additional 1,500,000 shares of the Company’s common stock to cover over-allotments.  All over-allotment shares will be sold by stockholders of the Company.  The Company will not receive any proceeds from the sale, which is expected to close Friday, June 22, 2007.

W.R. Hambrecht + Co., LLC, Simmons & Company International, Susquehanna Financial Group, LLP, and NBF Securities (USA) Corp. were the underwriters of the Company’s initial public offering.

A registration statement relating to these securities was declared effective by the Securities and Exchange Commission on May 24, 2007.  Copies of the final prospectus relating to the public offering may be obtained from the prospectus department of WR Hambrecht + Co, P.O. Box 677, Berwyn, PA 19312, by telephone at 1-800-673-6476 or by going to WR Hambrecht + Co’s web site at www.wrhambrecht.com.

Clean Energy is the leading provider of natural gas for transportation in the United States and Canada, offering a comprehensive solution to enable vehicle fleets to run on natural gas as an alternative to gasoline or diesel.

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

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Contact:

Richard Wheeler, CFO
Clean Energy Fuels Corp.
(562) 493-2804

John Mills/Ina McGuinness
ICR, Inc.
(310) 954-1100

North America’s leader in clean transportation