POWER OF ATTORNEY

         Know all by these presents, that the undersigned hereby constitutes and
appoints each of Robert M. Vreeland and J. Nathan Jensen,signing singly, the
undersigned's true and lawful attorney-in-fact to:

(1) execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer, director or beneficial owner of more than ten percent of any
registered class of the securities of Clean Energy Fuels Corp., or more of its
subsidiaries (the "Company"), SEC Form ID - Uniform Application for Access Codes
to File On EDGAR;

(2) execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer, director or beneficial owner of more than ten percent of any
registered class of the securities of the Company, Forms 3, 4 and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder;

(3) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form ID or Form
3, 4 or 5 and file such form with the United States Securities and Exchange
Commission and any stock exchange or similar authority; and

(4) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
and in the best interest of, or legally required by, the undersigned.

         The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and rights
and powers herein granted. The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.

         This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

         IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 21st day of January, 2016.

                               Signature: /S/ Mitchell W. Pratt
                                          ------------------------
                               Print Name:  Mitchell W. Pratt
                               Title:       COO and Corporate Secretary