Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  CHESAPEAKE ENERGY CORP
 2. Date of Event Requiring Statement (Month/Day/Year)
04/29/2013		 3. Issuer Name and Ticker or Trading Symbol
Clean Energy Fuels Corp. [CLNE]
(Last)
(First)
(Middle)
6100 N. WESTERN AVENUE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

OKLAHOMA CITY, OK 73118		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 1,000,000
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
7.5% Convertible Promissory Notes   (1)   (2) Common Stock 9,553,224 $ 15.8 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
CHESAPEAKE ENERGY CORP
6100 N. WESTERN AVENUE
OKLAHOMA CITY, OK 73118		     X    

Signatures

Jennifer M. Grigsby, Sr. Vice President - Treasurer and Corporate Secretary 05/01/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) On July 11, 2011, Chesapeake NG Ventures Corporation ("Chesapeake"), an indirect wholly owned subsidiary of Chesapeake Energy Corporation, entered into a Loan Agreement (the "Agreement") with Clean Energy Fuels Corp. (the "Company"), whereby Chesapeake agreed to purchase from the Company up to $150 million aggregate principal amount of debt securities pursuant to the issuance of three $50,000,000 principal amount convertible promissory notes (each a "Note"). The first two Notes were issued on July 11, 2011 and July 10, 2012, respectively, and Chesapeake has agreed to purchase the third Note on June 28, 2013. The Notes are convertible into Common Stock of the Company ("Common Stock") at Chesapeake's option upon issuance and, therefore, Chesapeake is deemed to beneficially own the underlying Common Stock as of April 29, 2013.
(2) Subject to certain restrictions the Company can force conversion of each Note into Common Stock if, following the second anniversary of the issuance of a Note, the Common Stock trades at a 40% premium to the conversion price, as defined in the Agreement, for at least twenty trading days in any consecutive thirty trading day period. The entire principal balance of each Note is due and payable seven years following its issuance, and the Company may repay each Note in Common Stock or cash.

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