Filed by the Registrant  x

Filed by a Party other than the Registrant  o

Check the appropriate box:

o

Preliminary Proxy Statement

o

Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o

Definitive Proxy Statement

x

Definitive Additional Materials

o

Soliciting Material under §240.14a-12

CLEAN ENERGY FUELS CORP.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

x

No fee required.

o

Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1)

Title of each class of securities to which transaction applies:

(2)

Aggregate number of securities to which transaction applies:

(3)

Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4)

Proposed maximum aggregate value of transaction:

(5)

Total fee paid:

o

Fee paid previously with preliminary materials.

o

Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

(1)

Amount Previously Paid:

(2)

Form, Schedule or Registration Statement No.:

(3)

Filing Party:

(4)

Date Filed:

CLEAN ENERGY FUELS CORP.

Clean  Energy  Fuels  Corp.

4675  MacArthur  Court,  Suite  800

Newport  Beach,  CA  92660

Meeting Information

Meeting Type: Annual Meeting

For holders as of: April 04, 2016

Date:  May 26, 2016     Time: 9:00 AM PDT

Location:

The Island Hotel
690 Newport Center Drive
Newport Beach, CA 92660

You are receiving this communication because you hold shares in the above named company.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

Proxy Materials Available to VIEW or RECEIVE:

1. Annual Report        2. Notice & Proxy Statement

How to View Online:

Have the information that is printed in the box marked by the arrow ÚXXXX XXXX XXXX XXXX (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

1) BY INTERNET:

www.proxyvote.com

2) BY TELEPHONE:

1-800-579-1639

3) BY E-MAIL*:

sendmaterial@proxyvote.com

*  If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow ÚXXXX XXXX XXXX XXXX (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 12, 2016 to facilitate timely delivery.

Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.

Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrowÚXXXX XXXX XXXX XXXX available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items

The Board of Directors recommends you vote

FOR ALL of the following director

nominees:

1.

Election of Directors

Nominees:

01  Andrew J. Littlefair

02  Warren I. Mitchell

03  John S. Herrington

04  James C. Miller III

05  James E. O'Connor

06  Boone Pickens

07  Stephen A. Scully

08  Kenneth M. Socha

09  Vincent C. Taormina

The Board of Directors recommends you vote FOR proposals 2 and 3.

2.

Ratification of the appointment of KPMG LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2016.

3.

Approval of the Clean Energy Fuels Corp. 2016 Performance Incentive Plan.

NOTE: To transact any other business that may properly come before the Annual Meeting or any adjournment or postponement of the Annual Meeting.