defa14a
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934
Filed by the Registrant þ
Filed by a Party other than the Registrant o
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o   Preliminary Proxy Statement
o   Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o   Definitive Proxy Statement
þ   Definitive Additional Materials
o   Soliciting Material Pursuant to §240.14a-12
 
Orion Energy Systems, Inc.
 
(Name of Registrant as Specified In Its Charter)
 
 
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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(ORION LOGO)
IMPORTANT
ANNUAL MEETING IS SCHEDULED
FOR OCTOBER 27, 2010
PLEASE INSTRUCT YOUR BROKER TO VOTE TODAY!
October 4, 2010
Dear Fellow Shareholder:
     According to our latest records, your broker has not received your voting instructions for the important meeting of shareholders of Orion Energy Systems, Inc. to be held on October 27, 2010. Your vote is extremely important, regardless of the number of shares that you own. Please instruct your broker how to vote your shares today to avoid additional solicitation costs.
     Please use one of the following methods to promptly provide voting instructions to your broker:
     PLEASE NOTE: Voting deadline is 11:59 p.m. EST on October 26, 2010

1.   Instruct your broker by Internet: Go to the website www.proxyvote.com. Have your 12-digit control number listed on the instruction form ready and follow the online instructions. The 12-digit control number is located in the rectangular box on the right side of your voting instruction form.
 
2.   Instruct your broker by Telephone: Call toll-free 1 (800) 454-8683. Have your 12-digit control number listed on the instruction form ready and follow the simple instructions.
 
3.   Instruct your broker by Mail: Sign, date and return your instruction form in the postage-paid return envelope provided.
     For the reasons set forth in the proxy statement dated September 10, 2010 your Board of Directors unanimously recommends that you instruct your broker to vote “FOR” the items set forth in the proxy. If you need to review the material once again the material is available at: https://www.proxydocs.com/oesx. We respectfully request that you vote your shares at your earliest convenience.
     If you have any questions or need assistance, please call D.F. King & Co., Inc. toll free at 1 (800) 967-7635.
     Thank you for your cooperation and continued support.
         
  Sincerely,
 
 
  /s/ Neal R. Verfuerth    
  Neal R. Verfuerth   
  Chief Executive Officer