Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Jensen Scott R
   2. Issuer Name and Ticker or Trading Symbol
ORION ENERGY SYSTEMS, INC. [OESX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Accounting Officer
(Last)
(First)
(Middle)
2210 WOODLAND DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
05/23/2011
(Street)

MANITOWOC, WI 54220		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock               12,000 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Options (right to buy) $ 4.19 05/23/2011   A   15,724     (1) 05/23/2021 Common Stock 15,724 $ 0 15,724 D  
Stock Options (right to buy) $ 2.25               (2) 08/30/2014 Common Stock 7,000   7,000 D  
Stock Options (right to buy) $ 2.2               (3) 03/01/2017 Common Stock 25,000   25,000 D  
Stock Options (right to buy) $ 5.35               (4) 08/08/2018 Common Stock 16,502   16,502 D  
Stock Options (right to buy) $ 3.78               (5) 05/19/2019 Common Stock 11,759   11,759 D  
Stock Options (right to buy) $ 5.44               (6) 02/05/2020 Common Stock 100,000   100,000 D  
Stock Options (right to buy) $ 3.46               (7) 05/18/2020 Common Stock 10,329   10,329 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Jensen Scott R
2210 WOODLAND DRIVE
MANITOWOC, WI 54220		       Chief Accounting Officer  

Signatures

 /s/ Steven R. Barth, Attorney-in-Fact   05/25/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) The option will vest and become exercisable immediately only if the Issuer satisfies certain financial performance criteria relating to revenues, net income and free cash flow during the fiscal year ending March 31, 2012, and if the Issuer's stock price equals or exceeds $5.00 per share for at least 20 trading days during any 90-day period during the option's ten-year term.
(2) Grant to reporting person of option to buy shares under the 2003 Stock Option Plan. This option, granted August 30, 2004, vests as to 4,000 shares on each of March 31, 2008 and 2009, respectively.
(3) Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted March 1, 2007, vests and becomes exercisable in 20% increments on March 1, 2008, 2009, 2010, 2011 and 2012, respectively.
(4) Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted August 8, 2008, vests and becomes exercisable in 20% increments on August 8, 2009, 2010, 2011, 2012 and 2013, respectively.
(5) Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted May 19, 2009, vests and becomes exercisable in 20% increments on May 19, 2010, 2011, 2012, 2013 and 2014, respectively.
(6) Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted February 5, 2010, vests and becomes exercisable in 20% increments on February 5, 2011, 2012, 2013, 2014 and 2015, respectively.
(7) Grant to reporting person of option to buy shares under the 2004 Stock and Incentive Awards Plan. This option, granted May 18, 2010, vests and becomes exercisable in 20% increments on May 18, 2011, 2012, 2013, 2014 and 2015, respectively.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.