SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                 SCHEDULE 13D/A
                    Under the Securities Exchange Act of 1934

                                (Amendment No. 1)


                               Energy Focus, Inc.
             ------------------------------------------------------
                                (Name of Issuer)

                    Common Stock, $0.0001 par value per share
             ------------------------------------------------------
                         (Title of Class of Securities))

                                    29268T102
             ------------------------------------------------------
                                 (CUSIP NUMBER)



                             Eleazer N. Klein, Esq.
                            Schulte Roth & Zabel LLP
                                919 Third Avenue
                               New York, NY 10022
                                 (212) 756-2000
             ------------------------------------------------------
                  (Name, address and telephone number of person
                authorized to receive notices and communications)

                                December 22, 2009
             ------------------------------------------------------
            (Date of event which requires filing of this statement))

     If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [ ].

     NOTE: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7 for other
parties to whom copies are to be sent.

                         (Continued on following pages)

                              (Page 1 of 12 Pages)

--------------------------------------------------------------------------------


     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).




CUSIP No. 29268T102                 13D/A                  Page 2 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Diker Micro-Value QP Fund, LP
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            WC
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    1,073,972 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    1,073,972 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            1,073,972 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            5.35%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            PN
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 3 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Diker Micro-Value Fund, LP
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            WC
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    1,049,920 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    1,049,920 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            1,049,920 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            5.23%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            PN
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 4 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Diker Micro & Small Cap Fund, LP
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            WC
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    564,722 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    564,722 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            564,722 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            2.81%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            PN
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 5 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Diker M&S Cap Master, Ltd.
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            WC
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Cayman Islands
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    218,494 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    218,494 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            218,494 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            1.09%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            CO
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 6 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Diker GP, LLC
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            OO
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    2,907,108 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            14.48%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            OO
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 7 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Diker Management, LLC
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            OO
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    2,907,108 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            14.48%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            IA
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 8 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Charles M. Diker
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            OO
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            United States of America
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    2,907,108 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            14.48%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            IN
--------------------------------------------------------------------------------





CUSIP No. 29268T102                 13D/A                  Page 9 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSONS

            Mark N. Diker
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
            (see instructions)
                                                                  (a)  [X]
                                                                  (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY

--------------------------------------------------------------------------------
     (4)    SOURCE OF FUNDS (see instructions)
            OO
--------------------------------------------------------------------------------
     (5)    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
            REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                       [ ]
--------------------------------------------------------------------------------
     (6)    CITIZENSHIP OR PLACE OF ORGANIZATION
            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (7)  SOLE VOTING POWER
                    -0-
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                    2,907,108 shares of Common Stock
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                    -0-
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10) SHARED DISPOSITIVE POWER
                    2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (11)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
            2,907,108 shares of Common Stock
--------------------------------------------------------------------------------
     (12)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (11) EXCLUDES CERTAIN SHARES (see instructions)     [ ]
--------------------------------------------------------------------------------
     (13)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (11)
            14.48%
--------------------------------------------------------------------------------
     (14)   TYPE OF REPORTING PERSON (see instructions)
            IN
--------------------------------------------------------------------------------




CUSIP No. 29268T102                 13D/A                  Page 10 of 12 Pages


This Amendment No. 1 (the "Amendment") amends the statement on Schedule 13D
filed on November 13, 2009 (the "Original Schedule 13D", and the Original
Schedule 13D as amended, the "Schedule 13D") relating to the common stock, par
value $0.0001 per share (the "Common Stock") of Energy Focus, Inc., a Delaware
corporation (the "Company"). Capitalized terms used herein and not otherwise
defined in this Amendment have the meanings set forth in the Original Schedule
13D. This Amendment amends Items 4, 6 and 7 as set forth below.

Item 4.     Purpose of the Transaction.

     Item 4 of the Schedule 13D is hereby amended and supplemented by the
addition of the following:


      On December 22, 2009, Diker Management entered into a letter agreement
(the "December Letter Agreement") with the Company pursuant to which Diker
Management and the Company confirmed the mechanics of the agreement under the
Letter Agreement. Pursuant to the Letter Agreement, in the event that certain
conditions were not satisfied by 45 days after October 28, 2009, Diker
Management has the right to cancel its subscription in the Rights Offering
and return the shares purchased in the Rights Offering. The conditions set
forth in the Letter Agreement were not satisfied by 45 days after October 28,
2009 and the December Letter Agreement documents the terms of the repayment and
sale of the shares purchased in the Rights Offering by Diker Management.


      A copy of the December Letter Agreement is attached hereto as Exhibit 3
and is incorporated herein by reference.

Item 6.     Contracts, Arrangements, Understandings or
            Relationships with Respect to Securities of the Issuer.

Item 6 of the Schedule 13D is hereby amended and restated as follows:

      As described in Item 4 above, on December 22, 2009, Diker Management
entered into the December Letter Agreement, attached hereto as Exhibit 3, with
the Company. Other than the Letter Agreement, the Joint Filing Agreement and the
December Letter Agreement there are no contracts, arrangements, understandings
or relationships (legal or otherwise) among the persons named in Item 2 hereof
and between such persons and any person with respect to any securities of the
Company, including but not limited to transfer or voting of any other
securities, finder's fees, joint ventures, loan or option arrangements, puts or
calls, guarantees of profits, divisions of profits or loss, or the giving or
withholding of proxies.

Item 7.     Materials to be Filed as Exhibits.

Item 7 of the Schedule 13D is hereby amended and supplemented by the addition of
the following:

      Exhibit 3: Letter Agreement dated December 22, 2009 by and between the
Company and Diker Management.




CUSIP No. 29268T102                 13D/A                  Page 11 of 12 Pages


                                   SIGNATURES

After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.


DATED:  December 23, 2009

                              DIKER GP, LLC

                              By: /s/ Mark N. Diker
                              ------------------------------
                              Name:  Mark N. Diker
                              Title: Managing Member


                              DIKER MANAGEMENT, LLC

                              By: /s/ Mark N. Diker
                              -----------------------------
                              Name:  Mark N. Diker
                              Title: Managing Member


                              DIKER MICRO-VALUE FUND, LP

                              By: Diker GP, LLC,
                              Its General Partner

                              By: /s/ Mark N. Diker
                              -----------------------------
                              Name:  Mark N. Diker
                              Title: Managing Member


                              DIKER MICRO-VALUE QP FUND, LP

                              By: Diker GP, LLC,
                              Its General Partner

                              By: /s/ Mark N. Diker
                              ------------------------------
                              Name:  Mark N. Diker
                              Title: Managing Member


                              DIKER MICRO & SMALL CAP FUND, LP

                              By: Diker GP, LLC,
                              Its General Partner

                              By: /s/ Mark N. Diker
                              ------------------------------
                              Name:  Mark N. Diker
                              Title: Managing Member




CUSIP No. 29268T102                 13D/A                  Page 12 of 12 Pages


                              DIKER M&S CAP MASTER LTD.

                              By: Diker GP, LLC,
                              Its General Partner

                              By: /s/ Mark N. Diker
                              ------------------------------
                              Name:  Mark N. Diker
                              Title: Managing Member


                              /s/ Charles M. Diker
                              ------------------------------
                              CHARLES M. DIKER


                              /s/ Mark N. Diker
                              ------------------------------
                              MARK N. DIKER