UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K
                                 CURRENT REPORT
                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

       Date of report (Date of earliest event reported): February 15, 2005

                            BEACON POWER CORPORATION
               (Exact Name of Registrant as Specified in Charter)

            DELAWARE                     001-16171              04-3372365
(State or Other Jurisdiction of   (Commission File Number)    (IRS Employer
         Incorporation)                                     Identification No.)

         234 BALLARDVALE STREET
            WILMINGTON, MA                                     01887
(Address of Principal Executive Offices)                     (Zip Code)

               Registrant's telephone number, including area code:
                                  978-694-9121


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[    ] Written communications  pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

[    ]  Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17
     CFR 240.14a-12)

[    ]  Pre-commencement  communications  pursuant  to Rule  14d-2(b)  under the
     Exchange Act (17 CFR 240.14d-2(b))

[    ]  Pre-commencement  communications  pursuant  to Rule  13e-4(c)  under the
     Exchange Act (17 CFR 240.13e-4(c))




                Section 1 - Registrant's Business and Operations

Item 1.01 Entry into a Material Definitive Agreement.

     On February 15, 2005, the Compensation  Committee of the Board of Directors
of Beacon Power  Corporation  (the "Company")  approved the 2004 executive bonus
achievement  levels for objectives  reached during 2004. Payment will be made in
the form of Restricted  Stock Units and will to be paid to three  executives and
to other key employees.  The right to exercise these restricted stock units will
vest quarterly during 2005, contingent upon the executive's continued employment
with the Company. The complete terms of the Restricted Stock Units are set forth
in the Restricted Stock Unit  Agreements,  a form of which is attached hereto as
Exhibit 99.1 and is incorporated herein by reference.

The following executives of the company received Restricted Stock Units:

- --------------------- -------------------------  ------------------------------
Name of Executive     Title                      Restricted Stock Units Granted
- --------------------- -------------------------  ------------------------------
F. William Capp       President and CEO                   257,391
- --------------------- -------------------------  ------------------------------
Matthew Lazarewicz    Chief Technical Officer             107,300
- --------------------- -------------------------  ------------------------------
James M. Spiezio      Chief Financial Officer             118,030
- --------------------- -------------------------  ------------------------------

Item 9.01 Financial Statements and Exhibits

         (c) Exhibits
                  99.1     Form of Restricted Stock Unit Agreement






                                    Signature

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                       BEACON POWER CORPORATION



Date:  February 17, 2005               By:/s/ James M. Spiezio
                                          --------------------
                                    Name:  James M. Spiezio
                                   Title:  Secretary and Chief Financial Officer


                                  Exhibit Index

Exhibit Number             Description
- --------------    ---------------------------------------
99.1              Form of Restricted Stock Unit Agreement