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): March 2, 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 8.01 Other Events.

     On March 3, 2005,  Beacon Power  Corporation (the  "Registrant")  announced
that it had received a letter, dated March 2, 2005, from The NASDAQ Stock Market
stating that because the closing bid price of the Registrant's  common stock had
been at $1.00 per share or greater for at least 10  consecutive  business  days,
the Registrant had regained  compliance with Marketplace  Rule  4310(c)(4).  The
full text of the press release  issued in connection  with the  announcement  is
attached as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01  Financial Statements and Exhibits.

         (c)      Exhibits

         99.1              Press release dated March 3, 2005


                                    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:  March 4, 2005                   By:/s/ James M. Spiezio
                                          --------------------
                                     Name:  James M. Spiezio
                                    Title:  Vice President and Chief Financial
                                            Officer



                                  Exhibit Index

Exhibit No.     Description

99.1            Press release dated March 3, 2005