UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 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): May 5, 2004



                         Environmental Power Corporation
                         -------------------------------
             (Exact name of registrant as specified in its charter)


Delaware                            0-15472                  75-3117389
--------                            -------                  ----------
(State or other jurisdiction        (Commission              (IRS Employer
of incorporation)                   File Number)             Identification No.)


           One Cate Street, 4th Floor, Portsmouth, New Hampshire 03801
                    (Address of principal executive offices)


                                 (603) 431-1780
              (Registrant's telephone number, including area code)



Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.



( c) Exhibits

99   Press Release of Environmental Power Corporation ("POWR") dated May 5, 2004

Item 9. Regulation FD Disclosure

         The Press Release  attached as Exhibit 99 hereto is furnished  pursuant
to Regulation FD. It is not filed.

Cautionary Statement

         The  Private  Securities  Litigation  Reform  Act of 1995  (the  "Act")
provides a "safe  harbor" for  forward-looking  statements.  Certain  statements
contained in this press release such as statements  concerning planned projects,
statements regarding sales pipeline, backlog and revenue projections, statements
containing  the  words  "expects,"   "estimates,"   "anticipates,"   "believes,"
"projects" and variations thereof,  and other statements contained in this press
release  regarding  matters that are not  historical  facts are forward  looking
statements as such term is defined in the Act.  Because such statements  involve
risks and  uncertainties,  actual  results  may  differ  materially  from  those
expressed  or implied by such  forward-looking  statements.  Factors  that could
cause  actual  results to differ  materially  include,  but are not  limited to,
uncertainties  involving  development stage companies,  uncertainties  regarding
project financing, the lack of binding commitments and the need to negotiate and
execute  definitive  agreements for the  construction and financing of projects,
financing and cash flow requirements and uncertainties, difficulties involved in
developing  and executing on a business  plan,  difficulties  and  uncertainties
regarding acquisitions,  technological uncertainties, risks relating to managing
and integrating acquired businesses, unpredictable developments (including plant
outages and repair  requirements),  the  difficulty of estimating  construction,
development,  repair and  maintenance  costs and timeframes,  the  uncertainties
involved in estimating  insurance and implied warranty  recoveries,  if any, the
inability  to predict  the course or outcome of any  negotiations  with  parties
involved  with  Environmental  Power's  or  Microgy's  projects,   uncertainties
relating to general  economic  and industry  conditions,  the amount and rate of
growth  in  expenses,   uncertainties  relating  to  government  and  regulatory
policies,  the legal environment,  intellectual property issues, the competitive
environment in which  Environmental Power and Microgy operate and other factors,
including  those  described in the Company's  Annual Report on Form 10-K for the
year ended  December 31, 2003, as well as other filings with the  Securities and
Exchange Commission.  Readers are cautioned not to place undue reliance on these
forward-looking statements,  which speak only as of the date that they are made.
Environmental  Power  undertakes no obligation to publicly  update or revise any
forward-looking  statements,  whether  as a result  of new  information,  future
events or otherwise.



                                    SIGNATURE


         Pursuant to the  requirements of section 13 or 15 (d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.


                                                 Environmental Power Corporation
                                                 /s/ Donald A. Livingston
                                                 ------------------------
                                                 Executive Vice President