ENVIRONMENTAL POWER CORP

FY: Dec 31 2009

FY: Dec 31 2009

Q: Sep 30 2009

Q: Jun 30 2009

Q: Mar 31 2009

FY: Dec 31 2008

FY: Dec 31 2008

Q: Sep 30 2008

Q: Jun 30 2008

Q: Mar 31 2008

FY: Dec 31 2007

Q: Sep 30 2007

Q: Jun 30 2007

Q: Mar 31 2007

FY: Dec 31 2006

FY: Dec 31 2006

Q: Sep 30 2006

Q: Jun 30 2006

Q: Mar 31 2006

FY: Dec 31 2005

3.01,9.01

3.01

8.01

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

Other Events

1.01

8.01

2.04

2.04

8.01

1.01,9.01

8.01

8.01

1.01,8.01

8.01

1.01,8.01

Entry into a Material Definitive Agreement

1.01,8.01

3.01,9.01

1.01,8.01

Certification of termination of registration of a class of securities (Section 12(b))

Notification of removal from listing and/or registration on a national securities exchange

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Withdrawal of a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Free Writing Prospectus

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

ARDSLEY ADVISORY PARTNERS

MARXE AUSTIN W & GREENHOUSE DAVID M

WEISBERG ROBERT I

TEJWANI KAMLESH

SCHUMACHER AUGUST JR

Kessner Steven

Hatamiya Lon

COOPER JOHN R

CRESCI JOE

Ballentine Roger

Kessel Richard E

HAINES DENNIS

Thomas Michael Eric

Kessel Richard E

Thomas Michael Eric

HAINES DENNIS

WEISBERG ROBERT I

ARDSLEY ADVISORY PARTNERS

MARXE AUSTIN W & GREENHOUSE DAVID M

MORGAN STANLEY

Annual Report Scanned (Paper)

No description available

No description available

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual Report Scanned (Paper)

No description available

Notification of the removal from listing and registration of matured redeemed or retired securities

Annual Report Scanned (Paper)

06

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

06

Correspondence with the SEC

Letter from the SEC

No description available