<SUBMISSION>
<ACCESSION-NUMBER>0001019687-08-001175
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20080317
<FILING-DATE>20080318
<DATE-OF-FILING-DATE-CHANGE>20080318
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Gelbaum David
<CIK>0001391795
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32393
<FILM-NUMBER>08697904
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>949-646-3784
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2309 SANTIAGO DRIVE
<CITY>NEWPORT BEACH
<STATE>CA
<ZIP>92660
</MAIL-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Gelbaum Monica Chavez
<CIK>0001403417
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32393
<FILM-NUMBER>08697903
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>760-942-0157
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2309 SANTIAGO DRIVE
<CITY>NEWPORT BEACH
<STATE>CA
<ZIP>92660
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>ENVIRONMENTAL POWER CORP
<CIK>0000805012
<ASSIGNED-SIC>4991
<IRS-NUMBER>042782065
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>ONE CATE STREET
<STREET2>4TH FLOOR
<CITY>PORTSMOUTH
<STATE>NH
<ZIP>03801
<PHONE>6034311780
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>ONE CATE STREET
<STREET2>4TH FLOOR
<CITY>PORTSMOUTH
<STATE>NH
<ZIP>03801
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Quercus Trust
<CIK>0001403463
<STATE-OF-INCORPORATION>CA
<FISCAL-YEAR-END>1231
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32393
<FILM-NUMBER>08697905
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>2309 SANTIAGO DRIVE
<CITY>NEWPORT BEACH
<STATE>CA
<ZIP>92660
<PHONE>310-201-7481
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2309 SANTIAGO DRIVE
<CITY>NEWPORT BEACH
<STATE>CA
<ZIP>92660
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-03-17</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000805012</issuerCik>
        <issuerName>ENVIRONMENTAL POWER CORP</issuerName>
        <issuerTradingSymbol>EPG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001403463</rptOwnerCik>
            <rptOwnerName>Quercus Trust</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1835 NEWPORT BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>A109-PMB 467</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA,</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92627</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Former 10% Owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001391795</rptOwnerCik>
            <rptOwnerName>Gelbaum David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1835 NEWPORT BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>A109-PMB 467</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92627</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Co-Trustee</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001403417</rptOwnerCik>
            <rptOwnerName>Gelbaum Monica Chavez</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1835 NEWPORT BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>A109-PMB 467</rptOwnerStreet2>
            <rptOwnerCity>COSTA MESA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92627</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Co-Trustee</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <remarks>Based on information provided on the Issuer's Form 10-K filed on March 17, 2008, the total outstanding shares of Issuer's common stock as of February 29, 2008 was 15,579,354 shares, causing Reporting Persons to be beneficial owners of less than 10% of common stock. This filing is a voluntary report of Reporting Person's exit from &quot;insider&quot; status subject to Section 16.</remarks>

    <ownerSignature>
        <signatureName>/s/ David Gelbaum, Co-Trustee, The Quercus Trust</signatureName>
        <signatureDate>2008-03-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ David Gelbaum, as attorney-in-fact for Monica Chavez Gelbaum, Co-Trustee, The Quercus Trust</signatureName>
        <signatureDate>2008-03-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
