<SUBMISSION>
<ACCESSION-NUMBER>0001193125-03-023349
<TYPE>SC 13D/A
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20030724
<SUBJECT-COMPANY>
<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>
<FILING-VALUES>
<FORM-TYPE>SC 13D/A
<ACT>34
<FILE-NUMBER>005-39155
<FILM-NUMBER>03800722
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>500 MARKET ST
<STREET2>STE 1E
<CITY>PORTSMOUTH
<STATE>NH
<ZIP>03801
<PHONE>6034311780
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>500 MARKET ST
<STREET2>STE 1E
<CITY>PORTSMOUTH
<STATE>NH
<ZIP>03801
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>LIVINGSTON DONALD A
<CIK>0001005578
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 13D/A
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>500 MARKET ST
<STREET2>SUITE 1E
<CITY>PORTSMOUTH
<STATE>NH
<ZIP>03801
<PHONE>6034311780
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>500 MARKET ST
<STREET2>SUITE 1E
<CITY>PORTSMOUTH
<STATE>NH
<ZIP>03801
</MAIL-ADDRESS>
</FILED-BY>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>dsc13da.htm
<DESCRIPTION>SCHEDULE 13D/A - AMENDMENT NO. 6
<TEXT>
<HTML><HEAD>
<TITLE>Schedule 13D/A - Amendment No. 6</TITLE>
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="4"><B>UNITED STATES </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="4"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="3"><B>Washington, D.C. 20549 </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="4"><B>SCHEDULE 13D </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="3"><B>Under the Securities Exchange Act of 1934 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="3"><B>(Amendment No. 6)* </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="6"><B>Environmental Power Corporation </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>(Name of Issuer) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>Common Stock, $0.01 par value per share </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="1"><B>(Title of Class of Securities) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>29406-L-10-2
</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(CUSIP Number) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>Scott E. Pueschel, Esq. </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>Pierce
Atwood </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>One New Hampshire Avenue, Suite 350 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2"><B>Portsmouth, NH 03801 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>(603)433-6300 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(Name, Address and Telephone Number of Person Authorized to </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Receive Notices
and Communications) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>July 16, 2003 </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(Date of Event which Requires Filing of this Statement) </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule
because of &#167;&#167;240.13d-l(e), 240.13d-l(f) or 240.13d-1(g), check the following box.&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman" SIZE="2"> </FONT></P>

<p Style='page-break-before:always'>
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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">CUSIP NO. 29406-L-10-2 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;1.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">NAMES OF REPORTING PERSONS</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">I.R.S.
IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman"
SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Donald A. Livingston</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;2.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="6%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">(a)&nbsp;&nbsp;</FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman" SIZE="2"></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">(b)&nbsp;&nbsp;</FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT
FACE="Times New Roman" SIZE="2"></FONT></P></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;3.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">SEC USE ONLY</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;4.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">SOURCE OF FUNDS (See Instructions)</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PF</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;5.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
FACE="Times New Roman" SIZE="2">ITEMS 2(d) OR 2(e)</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="right" WIDTH="6%"><FONT FACE="Times New Roman" SIZE="2"></FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman" SIZE="2"></FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;6.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">CITIZENSHIP OR PLACE OF ORGANIZATION</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;United States</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
</TABLE>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

<TR>
<TD VALIGN="middle" ALIGN="center" WIDTH="13%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">NUMBER&nbsp;OF</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2">SHARES</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">BENEFICIALLY</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2">OWNED&nbsp;BY</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">EACH</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2">REPORTING</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">PERSON</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2">WITH</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="85%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;7.&nbsp;&nbsp;&nbsp;&nbsp;SOLE VOTING POWER</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman"
SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2,850,505</FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman"
SIZE="2">&nbsp;&nbsp;8.&nbsp;&nbsp;&nbsp;&nbsp;SHARED VOTING POWER</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT
FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0</FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
FACE="Times New Roman" SIZE="2">&nbsp;&nbsp;9.&nbsp;&nbsp;&nbsp;&nbsp;SOLE DISPOSITIVE POWER</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2,850,505</FONT></P><HR SIZE="1"
NOSHADE COLOR="#000000"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">10.&nbsp;&nbsp;&nbsp;&nbsp;SHARED DISPOSITIVE POWER</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0</FONT></P></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="3"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
</TABLE>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">11.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2,850,505</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">12.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
FACE="Times New Roman" SIZE="2">Instructions)</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="right" WIDTH="6%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT FACE="Times New Roman" SIZE="2"></FONT><FONT FACE="WINGDINGS" SIZE="2" COLOR="#000000">&#168;</FONT><FONT FACE="Times New Roman"
SIZE="2"></FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">13.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.2%</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">14.</FONT></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" WIDTH="88%"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">TYPE OF REPORTING PERSON (See Instruction)</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="2%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5"><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
</TABLE> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">(continued on following
pages) </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">(page 2 of 4 pages) </FONT></P>

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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"><B>Item 1.&nbsp;&nbsp;&nbsp;&nbsp;Security and Issuer </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Common Stock, $.01 par value per share of Environmental Power Corporation, a Delaware corporation (the &#147;Company&#148;). The address of
the Company&#146;s principal executive office is One Cate Street, 4</FONT><FONT FACE="Times New Roman" SIZE="1" COLOR="#000000"><SUP>th</SUP></FONT><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"> Floor, Portsmouth, NH 03801. </FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"><B>Item 2.&nbsp;&nbsp;&nbsp;&nbsp;Identity and Background </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
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<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(a)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">The person (&#147;Reporting Person&#148;) filing this Amendment No. 5 to Schedule 13D is Donald A. Livingston. </FONT></TD></TR></TABLE> <P
STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
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<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(b)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">The business address of the Reporting Person is c/o Environmental Power Corporation, One Cate Street, 4</FONT><FONT FACE="Times New Roman" SIZE="1"
COLOR="#000000"><SUP>th</SUP></FONT><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"> Floor, Portsmouth, New Hampshire 03801. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(c)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">The Reporting Person is Executive Vice President and a director of Environmental Power Corporation, One Cate Street, 4</FONT><FONT FACE="Times New Roman" SIZE="1"
COLOR="#000000"><SUP>th</SUP></FONT><FONT FACE="Times New Roman" SIZE="2" COLOR="#000000"> Floor, Portsmouth, New Hampshire 03801 and President of Microgy Cogeneration Systems, Inc., a subsidiary of the Company (&#147;Microgy&#148;). The
Company&#146;s and Microgy&#146;s principal business is environmentally sound power generation. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(d)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Criminal proceedings &#150; None. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(e)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Civil proceedings &#150; None. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(f)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">The Reporting Person is a citizen of the United States. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"><B>Item 3.&nbsp;&nbsp;&nbsp;&nbsp;Source and Amount of Funds or Other Consideration </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">The Reporting Person acquired a total of 388,766 shares of the Company&#146;s Common Stock in two private transactions on July 15, 2003 and
July 16, 2003 for an aggregate purchase price of $99,828.86, paid out of personal funds. As a result of these transactions, when taken together, the Reporting Person&#146;s aggregate beneficial ownership of the Company&#146;s Common Stock increased
by more than 1% of the outstanding Common Stock as of such date. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"><B>Item
4.&nbsp;&nbsp;&nbsp;&nbsp;Purpose of Transaction </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">The Reporting Person
acquired the shares of Common Stock described above for investment purposes. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman"
SIZE="2"><B>Item 5.&nbsp;&nbsp;&nbsp;&nbsp;Interest in Securities of the Issuer </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(a)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">The Reporting Person may be deemed to own beneficially 2,850,505 shares of Common Stock, which represents 12.2% of the issued and outstanding shares of Common Stock of the Company
as of July 16, 2003 (based on 23,303,279 shares outstanding as of such date). </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(b)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">The number of shares as to which the Reporting Person may be deemed to have (i) sole power to vote or to direct the vote, (ii) shared power to vote or to direct the vote, (iii) sole
power to dispose or to direct the disposition of and (iv) shared power to dispose or to direct the disposition of is set forth in the cover pages to this Amendment and such information is incorporated herein by reference. </FONT></TD></TR></TABLE>
<P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(c)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">None. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(d)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Not Applicable. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(e)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Not Applicable. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
FACE="Times New Roman" SIZE="2"><B>Item 6.&nbsp;&nbsp;&nbsp;&nbsp;Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT
SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Not Applicable. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"><B>Item 7.&nbsp;&nbsp;&nbsp;&nbsp;Material to Be Filed as Exhibits </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Not Applicable. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="2">(continued on following page) </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">(page 3 of 4 pages) </FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>

<p Style='page-break-before:always'>
<HR  SIZE="3" COLOR="#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2"><B>Signature </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and
correct. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P><DIV ALIGN="right">
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="40%" BORDER="0">

<TR>
<TD VALIGN="top" ALIGN="center" WIDTH="100%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">July 24, 2003</FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center" WIDTH="100%"><FONT FACE="Times New Roman" SIZE="2">(Date)</FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center" WIDTH="100%"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">/s/ Donald A. Livingston</FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR>
<TD VALIGN="bottom" WIDTH="100%"><FONT FACE="Times New Roman" SIZE="2">Donald A. Livingston</FONT></TD></TR>
</TABLE></DIV> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">(page 4 of 4 pages) </FONT></P>
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