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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 ODaIM9dY0fFGXvxhH+qBkw==

<SEC-DOCUMENT>0001181431-09-030051.txt : 20090611
<SEC-HEADER>0001181431-09-030051.hdr.sgml : 20090611
<ACCEPTANCE-DATETIME>20090611122010
ACCESSION NUMBER:		0001181431-09-030051
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20090611
DATE AS OF CHANGE:		20090611
EFFECTIVENESS DATE:		20090611

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACTIVE POWER INC
		CENTRAL INDEX KEY:			0001044435
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				742642142
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-74341
		FILM NUMBER:		09886361

	BUSINESS ADDRESS:	
		STREET 1:		2128 WEST BRAKER LANE, BK12
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78758
		BUSINESS PHONE:		5128366464

	MAIL ADDRESS:	
		STREET 1:		2128 WEST BRAKER LANE, BK12
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78758
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0401</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001044435</cik>
        <entityName>ACTIVE POWER INC</entityName>
        <issuerAddress>
            <street1>2128 W. Braker Lane, BK12</street1>
            <street2></street2>
            <city>Austin</city>
            <stateOrCountry>TX</stateOrCountry>
            <zipCode>78758</zipCode>
        </issuerAddress>
        <issuerPhoneNumber></issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
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    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>A.</middleName>
                <lastName>Clishem</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Benjamin</firstName>
                <middleName>L.</middleName>
                <lastName>Scott</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ake</firstName>
                <middleName></middleName>
                <lastName>Almgren</lastName>
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            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Rodney</firstName>
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                <lastName>Bond</lastName>
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                <zipCode>78758</zipCode>
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            <relatedPersonRelationshipList>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>E.</middleName>
                <lastName>de Venny III</lastName>
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                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
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            <relatedPersonRelationshipList>
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            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jan</firstName>
                <middleName>H.</middleName>
                <lastName>Lindelow</lastName>
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                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName>S.</middleName>
                <lastName>Greenberg</lastName>
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            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <middleName>K.</middleName>
                <lastName>Penver</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Uwe</firstName>
                <middleName></middleName>
                <lastName>Schrader-Hausmann</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Lisa</firstName>
                <middleName>M.</middleName>
                <lastName>Brown</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>A.</middleName>
                <lastName>Murphy</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Martin</firstName>
                <middleName>T.</middleName>
                <lastName>Olsen</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gary</firstName>
                <middleName>P.</middleName>
                <lastName>Rackow</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jason</firstName>
                <middleName>P.</middleName>
                <lastName>Rubin</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Karl</firstName>
                <middleName>T.</middleName>
                <lastName>Schuetze</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2128 West Braker Lane, BK 12</street1>
                <street2></street2>
                <city>Austin</city>
                <stateOrCountry>TX</stateOrCountry>
                <zipCode>78758</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Energy</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-05-29</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>3000000</totalOfferingAmount>
            <totalAmountSold>3000000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>1</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>true</authorizedRepresentative>
            <signature>
                <issuerName>ACTIVE POWER INC</issuerName>
                <signatureName>/s/ John Penver</signatureName>
                <nameOfSigner>John Penver</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2009-06-10</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----