

<!--Generated by Disclosure Solutions PROFILE 2.2.3.0 Copyright 1995 - 2013 Thomson Reuters Accelus. All rights reserved.-->
<xs:schema targetNamespace="http://activepower.com/20130331" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:acpw="http://activepower.com/20130331" xmlns:us-types="http://fasb.org/us-types/2012-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:invest="http://xbrl.sec.gov/invest/2012-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:dei="http://xbrl.sec.gov/dei/2012-01-31">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="acpw-20130331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="acpw-20130331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="acpw-20130331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="acpw-20130331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://activepower.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>000100 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/CondensedConsolidatedBalanceSheetsUnaudited" id="CondensedConsolidatedBalanceSheetsUnaudited">
        <link:definition>010000 - Statement - Condensed Consolidated Balance Sheets (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical" id="CondensedConsolidatedBalanceSheetsUnauditedParenthetical">
        <link:definition>010100 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/CondensedConsolidatedStatementOfOperationsAndComprehensiveLossUnaudited" id="CondensedConsolidatedStatementOfOperationsAndComprehensiveLossUnaudited">
        <link:definition>020000 - Statement - Condensed Consolidated Statement of Operations and Comprehensive Loss (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/CondensedConsolidatedStatementOfStockholdersEquityUnaudited" id="CondensedConsolidatedStatementOfStockholdersEquityUnaudited">
        <link:definition>030000 - Statement - Condensed Consolidated Statement of Stockholders' Equity (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/CondensedConsolidatedStatementOfCashFlowsUnaudited" id="CondensedConsolidatedStatementOfCashFlowsUnaudited">
        <link:definition>040000 - Statement - Condensed Consolidated Statement of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/SignificantAccountingPolicies" id="SignificantAccountingPolicies">
        <link:definition>060100 - Disclosure - Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatements" id="RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatements">
        <link:definition>060200 - Disclosure - Restatement of Previously Reported Unaudited Condensed Consolidated Financial Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/SupplementalBalanceSheetInformation" id="SupplementalBalanceSheetInformation">
        <link:definition>060300 - Disclosure - Supplemental Balance Sheet Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/NetLossPerShareAsRestated" id="NetLossPerShareAsRestated">
        <link:definition>060400 - Disclosure - Net Loss Per Share (as restated)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/FairValueOfFinancialInstruments" id="FairValueOfFinancialInstruments">
        <link:definition>060500 - Disclosure - Fair Value of Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/Guarantees" id="Guarantees">
        <link:definition>060600 - Disclosure - Guarantees</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/SubsequentEvents" id="SubsequentEvents">
        <link:definition>060700 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatementsTables" id="RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatementsTables">
        <link:definition>080200 - Disclosure - Restatement of Previously Reported Unaudited Condensed Consolidated Financial Statements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/SupplementalBalanceSheetInformationTables" id="SupplementalBalanceSheetInformationTables">
        <link:definition>080300 - Disclosure - Supplemental Balance Sheet Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/NetLossPerShareAsRestatedTables" id="NetLossPerShareAsRestatedTables">
        <link:definition>080400 - Disclosure - Net Loss Per Share (as restated) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/FairValueOfFinancialInstrumentsTables" id="FairValueOfFinancialInstrumentsTables">
        <link:definition>080500 - Disclosure - Fair Value of Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatementsDetails" id="RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatementsDetails">
        <link:definition>090200 - Disclosure - Restatement of Previously Reported Unaudited Condensed Consolidated Financial Statements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/SupplementalBalanceSheetInformationDetails" id="SupplementalBalanceSheetInformationDetails">
        <link:definition>090300 - Disclosure - Supplemental Balance Sheet Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/NetLossPerShareAsRestatedDetails" id="NetLossPerShareAsRestatedDetails">
        <link:definition>090400 - Disclosure - Net Loss Per Share (as restated) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/FairValueOfFinancialInstrumentsDetails" id="FairValueOfFinancialInstrumentsDetails">
        <link:definition>090500 - Disclosure - Fair Value of Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/GuaranteesDetails" id="GuaranteesDetails">
        <link:definition>090600 - Disclosure - Guarantees (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://activepower.com/role/SubsequentEventsDetails" id="SubsequentEventsDetails">
        <link:definition>090700 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://fasb.org/us-gaap/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/invest/2012-01-31" schemaLocation="http://xbrl.sec.gov/invest/2012/invest-2012-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/country/2012-01-31" schemaLocation="http://xbrl.sec.gov/country/2012/country-2012-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/currency/2012-01-31" schemaLocation="http://xbrl.sec.gov/currency/2012/currency-2012-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/exch/2012-01-31" schemaLocation="http://xbrl.sec.gov/exch/2012/exch-2012-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xs:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2004/ref" schemaLocation="http://www.xbrl.org/2004/ref-2004-08-10.xsd" />
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xs:import namespace="http://fasb.org/us-types/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-types-2012-01-31.xsd" />
  <xs:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xs:element name="EmasConsumablesRepairMaintenanceAndConsultingServicesGeneralDeliverablePeriodMinimum" id="acpw_EmasConsumablesRepairMaintenanceAndConsultingServicesGeneralDeliverablePeriodMinimum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="InterestExpenseNet" id="acpw_InterestExpenseNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="WarrantyLiabilityAbstract" id="acpw_WarrantyLiabilityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumeratorAbstract" id="acpw_NumeratorAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DocumentAndEntityInformationAbstract" id="acpw_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="StandardPowerQualityProductsWarrantyPeriodFromDateOfShipment" id="acpw_StandardPowerQualityProductsWarrantyPeriodFromDateOfShipment" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="MinimumNumberOfSecondTierProductsIncludedInSignificantMeas" id="acpw_MinimumNumberOfSecondTierProductsIncludedInSignificantMeas" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="StandardPowerQualityProductsWarrantyPeriodFromDateOfCommissioning" id="acpw_StandardPowerQualityProductsWarrantyPeriodFromDateOfCommissioning" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="DenominatorAbstract" id="acpw_DenominatorAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfCriteriaToBeMetForRevenueRecognition" id="acpw_NumberOfCriteriaToBeMetForRevenueRecognition" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="MinimumNumberOfFirstTierProductsIncludedInSignificantMeas" id="acpw_MinimumNumberOfFirstTierProductsIncludedInSignificantMeas" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="ExtendedProductsWarrantyPeriodFromDateOfShipmentToPrimaryOemCustomerMaximum" id="acpw_ExtendedProductsWarrantyPeriodFromDateOfShipmentToPrimaryOemCustomerMaximum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="StandardProductsWarrantyPeriodForPrimaryOemCustomer" id="acpw_StandardProductsWarrantyPeriodForPrimaryOemCustomer" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="CommissioningAndInstallationPeriod" id="acpw_CommissioningAndInstallationPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EmasConsumablesRepairMaintenanceAndConsultingServicesGeneralDeliverablePeriodMaximum" id="acpw_EmasConsumablesRepairMaintenanceAndConsultingServicesGeneralDeliverablePeriodMaximum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PaymentsForTaxesRelatedToSettlementOfEquityAwards" id="acpw_PaymentsForTaxesRelatedToSettlementOfEquityAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatementsAbstract" id="acpw_RestatementOfPreviouslyReportedUnauditedCondensedConsolidatedFinancialStatementsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfPriorPeriodAdjustmentsTextBlockTextBlock" id="acpw_ScheduleOfPriorPeriodAdjustmentsTextBlockTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="ExpectedRevenuePeriodOne" id="acpw_ExpectedRevenuePeriodOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="ExpectedRevenuePeriodTwo" id="acpw_ExpectedRevenuePeriodTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="ExpectedInventoryReturn" id="acpw_ExpectedInventoryReturn" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="MaximumAmountOfSecuritiesToBeSoldUnderShelfRegistration" id="acpw_MaximumAmountOfSecuritiesToBeSoldUnderShelfRegistration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
</xs:schema>