

<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.activepower.com/20160930" xmlns:acpw="http://www.activepower.com/20160930" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-roles-2016-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2016-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2016/elts/us-types-2016-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2016-01-31" schemaLocation="http://xbrl.sec.gov/country/2016/country-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2016-01-31" schemaLocation="http://xbrl.sec.gov/currency/2016/currency-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2016-01-31" schemaLocation="http://xbrl.sec.gov/exch/2016/exch-2016-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acpw-20160930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acpw-20160930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acpw-20160930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acpw-20160930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="BasisOfPresentation" roleURI="http://www.activepower.com/role/BasisOfPresentation">
        <link:definition>2101100 - Disclosure - Basis of Presentation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisOfPresentationAssetPurchaseAgreementDetails" roleURI="http://www.activepower.com/role/BasisOfPresentationAssetPurchaseAgreementDetails">
        <link:definition>2401402 - Disclosure - Basis of Presentation - Asset Purchase Agreement (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 id="BasisOfPresentationProductsDetails" roleURI="http://www.activepower.com/role/BasisOfPresentationProductsDetails">
        <link:definition>2401401 - Disclosure - Basis of Presentation - Products (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 id="CommitmentsAndContingencies" roleURI="http://www.activepower.com/role/CommitmentsAndContingencies">
        <link:definition>2108100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheets" roleURI="http://www.activepower.com/role/CondensedConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheetsParenthetical" roleURI="http://www.activepower.com/role/CondensedConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Condensed Consolidated Balance Sheets (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 id="CondensedConsolidatedStatementOfCashFlows" roleURI="http://www.activepower.com/role/CondensedConsolidatedStatementOfCashFlows">
        <link:definition>1004000 - Statement - Condensed Consolidated Statement of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementOfOperationsAndComprehensiveLoss" roleURI="http://www.activepower.com/role/CondensedConsolidatedStatementOfOperationsAndComprehensiveLoss">
        <link:definition>1002000 - Statement - Condensed Consolidated Statement of Operations and Comprehensive Loss</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementOfStockholdersEquity" roleURI="http://www.activepower.com/role/CondensedConsolidatedStatementOfStockholdersEquity">
        <link:definition>1003000 - Statement - Condensed Consolidated Statement of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.activepower.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - 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 id="FairValueOfFinancialInstruments" roleURI="http://www.activepower.com/role/FairValueOfFinancialInstruments">
        <link:definition>2104100 - 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 id="FairValueOfFinancialInstrumentsDetails" roleURI="http://www.activepower.com/role/FairValueOfFinancialInstrumentsDetails">
        <link:definition>2404401 - 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 id="Guarantees" roleURI="http://www.activepower.com/role/Guarantees">
        <link:definition>2105100 - 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 id="GuaranteesDetails" roleURI="http://www.activepower.com/role/GuaranteesDetails">
        <link:definition>2405401 - 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 id="NetLossPerShare" roleURI="http://www.activepower.com/role/NetLossPerShare">
        <link:definition>2103100 - Disclosure - Net Loss Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossPerShareDetails" roleURI="http://www.activepower.com/role/NetLossPerShareDetails">
        <link:definition>2403402 - Disclosure - Net Loss Per Share (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 id="NetLossPerShareTables" roleURI="http://www.activepower.com/role/NetLossPerShareTables">
        <link:definition>2303301 - Disclosure - Net Loss Per Share (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 id="RevolvingLineOfCredit" roleURI="http://www.activepower.com/role/RevolvingLineOfCredit">
        <link:definition>2106100 - Disclosure - Revolving Line of Credit</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevolvingLineOfCreditDetails" roleURI="http://www.activepower.com/role/RevolvingLineOfCreditDetails">
        <link:definition>2406401 - Disclosure - Revolving Line of Credit (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 id="ShareholderRightsPlan" roleURI="http://www.activepower.com/role/ShareholderRightsPlan">
        <link:definition>2109100 - Disclosure - Shareholder Rights Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholderRightsPlanDetails" roleURI="http://www.activepower.com/role/ShareholderRightsPlanDetails">
        <link:definition>2409401 - Disclosure - Shareholder Rights Plan (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 id="SignificantAccountingPoliciesAndSupplementalBalanceSheetInformation" roleURI="http://www.activepower.com/role/SignificantAccountingPoliciesAndSupplementalBalanceSheetInformation">
        <link:definition>2102100 - Disclosure - Significant Accounting Policies and 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 id="SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationAdditionalInformationDetails" roleURI="http://www.activepower.com/role/SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationAdditionalInformationDetails">
        <link:definition>2402403 - Disclosure - Significant Accounting Policies and Supplemental Balance Sheet Information - Additional 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 id="SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationPolicies" roleURI="http://www.activepower.com/role/SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationPolicies">
        <link:definition>2202201 - Disclosure - Significant Accounting Policies and Supplemental Balance Sheet Information (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 id="SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationRevenueRecognitionDetails" roleURI="http://www.activepower.com/role/SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationRevenueRecognitionDetails">
        <link:definition>2402404 - Disclosure - Significant Accounting Policies and Supplemental Balance Sheet Information - Revenue Recognition (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 id="SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationTables" roleURI="http://www.activepower.com/role/SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationTables">
        <link:definition>2302302 - Disclosure - Significant Accounting Policies and 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>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="acpw_BorrowingBaseSublimitsAccountsReceivable" name="BorrowingBaseSublimitsAccountsReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="acpw_BorrowingBaseSublimitsInventory" name="BorrowingBaseSublimitsInventory" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="acpw_BorrowingBaseSublimitsPurchaseOrders" name="BorrowingBaseSublimitsPurchaseOrders" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="acpw_ClassOfWarrantOrRightShareholderRightsPlanExtensionTerm" name="ClassOfWarrantOrRightShareholderRightsPlanExtensionTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_CommissioningAndInstallationPeriod" name="CommissioningAndInstallationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DebtInstrumentBorrowingBaseSublimitsNumberOfReconciliationPeriods" name="DebtInstrumentBorrowingBaseSublimitsNumberOfReconciliationPeriods" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThreshold" name="DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThreshold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThresholdMinimumEvaluationPeriod" name="DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThresholdMinimumEvaluationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DebtInstrumentRestrictiveCovenantKeyExecutiveReplacementRestrictionNumberOfDays" name="DebtInstrumentRestrictiveCovenantKeyExecutiveReplacementRestrictionNumberOfDays" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DeferredRentAndOtherLiabilitiesCurrent" name="DeferredRentAndOtherLiabilitiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="acpw_DepositGuaranteesOutstandingForBuildingLease" name="DepositGuaranteesOutstandingForBuildingLease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="acpw_DiscontinuedOperationAmountOfNetAssetsAfterDisposalBenchmark" name="DiscontinuedOperationAmountOfNetAssetsAfterDisposalBenchmark" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="acpw_DisposalGroupIncludingDiscontinuedOperationLeaseObligations" name="DisposalGroupIncludingDiscontinuedOperationLeaseObligations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="acpw_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_ExtendedProductsWarrantyPeriodFromDateOfShipmentToPrimaryOemCustomerMaximum" name="ExtendedProductsWarrantyPeriodFromDateOfShipmentToPrimaryOemCustomerMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_IncreaseInRateOnCollateralHandlingFeesInEventOfDefault" name="IncreaseInRateOnCollateralHandlingFeesInEventOfDefault" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_IncreaseInRateOnFinanceChargesOrInterestRatesAsApplicableInEventOfDefault" name="IncreaseInRateOnFinanceChargesOrInterestRatesAsApplicableInEventOfDefault" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="acpw_LetterOfCreditExpiringonJune2017Member" name="LetterOfCreditExpiringonJune2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_LineOfCreditFacilityMaximumBorrowingCapacityPercentage" name="LineOfCreditFacilityMaximumBorrowingCapacityPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_LiquidityRatioForReconciliationPeriod" name="LiquidityRatioForReconciliationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="acpw_MISProductsMember" name="MISProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_MaintenanceAgreementsConsumablesRepairMaintenanceAndConsultingServicesGeneralDeliverablePeriod" name="MaintenanceAgreementsConsumablesRepairMaintenanceAndConsultingServicesGeneralDeliverablePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_MinimumLiquidityRatioRequirement" name="MinimumLiquidityRatioRequirement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_NumberOfFirstTierProductsIncludedInSignificantMEAs" name="NumberOfFirstTierProductsIncludedInSignificantMEAs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_NumberOfSecondTierProductsIncludedInSignificantMEAs" name="NumberOfSecondTierProductsIncludedInSignificantMEAs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_PaymentsForTaxesRelatedToSettlementOfEquityAwards" name="PaymentsForTaxesRelatedToSettlementOfEquityAwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="acpw_PerformanceGuaranteeOutstandingDepositForFixedAsset" name="PerformanceGuaranteeOutstandingDepositForFixedAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="acpw_SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationTextBlock" name="SignificantAccountingPoliciesAndSupplementalBalanceSheetInformationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_SiliconValleyBankMember" name="SiliconValleyBankMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_StandardPowerQualityProductsWarrantyPeriodFromDateOfCommissioning" name="StandardPowerQualityProductsWarrantyPeriodFromDateOfCommissioning" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_StandardPowerQualityProductsWarrantyPeriodFromDateOfShipment" name="StandardPowerQualityProductsWarrantyPeriodFromDateOfShipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_StandardProductsWarrantyPeriodForPrimaryOemCustomer" name="StandardProductsWarrantyPeriodForPrimaryOemCustomer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_ThresholdPeriodPastDueForWriteOffofTradeAccountsReceivableExtendedTerm" name="ThresholdPeriodPastDueForWriteOffofTradeAccountsReceivableExtendedTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_U.K.AndGermanyMember" name="U.K.AndGermanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_UPSSystemsMember" name="UPSSystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_WarrantyLiabilityAbstract" name="WarrantyLiabilityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
</xsd:schema>