<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://pinnaclewest.com/20170331" 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:pnw="http://pinnaclewest.com/20170331" xmlns:us-types="http://fasb.org/us-types/2016-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" 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="pnw-20170331_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="pnw-20170331_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="pnw-20170331_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="pnw-20170331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="ChangesInAccumulatedOtherComprehensiveLoss" roleURI="http://pinnaclewest.com/role/ChangesInAccumulatedOtherComprehensiveLoss">
        <link:definition>2114100 - Disclosure - Changes in Accumulated Other 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="ChangesInAccumulatedOtherComprehensiveLossDetails" roleURI="http://pinnaclewest.com/role/ChangesInAccumulatedOtherComprehensiveLossDetails">
        <link:definition>2414402 - Disclosure - Changes in Accumulated Other Comprehensive Loss (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="ChangesInAccumulatedOtherComprehensiveLossTables" roleURI="http://pinnaclewest.com/role/ChangesInAccumulatedOtherComprehensiveLossTables">
        <link:definition>2314301 - Disclosure - Changes in Accumulated Other Comprehensive Loss (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="CommitmentsAndContingencies" roleURI="http://pinnaclewest.com/role/CommitmentsAndContingencies">
        <link:definition>2107100 - 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="CommitmentsAndContingenciesEnvironmentalMattersAndFinancialAssurancesDetails" roleURI="http://pinnaclewest.com/role/CommitmentsAndContingenciesEnvironmentalMattersAndFinancialAssurancesDetails">
        <link:definition>2407403 - Disclosure - Commitments and Contingencies - Environmental Matters and Financial Assurances (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="CommitmentsAndContingenciesPaloVerdeNuclearGeneratingStationAndContractualObligationsDetails" roleURI="http://pinnaclewest.com/role/CommitmentsAndContingenciesPaloVerdeNuclearGeneratingStationAndContractualObligationsDetails">
        <link:definition>2407401 - Disclosure - Commitments and Contingencies - Palo Verde Nuclear Generating Station and Contractual Obligations (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="CommitmentsAndContingenciesSuperfundRelatedMattersSouthwestPowerOutageAndCleanAirActDetails" roleURI="http://pinnaclewest.com/role/CommitmentsAndContingenciesSuperfundRelatedMattersSouthwestPowerOutageAndCleanAirActDetails">
        <link:definition>2407402 - Disclosure - Commitments and Contingencies - Superfund-Related Matters, Southwest Power Outage and Clean Air Act (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="CondensedConsolidatedBalanceSheetsUnaudited" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedBalanceSheetsUnaudited">
        <link:definition>1004000 - 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 id="CondensedConsolidatedBalanceSheetsUnauditedParenthetical" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical">
        <link:definition>1004501 - 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 id="CondensedConsolidatedStatementsOfCashFlowsUnaudited" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited">
        <link:definition>1005000 - Statement - CONDENSED CONSOLIDATED STATEMENTS 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 id="CondensedConsolidatedStatementsOfChangesInEquityUnaudited" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedStatementsOfChangesInEquityUnaudited">
        <link:definition>1006000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN 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 id="CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited">
        <link:definition>1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (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 id="CondensedConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnauditedParenthetical">
        <link:definition>1003501 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (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 id="CondensedConsolidatedStatementsOfIncomeUnaudited" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedStatementsOfIncomeUnaudited">
        <link:definition>1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (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 id="CondensedConsolidatedStatementsOfIncomeUnauditedCalc2" roleURI="http://pinnaclewest.com/role/CondensedConsolidatedStatementsOfIncomeUnauditedCalc2">
        <link:definition>1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (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 id="ConsolidatedAndNatureOfOperationsScheduleOfReclassificationOfPriorPeriodAdjustmentsDetails" roleURI="http://pinnaclewest.com/role/ConsolidatedAndNatureOfOperationsScheduleOfReclassificationOfPriorPeriodAdjustmentsDetails">
        <link:definition>2401402 - Disclosure - Consolidated and Nature of Operations - Schedule of Reclassification of Prior Period Adjustments (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="ConsolidationAndNatureOfOperations" roleURI="http://pinnaclewest.com/role/ConsolidationAndNatureOfOperations">
        <link:definition>2101100 - Disclosure - Consolidation and Nature of Operations</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="ConsolidationAndNatureOfOperationsDetails" roleURI="http://pinnaclewest.com/role/ConsolidationAndNatureOfOperationsDetails">
        <link:definition>2401403 - Disclosure - Consolidation and Nature of Operations (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="ConsolidationAndNatureOfOperationsTables" roleURI="http://pinnaclewest.com/role/ConsolidationAndNatureOfOperationsTables">
        <link:definition>2301301 - Disclosure - Consolidation and Nature of Operations (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="DerivativeAccounting" roleURI="http://pinnaclewest.com/role/DerivativeAccounting">
        <link:definition>2106100 - Disclosure - Derivative Accounting</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="DerivativeAccountingCreditRiskAndCreditRelatedContingentFeaturesDetails" roleURI="http://pinnaclewest.com/role/DerivativeAccountingCreditRiskAndCreditRelatedContingentFeaturesDetails">
        <link:definition>2406406 - Disclosure - Derivative Accounting - Credit Risk and Credit Related Contingent Features (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="DerivativeAccountingDerivativeInstrumentsInBalanceSheetsDetails" roleURI="http://pinnaclewest.com/role/DerivativeAccountingDerivativeInstrumentsInBalanceSheetsDetails">
        <link:definition>2406405 - Disclosure - Derivative Accounting - Derivative Instruments in the Balance Sheets (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="DerivativeAccountingDerivativeInstrumentsInBalanceSheetsDetailsCalc2" roleURI="http://pinnaclewest.com/role/DerivativeAccountingDerivativeInstrumentsInBalanceSheetsDetailsCalc2">
        <link:definition>2406405 - Disclosure - Derivative Accounting - Derivative Instruments in the Balance Sheets (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="DerivativeAccountingGainsAndLossesFromDerivativeInstrumentsDetails" roleURI="http://pinnaclewest.com/role/DerivativeAccountingGainsAndLossesFromDerivativeInstrumentsDetails">
        <link:definition>2406404 - Disclosure - Derivative Accounting - Gains and Losses from Derivative 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="DerivativeAccountingNarrativeDetails" roleURI="http://pinnaclewest.com/role/DerivativeAccountingNarrativeDetails">
        <link:definition>2406402 - Disclosure - Derivative Accounting - Narrative (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="DerivativeAccountingScheduleOfGrossNotionalAmountsOutstandingDetails" roleURI="http://pinnaclewest.com/role/DerivativeAccountingScheduleOfGrossNotionalAmountsOutstandingDetails">
        <link:definition>2406403 - Disclosure - Derivative Accounting - Schedule of Gross Notional Amounts Outstanding (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="DerivativeAccountingTables" roleURI="http://pinnaclewest.com/role/DerivativeAccountingTables">
        <link:definition>2306301 - Disclosure - Derivative Accounting (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="DocumentAndEntityInformation" roleURI="http://pinnaclewest.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="EarningsPerShare" roleURI="http://pinnaclewest.com/role/EarningsPerShare">
        <link:definition>2110100 - Disclosure - Earnings 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="EarningsPerShareDetails" roleURI="http://pinnaclewest.com/role/EarningsPerShareDetails">
        <link:definition>2410402 - Disclosure - Earnings 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="EarningsPerShareTables" roleURI="http://pinnaclewest.com/role/EarningsPerShareTables">
        <link:definition>2310301 - Disclosure - Earnings 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="FairValueMeasurements" roleURI="http://pinnaclewest.com/role/FairValueMeasurements">
        <link:definition>2111100 - Disclosure - Fair Value Measurements</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="FairValueMeasurementsAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails" roleURI="http://pinnaclewest.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredOnRecurringBasisDetails">
        <link:definition>2411402 - Disclosure - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (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="FairValueMeasurementsAssetsAndLiabilitiesMeasuredOnRecurringBasisDetailsCalc2" roleURI="http://pinnaclewest.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredOnRecurringBasisDetailsCalc2">
        <link:definition>2411402 - Disclosure - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (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="FairValueMeasurementsLevel3RollforwardDerivativesDetails" roleURI="http://pinnaclewest.com/role/FairValueMeasurementsLevel3RollforwardDerivativesDetails">
        <link:definition>2411404 - Disclosure - Fair Value Measurements - Level 3 Rollforward Derivatives (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="FairValueMeasurementsSignificantUnobservableInputsUsedToValueLevel3InstrumentsDetails2" roleURI="http://pinnaclewest.com/role/FairValueMeasurementsSignificantUnobservableInputsUsedToValueLevel3InstrumentsDetails2">
        <link:definition>2411403 - Disclosure - Fair Value Measurements - Significant Unobservable Inputs Used to Value Level 3 Instruments (Details 2)</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="FairValueMeasurementsTables" roleURI="http://pinnaclewest.com/role/FairValueMeasurementsTables">
        <link:definition>2311301 - Disclosure - Fair Value Measurements (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="LongTermDebtAndLiquidityMatters" roleURI="http://pinnaclewest.com/role/LongTermDebtAndLiquidityMatters">
        <link:definition>2102100 - Disclosure - Long-Term Debt and Liquidity Matters</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="LongTermDebtAndLiquidityMattersEstimatedFairValueOfLongTermDebtDetails" roleURI="http://pinnaclewest.com/role/LongTermDebtAndLiquidityMattersEstimatedFairValueOfLongTermDebtDetails">
        <link:definition>2402403 - Disclosure - Long-Term Debt and Liquidity Matters - Estimated Fair Value of Long-Term Debt (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="LongTermDebtAndLiquidityMattersNarrativeDetails" roleURI="http://pinnaclewest.com/role/LongTermDebtAndLiquidityMattersNarrativeDetails">
        <link:definition>2402402 - Disclosure - Long-Term Debt and Liquidity Matters - Narrative (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="LongTermDebtAndLiquidityMattersTables" roleURI="http://pinnaclewest.com/role/LongTermDebtAndLiquidityMattersTables">
        <link:definition>2302301 - Disclosure - Long-Term Debt and Liquidity Matters (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="NewAccountingStandards" roleURI="http://pinnaclewest.com/role/NewAccountingStandards">
        <link:definition>2113100 - Disclosure - New Accounting Standards</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="NewAccountingStandardsPolicies" roleURI="http://pinnaclewest.com/role/NewAccountingStandardsPolicies">
        <link:definition>2213201 - Disclosure - New Accounting Standards (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="NuclearDecommissioningTrusts" roleURI="http://pinnaclewest.com/role/NuclearDecommissioningTrusts">
        <link:definition>2112100 - Disclosure - Nuclear Decommissioning Trusts</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="NuclearDecommissioningTrustsDetails" roleURI="http://pinnaclewest.com/role/NuclearDecommissioningTrustsDetails">
        <link:definition>2412402 - Disclosure - Nuclear Decommissioning Trusts (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="NuclearDecommissioningTrustsTables" roleURI="http://pinnaclewest.com/role/NuclearDecommissioningTrustsTables">
        <link:definition>2312301 - Disclosure - Nuclear Decommissioning Trusts (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="OtherIncomeAndOtherExpense" roleURI="http://pinnaclewest.com/role/OtherIncomeAndOtherExpense">
        <link:definition>2109100 - Disclosure - Other Income and Other Expense</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="OtherIncomeAndOtherExpenseDetails" roleURI="http://pinnaclewest.com/role/OtherIncomeAndOtherExpenseDetails">
        <link:definition>2409402 - Disclosure - Other Income and Other Expense (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="OtherIncomeAndOtherExpenseTables" roleURI="http://pinnaclewest.com/role/OtherIncomeAndOtherExpenseTables">
        <link:definition>2309301 - Disclosure - Other Income and Other Expense (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="PaloVerdeSaleLeasebackVariableInterestEntities" roleURI="http://pinnaclewest.com/role/PaloVerdeSaleLeasebackVariableInterestEntities">
        <link:definition>2105100 - Disclosure - Palo Verde Sale Leaseback Variable Interest Entities</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="PaloVerdeSaleLeasebackVariableInterestEntitiesNarrativeDetails" roleURI="http://pinnaclewest.com/role/PaloVerdeSaleLeasebackVariableInterestEntitiesNarrativeDetails">
        <link:definition>2405402 - Disclosure - Palo Verde Sale Leaseback Variable Interest Entities - Narrative (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="PaloVerdeSaleLeasebackVariableInterestEntitiesScheduleOfViesDetails" roleURI="http://pinnaclewest.com/role/PaloVerdeSaleLeasebackVariableInterestEntitiesScheduleOfViesDetails">
        <link:definition>2405403 - Disclosure - Palo Verde Sale Leaseback Variable Interest Entities - Schedule of VIEs (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="PaloVerdeSaleLeasebackVariableInterestEntitiesTables" roleURI="http://pinnaclewest.com/role/PaloVerdeSaleLeasebackVariableInterestEntitiesTables">
        <link:definition>2305301 - Disclosure - Palo Verde Sale Leaseback Variable Interest Entities (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="RegulatoryMatters" roleURI="http://pinnaclewest.com/role/RegulatoryMatters">
        <link:definition>2103100 - Disclosure - Regulatory Matters</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="RegulatoryMattersFourCornersAndChollaDetails" roleURI="http://pinnaclewest.com/role/RegulatoryMattersFourCornersAndChollaDetails">
        <link:definition>2403404 - Disclosure - Regulatory Matters - Four Corners and Cholla (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="RegulatoryMattersRetailRateCaseFilingDetails" roleURI="http://pinnaclewest.com/role/RegulatoryMattersRetailRateCaseFilingDetails">
        <link:definition>2403402 - Disclosure - Regulatory Matters - Retail Rate Case Filing (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="RegulatoryMattersScheduleOfRegulatoryAssetsDetails" roleURI="http://pinnaclewest.com/role/RegulatoryMattersScheduleOfRegulatoryAssetsDetails">
        <link:definition>2403405 - Disclosure - Regulatory Matters - Schedule of Regulatory Assets (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="RegulatoryMattersScheduleOfRegulatoryLiabilitiesDetails" roleURI="http://pinnaclewest.com/role/RegulatoryMattersScheduleOfRegulatoryLiabilitiesDetails">
        <link:definition>2403406 - Disclosure - Regulatory Matters - Schedule of Regulatory Liabilities (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="RegulatoryMattersSettlementAgreementCostRecoveryMechanismAndNetMeteringDetails" roleURI="http://pinnaclewest.com/role/RegulatoryMattersSettlementAgreementCostRecoveryMechanismAndNetMeteringDetails">
        <link:definition>2403403 - Disclosure - Regulatory Matters - Settlement Agreement, Cost Recovery Mechanism and Net Metering (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="RegulatoryMattersTables" roleURI="http://pinnaclewest.com/role/RegulatoryMattersTables">
        <link:definition>2303301 - Disclosure - Regulatory Matters (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="RetirementPlansAndOtherPostretirementBenefits" roleURI="http://pinnaclewest.com/role/RetirementPlansAndOtherPostretirementBenefits">
        <link:definition>2104100 - Disclosure - Retirement Plans and Other Postretirement Benefits</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="RetirementPlansAndOtherPostretirementBenefitsNarrativeDetails" roleURI="http://pinnaclewest.com/role/RetirementPlansAndOtherPostretirementBenefitsNarrativeDetails">
        <link:definition>2404402 - Disclosure - Retirement Plans and Other Postretirement Benefits - Narrative (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="RetirementPlansAndOtherPostretirementBenefitsScheduleOfNetBenefitCostDetails" roleURI="http://pinnaclewest.com/role/RetirementPlansAndOtherPostretirementBenefitsScheduleOfNetBenefitCostDetails">
        <link:definition>2404403 - Disclosure - Retirement Plans and Other Postretirement Benefits - Schedule of Net Benefit Cost (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="RetirementPlansAndOtherPostretirementBenefitsTables" roleURI="http://pinnaclewest.com/role/RetirementPlansAndOtherPostretirementBenefitsTables">
        <link:definition>2304301 - Disclosure - Retirement Plans and Other Postretirement Benefits (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 abstract="true" id="pnw_A4CAcquisitionLLCMember" name="A4CAcquisitionLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_AG1DeferralMember" name="AG1DeferralMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_AZSunProgramPhase2Member" name="AZSunProgramPhase2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_AllRiskInsuranceForPropertyDamageAndDecontaminationAtPaloVerde" name="AllRiskInsuranceForPropertyDamageAndDecontaminationAtPaloVerde" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_AlternativetoAZSunProgramPhase1Member" name="AlternativetoAZSunProgramPhase1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_AlternativetoAZSunProgramPhase2Member" name="AlternativetoAZSunProgramPhase2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_AmortizationofPriorServiceCostandNetActuarialLossAbstract" name="AmortizationofPriorServiceCostandNetActuarialLossAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_AmountofAdjustmentRepresentingProratedSalesLossesApproved" name="AmountofAdjustmentRepresentingProratedSalesLossesApproved" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval" name="AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_AnnualLimitPerIncidentWithRespectToMaximumAssessment" name="AnnualLimitPerIncidentWithRespectToMaximumAssessment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_AnnualPaymentLimitationWithRespectToMaximumPotentialRetrospectiveAssessment" name="AnnualPaymentLimitationWithRespectToMaximumPotentialRetrospectiveAssessment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaCorporationCommissionMember" name="ArizonaCorporationCommissionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaPublicServiceCompanyMember" name="ArizonaPublicServiceCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaPublicServiceCompanyandPaloVerdeOwnersvs.UnitedStatesDepartmentofEnergySpentNuclearFuelandWasteDisposalMember" name="ArizonaPublicServiceCompanyandPaloVerdeOwnersvs.UnitedStatesDepartmentofEnergySpentNuclearFuelandWasteDisposalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaRenewableEnergyStandardAndTariff2014Member" name="ArizonaRenewableEnergyStandardAndTariff2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaRenewableEnergyStandardAndTariffMember" name="ArizonaRenewableEnergyStandardAndTariffMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaRenewableEnergyStandardandTariff2016Member" name="ArizonaRenewableEnergyStandardandTariff2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ArizonaRenewableEnergyStandardandTariff2017Member" name="ArizonaRenewableEnergyStandardandTariff2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_AssetNetBookValue" name="AssetNetBookValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_AssetPurchaseAgreementAdditionalPercentageShareofCostofControl" name="AssetPurchaseAgreementAdditionalPercentageShareofCostofControl" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate" name="AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_BoronInclusiononListofGroundwaterConstituentsMember" name="BoronInclusiononListofGroundwaterConstituentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_CashPaidDuringPeriodAbstract" name="CashPaidDuringPeriodAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_ChangeInMarginAndCollateralAccountsLiabilities" name="ChangeInMarginAndCollateralAccountsLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ChollaMember" name="ChollaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_CoalCombustionWasteMember" name="CoalCombustionWasteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_CoalReclamationMember" name="CoalReclamationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_CollateralAssuranceBasedOnRatingTriggers" name="CollateralAssuranceBasedOnRatingTriggers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ComponentOfOtherIncomeAndOtherExpenseNonoperatingTable" name="ComponentOfOtherIncomeAndOtherExpenseNonoperatingTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ComponentofOtherIncomeandOtherExpenseNonoperatingLineItems" name="ComponentofOtherIncomeandOtherExpenseNonoperatingLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ContaminatedGroundwaterWellsMember" name="ContaminatedGroundwaterWellsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_CostRecoveryMechanismsMember" name="CostRecoveryMechanismsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_CostsRelatedToInvestigationAndStudyUnderSuperfundSite" name="CostsRelatedToInvestigationAndStudyUnderSuperfundSite" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DebtProvisionsAbstract" name="DebtProvisionsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_DecommissioningFundInvestmentsFairValueNetPendingSecuritiesSalesandPurchases" name="DecommissioningFundInvestmentsFairValueNetPendingSecuritiesSalesandPurchases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pnw_DecommissioningFundInvestmentsGrossFairValue" name="DecommissioningFundInvestmentsGrossFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_DeferredCompensationMember" name="DeferredCompensationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DeferredCreditsMember" name="DeferredCreditsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DeferredFuelAndPurchasedPowerMTMCostsMember" name="DeferredFuelAndPurchasedPowerMTMCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent" name="DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_DeferredFuelAndPurchasedPowerRegulatoryAssetLiabilityRollForward" name="DeferredFuelAndPurchasedPowerRegulatoryAssetLiabilityRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DeferredFuelandPurchasedPowerMember" name="DeferredFuelandPurchasedPowerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_DeferredFuelandPurchasedPowerRegulatoryAssetLiabilityCurrent" name="DeferredFuelandPurchasedPowerRegulatoryAssetLiabilityCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_DeferredGainsonUtilityPropertyMember" name="DeferredGainsonUtilityPropertyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DeferredPropertyTaxesMember" name="DeferredPropertyTaxesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_DefinedBenefitPlanAmountofOtherPostretirementBenefitTrustAssetsforUnionEmployeeMedicalCosts" name="DefinedBenefitPlanAmountofOtherPostretirementBenefitTrustAssetsforUnionEmployeeMedicalCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_DefinedBenefitPlanEmployerContributionsAbstract" name="DefinedBenefitPlanEmployerContributionsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_DefinedBenefitPlansEstimatedFutureEmployerContributionsinNextThreeYears" name="DefinedBenefitPlansEstimatedFutureEmployerContributionsinNextThreeYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_DefinedBenefitPlansEstimatedMaximumFutureEmployerContributionsNextThreeFiscalYears" name="DefinedBenefitPlansEstimatedMaximumFutureEmployerContributionsNextThreeFiscalYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_DefinedBenefitPlansEstimatedMinimumFutureEmployerContributionsNextThreeFiscalYears" name="DefinedBenefitPlansEstimatedMinimumFutureEmployerContributionsNextThreeFiscalYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DemandSideManagementAdjustorCharge2015Member" name="DemandSideManagementAdjustorCharge2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DemandSideManagementAdjustorCharge2016Member" name="DemandSideManagementAdjustorCharge2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DemandSideManagementAdjustorCharge2017Member" name="DemandSideManagementAdjustorCharge2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DemandSideManagementMember" name="DemandSideManagementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_DerivativeAssetFairValueGrossLiabilityandNetPendingSecuritiesSalesandPurchases" name="DerivativeAssetFairValueGrossLiabilityandNetPendingSecuritiesSalesandPurchases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pnw_DerivativeAssetLiabilityAmountNotOffsetAgainstCollateral" name="DerivativeAssetLiabilityAmountNotOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_DerivativeAssetLiabilityFairValueAmountNotOffsetAgainstCollateral" name="DerivativeAssetLiabilityFairValueAmountNotOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_DerivativeAssetLiabilityFairValueGrossAssetLiability" name="DerivativeAssetLiabilityFairValueGrossAssetLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_DerivativeAssetLiabilityFairValueGrossLiabilityAssetandObligationtoReturnandRighttoReclaimCashOffset" name="DerivativeAssetLiabilityFairValueGrossLiabilityAssetandObligationtoReturnandRighttoReclaimCashOffset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pnw_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeOnDiscontinuation" name="DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeOnDiscontinuation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ElectricEnergyEfficiencyStandardMember" name="ElectricEnergyEfficiencyStandardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ElectricityContractsMember" name="ElectricityContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_EquityAndLongTermDebtLessCurrentMaturitiesAndLeaseback" name="EquityAndLongTermDebtLessCurrentMaturitiesAndLeaseback" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pnw_FairValueInputsElectricityForwardPricePerMegawattHours" name="FairValueInputsElectricityForwardPricePerMegawattHours" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_FairValueInputsGasForwardPricePerMetricMillionBritishThermalUnits" name="FairValueInputsGasForwardPricePerMetricMillionBritishThermalUnits" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeGainLossDeferredAsRegulatoryAssetOrLiability" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeGainLossDeferredAsRegulatoryAssetOrLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_FinancialAssurancesAbstract" name="FinancialAssurancesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_ForwardComponentOfPSARate" name="ForwardComponentOfPSARate" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_FourCornersCoalReclamationMember" name="FourCornersCoalReclamationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_FourCornersCostDeferralMember" name="FourCornersCostDeferralMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_FourCornersMember" name="FourCornersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_FourCornersUnits4And5Member" name="FourCornersUnits4And5Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_GainContingencyNewClaimsFiledNumber" name="GainContingencyNewClaimsFiledNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_GainContingencyNumberofSettlementAgreementTimePeriods" name="GainContingencyNumberofSettlementAgreementTimePeriods" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_GainonDispositionofPropertyPlantEquipment" name="GainonDispositionofPropertyPlantEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_GrossAssetsFairValueDisclosure" name="GrossAssetsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_GuarantorObligationsNumberofParentalGuarantees" name="GuarantorObligationsNumberofParentalGuarantees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_HistoricalComponentOfPSARate" name="HistoricalComponentOfPSARate" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization" name="IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_IncreaseinAmountofAdjustmentRepresentingProratedSalesLosses" name="IncreaseinAmountofAdjustmentRepresentingProratedSalesLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_IndustryLitigationPeriodtoCompleteRulemakingProceeding" name="IndustryLitigationPeriodtoCompleteRulemakingProceeding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_InvestmentsAndOtherAssetsAbstract" name="InvestmentsAndOtherAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_LetterofCreditExpiringin2016and2017Member" name="LetterofCreditExpiringin2016and2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_LettersofCreditExpiringin2019Member" name="LettersofCreditExpiringin2019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_LineOfCreditFacilityCommercialPaperProgramMaximumBorrowingCapacity" name="LineOfCreditFacilityCommercialPaperProgramMaximumBorrowingCapacity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pnw_LineOfCreditFacilityNumberOfAgreements" name="LineOfCreditFacilityNumberOfAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pnw_LossonDispositionofPropertyPlantEquipment" name="LossonDispositionofPropertyPlantEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_LostFixedCostRecoveryMechanismsMember" name="LostFixedCostRecoveryMechanismsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_LostFixedCostRecoveryMember" name="LostFixedCostRecoveryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_MaximumAmountthatCouldbeIncurredunderRetrospectiveAssessmentofNEILPolicies" name="MaximumAmountthatCouldbeIncurredunderRetrospectiveAssessmentofNEILPolicies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_MaximumAssessmentPerReactorForEachNuclearIncident" name="MaximumAssessmentPerReactorForEachNuclearIncident" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_MaximumAvailableNuclearLiabilityInsurance" name="MaximumAvailableNuclearLiabilityInsurance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_MaximumInsuranceCoveragePerIncident" name="MaximumInsuranceCoveragePerIncident" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_MaximumPotentialRetrospectiveAssessmentPerIncident" name="MaximumPotentialRetrospectiveAssessmentPerIncident" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_MeadPhoenixtransmissionlineCIACMember" name="MeadPhoenixtransmissionlineCIACMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_MiscellaneousOtherNonoperatingExpense" name="MiscellaneousOtherNonoperatingExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_MiscellaneousOtherNonoperatingIncome" name="MiscellaneousOtherNonoperatingIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ModernizationandExpansionoftheRenewalEnergyStandardMember" name="ModernizationandExpansionoftheRenewalEnergyStandardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_NaturalGasContractsMember" name="NaturalGasContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_NaturalGasTollingLetterOfCreditMember" name="NaturalGasTollingLetterOfCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_NavajoGeneratingStationMember" name="NavajoGeneratingStationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_NavajoPlantMember" name="NavajoPlantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_NetMeteringMember" name="NetMeteringMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_NonDerivativeCreditRiskContractAdditionalCollateralAggregateFairValue" name="NonDerivativeCreditRiskContractAdditionalCollateralAggregateFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_NonoperatingCosts" name="NonoperatingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_NonoperatingIncomeTaxExpenseBenefit" name="NonoperatingIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_NumberOfVIELessorTrusts" name="NumberOfVIELessorTrusts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_OffsettingAssetsAndLiabilitiesLineItems" name="OffsettingAssetsAndLiabilitiesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_OffsettingAssetsAndLiabilitiesTable" name="OffsettingAssetsAndLiabilitiesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_OffsettingDerivativeAssetsLiabilitiesNetAbstract" name="OffsettingDerivativeAssetsLiabilitiesNetAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_OpenAccessTransmissionTariffMember" name="OpenAccessTransmissionTariffMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_OperatingIncomeTaxExpenseBenefit" name="OperatingIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_OtherRegulatoryLiabilitiesMember" name="OtherRegulatoryLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PSARate" name="PSARate" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PSARateInPriorYears" name="PSARateInPriorYears" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_PensionMember" name="PensionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PercentageOfShareOfCostOfControl" name="PercentageOfShareOfCostOfControl" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PercentageOfUnrealizedGainsAndLossesOnCertainDerivativesDeferredForFutureRateTreatment" name="PercentageOfUnrealizedGainsAndLossesOnCertainDerivativesDeferredForFutureRateTreatment" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pnw_PeriodToProvideCollateralAssuranceBasedOnRatingTriggers" name="PeriodToProvideCollateralAssuranceBasedOnRatingTriggers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_PowerSupplyAdjustorMember" name="PowerSupplyAdjustorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesAdjustorAccountBalanceTransferredintoBaseRatesAmount" name="PublicUtilitiesAdjustorAccountBalanceTransferredintoBaseRatesAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesCostEffectiveEnergyEfficiencyProgramsNumberofDaystoConveneaWorkshop" name="PublicUtilitiesCostEffectiveEnergyEfficiencyProgramsNumberofDaystoConveneaWorkshop" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesCostEffectiveEnergyEfficiencyProgramsNumberofWorkshops" name="PublicUtilitiesCostEffectiveEnergyEfficiencyProgramsNumberofWorkshops" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesCurrentRenewalEnergyStandardPercentofRetailSales" name="PublicUtilitiesCurrentRenewalEnergyStandardPercentofRetailSales" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesMaximumAnnualRenewableEnergyStandardandTariff" name="PublicUtilitiesMaximumAnnualRenewableEnergyStandardandTariff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesMinimumAnnualRenewableEnergyStandardandTariff" name="PublicUtilitiesMinimumAnnualRenewableEnergyStandardandTariff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesNumberofEnergyStorageSystems" name="PublicUtilitiesNumberofEnergyStorageSystems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesNumberofHighSolarPenetrationFeeders" name="PublicUtilitiesNumberofHighSolarPenetrationFeeders" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesProposedRenewalEnergyStandardPercentofRetailSales" name="PublicUtilitiesProposedRenewalEnergyStandardPercentofRetailSales" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_PublicUtilitiesRegulatoryRegulatoryMattersAxis" name="PublicUtilitiesRegulatoryRegulatoryMattersAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_PublicUtilitiesRegulatoryRegulatoryMattersDomain" name="PublicUtilitiesRegulatoryRegulatoryMattersDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_PublicUtilitiesRequesttoBuildAdditionalUtilityScaleSolarCapacity" name="PublicUtilitiesRequesttoBuildAdditionalUtilityScaleSolarCapacity" nillable="true" substitutionGroup="xbrli:item" type="num:powerItemType" xbrli:periodType="instant" />
  <xsd:element id="pnw_PublicUtilityOrderCommonStockholdersEquityRatio" name="PublicUtilityOrderCommonStockholdersEquityRatio" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pnw_PublicUtilityOrderDividendRestrictionsShareholderEquity" name="PublicUtilityOrderDividendRestrictionsShareholderEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_PublicUtilityProgramAxis" name="PublicUtilityProgramAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_PublicUtilityProgramDomain" name="PublicUtilityProgramDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterAdditionalBudgetApproved" name="RateMatterAdditionalBudgetApproved" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_RateMatterApprovedBudget" name="RateMatterApprovedBudget" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_RateMatterApproximatePercentageOfIncreaseInAverageRetailCustomerBill" name="RateMatterApproximatePercentageOfIncreaseInAverageRetailCustomerBill" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterApproximatePercentageofIncreaseinAverageCustomerBill" name="RateMatterApproximatePercentageofIncreaseinAverageCustomerBill" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterApproximatePercentageofIncreaseinAverageResidentialCustomerBill" name="RateMatterApproximatePercentageofIncreaseinAverageResidentialCustomerBill" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterBaseFuelRateCurrent" name="RateMatterBaseFuelRateCurrent" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterCapPercentageOfRetailRevenue" name="RateMatterCapPercentageOfRetailRevenue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pnw_RateMatterEnvironmentalSurchargeCapRate" name="RateMatterEnvironmentalSurchargeCapRate" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterFixedCostRecoverablePerNonResidentialPowerLost" name="RateMatterFixedCostRecoverablePerNonResidentialPowerLost" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterFixedCostRecoverablePerResidentialPowerLost" name="RateMatterFixedCostRecoverablePerResidentialPowerLost" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterNumberofResourceSavingsProjects" name="RateMatterNumberofResourceSavingsProjects" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pnw_RateMatterPlanTerm" name="RateMatterPlanTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMatterProposedBudget" name="RateMatterProposedBudget" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_RateMatterResourceComparisonProxyforExportedEnergy" name="RateMatterResourceComparisonProxyforExportedEnergy" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMattersCostofServiceResourceComparisonProxyMethodMaximumAnnualPercentageDecrease" name="RateMattersCostofServiceResourceComparisonProxyMethodMaximumAnnualPercentageDecrease" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMattersCostofServiceforInterconnectedDGSystemCustomersGrandfatheredPeriod" name="RateMattersCostofServiceforInterconnectedDGSystemCustomersGrandfatheredPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMattersCostofServiceforNewCustomersGuaranteedExportPricePeriod" name="RateMattersCostofServiceforNewCustomersGuaranteedExportPricePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMattersDecreaseinCostRecovery" name="RateMattersDecreaseinCostRecovery" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_RateMattersIncreaseinCostRecovery" name="RateMattersIncreaseinCostRecovery" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RegionalHazeRulesMember" name="RegionalHazeRulesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent" name="RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_RegulatoryAssetNetBookValue" name="RegulatoryAssetNetBookValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_RegulatoryAssetNoncurrentAmortizationPeriod" name="RegulatoryAssetNoncurrentAmortizationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RegulatoryAssetsWriteoffAmount" name="RegulatoryAssetsWriteoffAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pnw_RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent" name="RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pnw_RegulatoryMattersTextBlock" name="RegulatoryMattersTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_RemainingNuclearLiabilityInsuranceThroughMandatoryIndustryWideRetrospectiveAssessmentProgram" name="RemainingNuclearLiabilityInsuranceThroughMandatoryIndustryWideRetrospectiveAssessmentProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ResidentialDemandResponseEnergyStorageandLoadManagementProgramMember" name="ResidentialDemandResponseEnergyStorageandLoadManagementProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RetailRateCaseFilingwithArizonaCorporationCommissionMember" name="RetailRateCaseFilingwithArizonaCorporationCommissionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RetiredPowerPlantCostsMember" name="RetiredPowerPlantCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RevolvingCreditFacilitiesMaturingin2020and2021Member" name="RevolvingCreditFacilitiesMaturingin2020and2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RevolvingCreditFacilityMaturingAugust2017Member" name="RevolvingCreditFacilityMaturingAugust2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RevolvingCreditFacilityMaturingMay2021Member" name="RevolvingCreditFacilityMaturingMay2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_RevolvingCreditFacilityMaturingSeptember2020Member" name="RevolvingCreditFacilityMaturingSeptember2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_SaleLeasebackTransactionLeasePeriod" name="SaleLeasebackTransactionLeasePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_SaleLeasebackTransactionNumberOfLeasesUnderWhichAssetsRetainedThroughSpecifiedPeriod" name="SaleLeasebackTransactionNumberOfLeasesUnderWhichAssetsRetainedThroughSpecifiedPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SaleLeasebackTransactionPeriod2016Through2023Member" name="SaleLeasebackTransactionPeriod2016Through2023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SaleLeasebackTransactionPeriod2024Through2033Member" name="SaleLeasebackTransactionPeriod2024Through2033Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SaleLeasebackTransactionPeriodAxis" name="SaleLeasebackTransactionPeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SaleLeasebackTransactionPeriodDomain" name="SaleLeasebackTransactionPeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SaleLeasebackTransactionPeriodThrough2023Member" name="SaleLeasebackTransactionPeriodThrough2023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SaleLeasebackTransactionPeriodThrough2033Member" name="SaleLeasebackTransactionPeriodThrough2033Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_ScheduleOfCommitmentsAndContingenciesTable" name="ScheduleOfCommitmentsAndContingenciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_ScheduleOfDeferredFuelAndPurchasedPowerRegulatoryAssetLiabilityTableTextBlock" name="ScheduleOfDeferredFuelAndPurchasedPowerRegulatoryAssetLiabilityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_ScheduleOfDerivativeCreditRiskRelatedContingentFeaturesTableTextBlock" name="ScheduleOfDerivativeCreditRiskRelatedContingentFeaturesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" name="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementBaseFuelRateProposed" name="SettlementAgreementBaseFuelRateProposed" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementBaseRateIncreaseChangesinDepreciationSchedules" name="SettlementAgreementBaseRateIncreaseChangesinDepreciationSchedules" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementFuelRelatedBaseRateDecrease" name="SettlementAgreementFuelRelatedBaseRateDecrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementNetRetailBaseRateIncrease" name="SettlementAgreementNetRetailBaseRateIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementNonFuelBaseRateIncrease" name="SettlementAgreementNonFuelBaseRateIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementNonFuelandNonDepreciationBaseRateIncrease" name="SettlementAgreementNonFuelandNonDepreciationBaseRateIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementReducedSystemBenefitsChargeAmount" name="SettlementAgreementReducedSystemBenefitsChargeAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementAgreementTransferOfCostRecoveryToBaseRates" name="SettlementAgreementTransferOfCostRecoveryToBaseRates" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_SettlementagreementACCapprovedrateadjustmentannualizedcustomerimpact" name="SettlementagreementACCapprovedrateadjustmentannualizedcustomerimpact" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_ShareholderEquityAndLongTermDebtAndCurrentMaturities" name="ShareholderEquityAndLongTermDebtAndCurrentMaturities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_SouthernCaliforniaEdisonCompanyMember" name="SouthernCaliforniaEdisonCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SpentNuclearFuelMember" name="SpentNuclearFuelMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_SundanceMaintenanceMember" name="SundanceMaintenanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_SuretyBondsExpiringAmount" name="SuretyBondsExpiringAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_TaxExpenseOfMedicareSubsidyMember" name="TaxExpenseOfMedicareSubsidyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_TotalDeferredDebits" name="TotalDeferredDebits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pnw_TotalInvestmentsAndOtherAssets" name="TotalInvestmentsAndOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pnw_TransmissionCostAdjustorMember" name="TransmissionCostAdjustorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_TransmissionTerminationAgreementNetReceiptDueToNegotiationOfAlternateArrangement" name="TransmissionTerminationAgreementNetReceiptDueToNegotiationOfAlternateArrangement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_USCommingledFundsMember" name="USCommingledFundsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_UnitedStatesFederalEnergyRegulatoryCommissionMember" name="UnitedStatesFederalEnergyRegulatoryCommissionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_UnsecuredSeniorNotes4.35PercentMatureon15November2045Member" name="UnsecuredSeniorNotes4.35PercentMatureon15November2045Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pnw_VariableInterestEntitiesAbstract" name="VariableInterestEntitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pnw_VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount" name="VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pnw_VariableInterestEntityEntityMaximumLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount" name="VariableInterestEntityEntityMaximumLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
</xsd:schema>
