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  <xsd:element id="pny_StockIssuedDuringThePeriodSharesRestrictedStockAwardsDividendReinvestment" name="StockIssuedDuringThePeriodSharesRestrictedStockAwardsDividendReinvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="pny_TargetPipelineInServiceDate" name="TargetPipelineInServiceDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="pny_TaxBenefitFromDividendsPaidOnESOPShares" name="TaxBenefitFromDividendsPaidOnESOPShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pny_TelecommunicationsAndTechnologyOutsourcingContractsMember" name="TelecommunicationsAndTechnologyOutsourcingContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pny_TennesseeIncentivePlanMember" name="TennesseeIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pny_TennesseeRegulatoryAuthorityMember" name="TennesseeRegulatoryAuthorityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pny_TotalContributionsToEquityMethodInvestmentsForProject" name="TotalContributionsToEquityMethodInvestmentsForProject" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pny_ValueOfIncentiveCompensationPlanAwardGross" name="ValueOfIncentiveCompensationPlanAwardGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pny_ValueOfIncentiveCompensationPlanAwardIssuedGross" name="ValueOfIncentiveCompensationPlanAwardIssuedGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pny_VoluntaryDeferralPlanMember" name="VoluntaryDeferralPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pny_WeatherNormalizationAdjustmentRiderMember" name="WeatherNormalizationAdjustmentRiderMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>