<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.vectren.com/20120930" xmlns:invest="http://xbrl.sec.gov/invest/2011-01-31" 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:us-types="http://fasb.org/us-types/2011-01-31" xmlns:vvc="http://www.vectren.com/20120930" 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/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-roles-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-types-2011-01-31.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/2011-01-31" schemaLocation="http://xbrl.sec.gov/country/2011/country-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2011-01-31" schemaLocation="http://xbrl.sec.gov/currency/2011/currency-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2011-01-31" schemaLocation="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2011-01-31" schemaLocation="http://xbrl.sec.gov/exch/2011/exch-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2011-01-31" schemaLocation="http://xbrl.sec.gov/invest/2011/invest-2011-01-31.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="vvc-20120930_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="vvc-20120930_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="vvc-20120930_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="vvc-20120930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="BasisOfPresentation" roleURI="http://www.vectren.com/role/BasisOfPresentation">
        <link:definition>2102100 - 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="CommitmentsAndContingencies" roleURI="http://www.vectren.com/role/CommitmentsAndContingencies">
        <link:definition>2109100 - 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="CommitmentsAndContingenciesDetails" roleURI="http://www.vectren.com/role/CommitmentsAndContingenciesDetails">
        <link:definition>2409401 - Disclosure - Commitments and Contingencies (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="ConsolidatedCondensedBalanceSheetsUnaudited" roleURI="http://www.vectren.com/role/ConsolidatedCondensedBalanceSheetsUnaudited">
        <link:definition>1001000 - Statement - CONSOLIDATED CONDENSED 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="ConsolidatedCondensedBalanceSheetsUnauditedParenthetical" roleURI="http://www.vectren.com/role/ConsolidatedCondensedBalanceSheetsUnauditedParenthetical">
        <link:definition>1001501 - Statement - CONSOLIDATED CONDENSED 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="ConsolidatedCondensedStatementsOfCashFlowsUnaudited" roleURI="http://www.vectren.com/role/ConsolidatedCondensedStatementsOfCashFlowsUnaudited">
        <link:definition>1004000 - Statement - CONSOLIDATED CONDENSED 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="ConsolidatedCondensedStatementsOfComprehensiveIncomeUnaudited" roleURI="http://www.vectren.com/role/ConsolidatedCondensedStatementsOfComprehensiveIncomeUnaudited">
        <link:definition>1003000 - Statement - CONSOLIDATED CONDENSED 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="ConsolidatedCondensedStatementsOfIncomeUnaudited" roleURI="http://www.vectren.com/role/ConsolidatedCondensedStatementsOfIncomeUnaudited">
        <link:definition>1002000 - Statement - CONSOLIDATED CONDENSED 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="DocumentAndEntityInformation" roleURI="http://www.vectren.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://www.vectren.com/role/EarningsPerShare">
        <link:definition>2103100 - 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://www.vectren.com/role/EarningsPerShareDetails">
        <link:definition>2403402 - 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://www.vectren.com/role/EarningsPerShareTables">
        <link:definition>2303301 - 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="EnvironmentalMatters" roleURI="http://www.vectren.com/role/EnvironmentalMatters">
        <link:definition>2111100 - Disclosure - Environmental 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="EnvironmentalMattersDetails" roleURI="http://www.vectren.com/role/EnvironmentalMattersDetails">
        <link:definition>2411401 - Disclosure - Environmental Matters (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="ExciseAndUtilityReceiptsTaxes" roleURI="http://www.vectren.com/role/ExciseAndUtilityReceiptsTaxes">
        <link:definition>2104100 - Disclosure - Excise and Utility Receipts Taxes</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="ExciseAndUtilityReceiptsTaxesDetails" roleURI="http://www.vectren.com/role/ExciseAndUtilityReceiptsTaxesDetails">
        <link:definition>2404401 - Disclosure - Excise and Utility Receipts Taxes (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="FairValueMeasurements" roleURI="http://www.vectren.com/role/FairValueMeasurements">
        <link:definition>2114100 - 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="FairValueMeasurementsDetails" roleURI="http://www.vectren.com/role/FairValueMeasurementsDetails">
        <link:definition>2414402 - Disclosure - Fair Value Measurements (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="FairValueMeasurementsTables" roleURI="http://www.vectren.com/role/FairValueMeasurementsTables">
        <link:definition>2314301 - 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="FinancingActivities" roleURI="http://www.vectren.com/role/FinancingActivities">
        <link:definition>2108100 - Disclosure - Financing Activities</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="FinancingActivitiesDetails" roleURI="http://www.vectren.com/role/FinancingActivitiesDetails">
        <link:definition>2408401 - Disclosure - Financing Activities (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="ImpactOfRecentlyIssuedAccountingPrinciples" roleURI="http://www.vectren.com/role/ImpactOfRecentlyIssuedAccountingPrinciples">
        <link:definition>2113100 - Disclosure - Impact of Recently Issued Accounting Principles</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="LegislativeMatters" roleURI="http://www.vectren.com/role/LegislativeMatters">
        <link:definition>2110100 - Disclosure - Legislative 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="LegislativeMattersDetails" roleURI="http://www.vectren.com/role/LegislativeMattersDetails">
        <link:definition>2410401 - Disclosure - Legislative Matters (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="OrganizationAndNatureOfOperations" roleURI="http://www.vectren.com/role/OrganizationAndNatureOfOperations">
        <link:definition>2101100 - Disclosure - Organization 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="OrganizationAndNatureOfOperationsDetails" roleURI="http://www.vectren.com/role/OrganizationAndNatureOfOperationsDetails">
        <link:definition>2401401 - Disclosure - Organization 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="ProlianceHoldingsLlc" roleURI="http://www.vectren.com/role/ProlianceHoldingsLlc">
        <link:definition>2107100 - Disclosure - ProLiance Holdings, LLC</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="ProlianceHoldingsLlcDetails" roleURI="http://www.vectren.com/role/ProlianceHoldingsLlcDetails">
        <link:definition>2407402 - Disclosure - ProLiance Holdings, LLC (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="ProlianceHoldingsLlcTables" roleURI="http://www.vectren.com/role/ProlianceHoldingsLlcTables">
        <link:definition>2307301 - Disclosure - ProLiance Holdings, LLC (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="RateRegulatoryMatters" roleURI="http://www.vectren.com/role/RateRegulatoryMatters">
        <link:definition>2112100 - Disclosure - Rate &amp; 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="RateRegulatoryMattersDetails" roleURI="http://www.vectren.com/role/RateRegulatoryMattersDetails">
        <link:definition>2412401 - Disclosure - Rate &amp; Regulatory Matters (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="RetirementPlansAndOtherPostretirementBenefits" roleURI="http://www.vectren.com/role/RetirementPlansAndOtherPostretirementBenefits">
        <link:definition>2105100 - 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="RetirementPlansAndOtherPostretirementBenefitsDetails" roleURI="http://www.vectren.com/role/RetirementPlansAndOtherPostretirementBenefitsDetails">
        <link:definition>2405402 - Disclosure - Retirement Plans and Other Postretirement Benefits (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://www.vectren.com/role/RetirementPlansAndOtherPostretirementBenefitsTables">
        <link:definition>2305301 - 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>
      <link:roleType id="SegmentReporting" roleURI="http://www.vectren.com/role/SegmentReporting">
        <link:definition>2115100 - Disclosure - Segment Reporting</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="SegmentReportingDetails" roleURI="http://www.vectren.com/role/SegmentReportingDetails">
        <link:definition>2415402 - Disclosure - Segment Reporting (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="SegmentReportingTables" roleURI="http://www.vectren.com/role/SegmentReportingTables">
        <link:definition>2315301 - Disclosure - Segment Reporting (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="SupplementalCashFlowInformation" roleURI="http://www.vectren.com/role/SupplementalCashFlowInformation">
        <link:definition>2106100 - Disclosure - Supplemental Cash Flow 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="SupplementalCashFlowInformationDetails" roleURI="http://www.vectren.com/role/SupplementalCashFlowInformationDetails">
        <link:definition>2406401 - Disclosure - Supplemental Cash Flow Information (Details)</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="vvc_AccountsPayableAffiliatedCompany1Current" name="AccountsPayableAffiliatedCompany1Current" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AccruedUnbilledRevenues" name="AccruedUnbilledRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AllowancesForNoxAndSo2Granted" name="AllowancesForNoxAndSo2Granted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AmountOfCapitalInvestmentBySigeco" name="AmountOfCapitalInvestmentBySigeco" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AmountOfCurrentDebtThatHasBeenReclassifiedToLongTermDebt" name="AmountOfCurrentDebtThatHasBeenReclassifiedToLongTermDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AmountOfExpectedCapitalInvestmentInvestedToDate" name="AmountOfExpectedCapitalInvestmentInvestedToDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_AmountOfRateBaseIncludedInRateIncrease" name="AmountOfRateBaseIncludedInRateIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AmountOfRateOfReturnOnEquityIncludedInRateBaseInHundredths" name="AmountOfRateOfReturnOnEquityIncludedInRateBaseInHundredths" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_AnnualExpendituresLimitForSpecialAccountingTreatment" name="AnnualExpendituresLimitForSpecialAccountingTreatment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_AnnualExpendituresOfExpandedConservationProgram" name="AnnualExpendituresOfExpandedConservationProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_ApproximateNumberOfCustomersInTranche" name="ApproximateNumberOfCustomersInTranche" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_AshPondsAndCoalAshDisposalRegulationsAbstract" name="AshPondsAndCoalAshDisposalRegulationsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_AuthorizedIncreaseInRevenueFromUtilityService" name="AuthorizedIncreaseInRevenueFromUtilityService" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_BaseRateIncreaseFiledWithIurcForCapitalInvestments" name="BaseRateIncreaseFiledWithIurcForCapitalInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_BaseRateRecoveryOfConservationProgramSpending" name="BaseRateRecoveryOfConservationProgramSpending" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_BasisOfPresentationAbstract" name="BasisOfPresentationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_BasisOfPresentationTextBlock" name="BasisOfPresentationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_CapitalExpensdituresDrivenByLegislation" name="CapitalExpensdituresDrivenByLegislation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_CleanWaterActAbstract" name="CleanWaterActAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ClimateChangesAbstract" name="ClimateChangesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_CoalMiningMember" name="CoalMiningMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ComprehensiveIncomeLossOfUnconsolidatedAffiliatesBeforeTax" name="ComprehensiveIncomeLossOfUnconsolidatedAffiliatesBeforeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_CorporateAndOtherGroupMember" name="CorporateAndOtherGroupMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_CostOfDeferedCapitalExpenditureProgram" name="CostOfDeferedCapitalExpenditureProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_CostOfGasSold" name="CostOfGasSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_CostOfMostOfAllowancesGrantedToCompanyForInventoryUsageOfNoxAndCo2" name="CostOfMostOfAllowancesGrantedToCompanyForInventoryUsageOfNoxAndCo2" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_CostRecoveryProvidedForSeperately" name="CostRecoveryProvidedForSeperately" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_CumulativeTotalDeferralsRelatedToCoalPurchases" name="CumulativeTotalDeferralsRelatedToCoalPurchases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_CurrentPortionOfLongTermDebtThatWillEitherBeRefinancedOrRetired" name="CurrentPortionOfLongTermDebtThatWillEitherBeRefinancedOrRetired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_CustomerPercentageCoveredByCustomerServiceCharge" name="CustomerPercentageCoveredByCustomerServiceCharge" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_DebtInstrumentCallDatePlanned" name="DebtInstrumentCallDatePlanned" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_DebtInstrumentMaturityDateYear" name="DebtInstrumentMaturityDateYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_DecreaseInRegulatoryAssetDeferredTaxLiabilities" name="DecreaseInRegulatoryAssetDeferredTaxLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_Decreaseinrecordedliabilityfromremeasurement" name="Decreaseinrecordedliabilityfromremeasurement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_DeferralsRelatedToCoalPurchasesInCurrentYear" name="DeferralsRelatedToCoalPurchasesInCurrentYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_DenominatorAbstract" name="DenominatorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_DescriptionOfGoalOfProgram" name="DescriptionOfGoalOfProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_DescriptionOfLegislation" name="DescriptionOfLegislation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_DiscountRateForRemeasrurement" name="DiscountRateForRemeasrurement" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ElectricUtilityServicesMember" name="ElectricUtilityServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnergyMarketingMember" name="EnergyMarketingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnergyServicesMember" name="EnergyServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnvironmentalMattersDisclosureAbstract" name="EnvironmentalMattersDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EnvironmentalMattersDisclosureTextBlock" name="EnvironmentalMattersDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnvironmentalRemediationAbstract" name="EnvironmentalRemediationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnvironmentalRemediationByEntityAxis" name="EnvironmentalRemediationByEntityAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnvironmentalRemediationByEntityDomain" name="EnvironmentalRemediationByEntityDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_EnvironmentalRemediationEffortsAbstract" name="EnvironmentalRemediationEffortsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EnvironmentalRemediationNumberOfSitesWithPotentialRemedialResponsibility" name="EnvironmentalRemediationNumberOfSitesWithPotentialRemedialResponsibility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_EnvironmentalRemediationNumberOfSitesWithRemedialResponsibilityWithArrangementsInPlace" name="EnvironmentalRemediationNumberOfSitesWithRemedialResponsibilityWithArrangementsInPlace" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_EnvironmentalRemediationRangeOfCostResponsibilityToCleanupMaximumPercentage" name="EnvironmentalRemediationRangeOfCostResponsibilityToCleanupMaximumPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_EnvironmentalRemediationRangeOfCostResponsibilityToCleanupMinimumPercentage" name="EnvironmentalRemediationRangeOfCostResponsibilityToCleanupMinimumPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_EpaIdentifiedSourcesOfHistoricLeadContamination" name="EpaIdentifiedSourcesOfHistoricLeadContamination" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EquityMethodInvestmentMinorityInterestInJointVentures" name="EquityMethodInvestmentMinorityInterestInJointVentures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_EquityMethodInvestmentMinorityInterestOwnershipPercentageByNoncontrollingOwners" name="EquityMethodInvestmentMinorityInterestOwnershipPercentageByNoncontrollingOwners" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_EquityMethodInvestmentProfitAndLossOwnershipPercentage" name="EquityMethodInvestmentProfitAndLossOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_EquityMethodInvestmentSummarizedBalanceSheetInformationAbstract" name="EquityMethodInvestmentSummarizedBalanceSheetInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EquityMethodInvestmentSummarizedFinancialInformationAccumulatedOtherComprehensiveIncome" name="EquityMethodInvestmentSummarizedFinancialInformationAccumulatedOtherComprehensiveIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_EquityMethodInvestmentSummarizedFinancialInformationMembersEquity" name="EquityMethodInvestmentSummarizedFinancialInformationMembersEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_Equitymethodinvestmentsummarizedfinancialinformationchargerelatedtoinvestmentingasstorage" name="Equitymethodinvestmentsummarizedfinancialinformationchargerelatedtoinvestmentingasstorage" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedAmountOfOperatingExpenseAssociatedWithExpandedCompliance" name="EstimatedAmountOfOperatingExpenseAssociatedWithExpandedCompliance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedAmountThatWouldQualifyForTimelyRecovery" name="EstimatedAmountThatWouldQualifyForTimelyRecovery" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedAnnualComplianceCostsMaximumWithAshPondAndCoalAshDisposalRegulation" name="EstimatedAnnualComplianceCostsMaximumWithAshPondAndCoalAshDisposalRegulation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_EstimatedCapitalExpendituresRelatedToCleanWaterAct" name="EstimatedCapitalExpendituresRelatedToCleanWaterAct" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_EstimatedCapitalExpendituresToComplyWithAshPondAndCoalAshDisposalRegulations" name="EstimatedCapitalExpendituresToComplyWithAshPondAndCoalAshDisposalRegulations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_EstimatedIncrementalOperatingExpensesNotRecoverableWithoutRateProceeding" name="EstimatedIncrementalOperatingExpensesNotRecoverableWithoutRateProceeding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedNumberOfElectricCustomersServicedBySubsidiary2" name="EstimatedNumberOfElectricCustomersServicedBySubsidiary2" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedNumberOfNaturalGasCustomersServicedBySubsidiary1" name="EstimatedNumberOfNaturalGasCustomersServicedBySubsidiary1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedNumberOfNaturalGasCustomersServicedBySubsidiary2" name="EstimatedNumberOfNaturalGasCustomersServicedBySubsidiary2" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_EstimatedNumberOfNaturalGasCustomersServicedByTenancyInCommon" name="EstimatedNumberOfNaturalGasCustomersServicedByTenancyInCommon" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ExciseAndUtilityReceiptsTaxesAbstract" name="ExciseAndUtilityReceiptsTaxesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ExciseAndUtilityReceiptsTaxesTextBlock" name="ExciseAndUtilityReceiptsTaxesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ExpectedCapitalInvestmentToImproveEfficiencyOfGeneratingStation" name="ExpectedCapitalInvestmentToImproveEfficiencyOfGeneratingStation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_ExpectedIncreaseInEfficiencyForGeneratingStationFollowingImprovement" name="ExpectedIncreaseInEfficiencyForGeneratingStationFollowingImprovement" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_GasBaseRateOrderReceivedAbstract" name="GasBaseRateOrderReceivedAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_GasUtilityServicesMember" name="GasUtilityServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_GroupEliminationsMember" name="GroupEliminationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_GuaranteeObligationsOfOtherOperatingCompanyOperationsByParentCompany" name="GuaranteeObligationsOfOtherOperatingCompanyOperationsByParentCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_GuaranteeObligationsOfSingleSubsidiaryOtherProjectGuaranteeMaximumExposureByParentCompany" name="GuaranteeObligationsOfSingleSubsidiaryOtherProjectGuaranteeMaximumExposureByParentCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_GuaranteeObligationsSupportingNonutilityRetailGasOperationsByParentCompany" name="GuaranteeObligationsSupportingNonutilityRetailGasOperationsByParentCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_GuaranteeObligationsSupportingUnconsolidatedAffiliateOperationsByParentCompany" name="GuaranteeObligationsSupportingUnconsolidatedAffiliateOperationsByParentCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_GuaranteesForEsgMember" name="GuaranteesForEsgMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_GuaranteesForOtherUnconsolidatedAffiliatesMember" name="GuaranteesForOtherUnconsolidatedAffiliatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_GuaranteesForVectrenSourceMember" name="GuaranteesForVectrenSourceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_GuarantorObligationRelatedPartyAxis" name="GuarantorObligationRelatedPartyAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_GuarantorObligationsByRelatedPartyDomain" name="GuarantorObligationsByRelatedPartyDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ImpactOfRecentlyIssuedAccountingPrinciplesAbstract" name="ImpactOfRecentlyIssuedAccountingPrinciplesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ImpactOfRecentlyIssuedAccountingPrinciplesDisclosureTextBlock" name="ImpactOfRecentlyIssuedAccountingPrinciplesDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ImpairmentChargeRecordedByInvesteeOfCompanysEquityMethodInvestments" name="ImpairmentChargeRecordedByInvesteeOfCompanysEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_ImpairmentChargeRecordedByOneOfCompaniesEquityMethodInvestments" name="ImpairmentChargeRecordedByOneOfCompaniesEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_IncreaseDecreaseInAccountsReceivableAndAccruedUnbilledRevenues" name="IncreaseDecreaseInAccountsReceivableAndAccruedUnbilledRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsUsingMixedCalculationMethod" name="IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsUsingMixedCalculationMethod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_IndianaGasMember" name="IndianaGasMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_IndianaHouseBill1004Member" name="IndianaHouseBill1004Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_IndianaMember" name="IndianaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_IndianaSenateBill251Abstract" name="IndianaSenateBill251Abstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_IndianaSenateBill251Member" name="IndianaSenateBill251Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_InfastructureServicesMember" name="InfastructureServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_LegislativeActionNameDomain" name="LegislativeActionNameDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_LegislativeMattersByLegislativeActionAxis" name="LegislativeMattersByLegislativeActionAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_LegislativeMattersDisclosureAbstract" name="LegislativeMattersDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_LegislativeMattersDisclosureTextBlock" name="LegislativeMattersDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_LegislativeMattersLineItems" name="LegislativeMattersLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_LegislativeMattersTable" name="LegislativeMattersTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_LengthOfSupplierContractForNaturalGasCustomer" name="LengthOfSupplierContractForNaturalGasCustomer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_LettersOfCreditSupportingNonutilityOperationsByParentCompany" name="LettersOfCreditSupportingNonutilityOperationsByParentCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_LimitationOfSpecialAccountingTreatmentInYears" name="LimitationOfSpecialAccountingTreatmentInYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_LoanTermInYears" name="LoanTermInYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_LongTermContractForPurchaseElectricPowerGeneratedFromWindEnergy" name="LongTermContractForPurchaseElectricPowerGeneratedFromWindEnergy" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_LongTermDebtNetOfCurrentMaturitiesAndDebtSubjectToTender" name="LongTermDebtNetOfCurrentMaturitiesAndDebtSubjectToTender" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_LongTermDebtSubjectToTender" name="LongTermDebtSubjectToTender" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_LossContingencyGrossDamagesSoughtForSubLeaseAgreement" name="LossContingencyGrossDamagesSoughtForSubLeaseAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_MajorityOwnershipPercentageOfTenancyInCommonOwnedByWhollyOwnedSubsidiaryOfSubsidiaryHoldingCompany" name="MajorityOwnershipPercentageOfTenancyInCommonOwnedByWhollyOwnedSubsidiaryOfSubsidiaryHoldingCompany" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_MaximumDeferralOfLostMarginAssociatedWithSmallCustomerDemandSidePrograms" name="MaximumDeferralOfLostMarginAssociatedWithSmallCustomerDemandSidePrograms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_MaximumFineForSafetyVioulationsUnderPipelineSafetyAct" name="MaximumFineForSafetyVioulationsUnderPipelineSafetyAct" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_MaximumLevelOfGreenhouseGasEmissionToPromptNeedForPermitByFacilities" name="MaximumLevelOfGreenhouseGasEmissionToPromptNeedForPermitByFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_MinorityOwnershipPercentageOfTenancyInCommonOwnedByWhollyOwnedSubsidiaryOfSubsidiaryHoldingCompany" name="MinorityOwnershipPercentageOfTenancyInCommonOwnedByWhollyOwnedSubsidiaryOfSubsidiaryHoldingCompany" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_NonutilityGroupMember" name="NonutilityGroupMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_NumberOfAuctionsRequirementRelatedToPlanApprovedByPucoInNumberOfAuctions" name="NumberOfAuctionsRequirementRelatedToPlanApprovedByPucoInNumberOfAuctions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfOperatingSegmentsInNonutilityGroup" name="NumberOfOperatingSegmentsInNonutilityGroup" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfOtherPostretirementBenefitPlans" name="NumberOfOtherPostretirementBenefitPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfPrimaryBusinessAreas" name="NumberOfPrimaryBusinessAreas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_NumberOfPublicUtilitySubsidiariesOwnedByWhollyOwnedSubsidiaryOfCompany" name="NumberOfPublicUtilitySubsidiariesOwnedByWhollyOwnedSubsidiaryOfCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_NumberOfQualifiedDefinedBenefitPensionPlans1" name="NumberOfQualifiedDefinedBenefitPensionPlans1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfReportingSegments" name="NumberOfReportingSegments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfSegments" name="NumberOfSegments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfSitesOwnedOperatedAndEnrolledInIdemVrp" name="NumberOfSitesOwnedOperatedAndEnrolledInIdemVrp" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfSuretyBondObligationsOutstandingForWhollyOwnedSubsidiary" name="NumberOfSuretyBondObligationsOutstandingForWhollyOwnedSubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfTranchesOfCustomersSecuredInFirstAuction" name="NumberOfTranchesOfCustomersSecuredInFirstAuction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfTranchesOfCustomersSecuredInSecondAuction" name="NumberOfTranchesOfCustomersSecuredInSecondAuction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfYearsForRecoveryOfCoalCosts" name="NumberOfYearsForRecoveryOfCoalCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_NumberOfYearsInCapitalImprovementProgram" name="NumberOfYearsInCapitalImprovementProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_NumberOfYearsInInitialDemandSideManagementProgram" name="NumberOfYearsInInitialDemandSideManagementProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_NumberOfYearsRecoveryOfRegulatoryAsset" name="NumberOfYearsRecoveryOfRegulatoryAsset" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_NumeratorAbstract" name="NumeratorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_OhioHouseBill95Member" name="OhioHouseBill95Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_OhioMember" name="OhioMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_OperationByStateAxis" name="OperationByStateAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_OrganizationAndNatureOfOperationsAbstract" name="OrganizationAndNatureOfOperationsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_OtherBusinessesMember" name="OtherBusinessesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_OtherCases" name="OtherCases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_OtherNonutilityInvestments" name="OtherNonutilityInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_OtherOperationsMember" name="OtherOperationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_OtherUtilityAndCorporateInvestments" name="OtherUtilityAndCorporateInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_PercentageOfCoalFiredGeneratingFleetControlledForNOx" name="PercentageOfCoalFiredGeneratingFleetControlledForNOx" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PercentageOfCoalFiredGeneratingFleetScrubbedForSo2" name="PercentageOfCoalFiredGeneratingFleetScrubbedForSo2" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PercentageOfTotalElectricityObtainedBySupplierToMeetEnergyNeedsOfItsRetailCustomersProvidedByCleanEnergySourcesInHundredths" name="PercentageOfTotalElectricityObtainedBySupplierToMeetEnergyNeedsOfItsRetailCustomersProvidedByCleanEnergySourcesInHundredths" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PercentageOfWorkCompletedOnProjectsWithOpenSuretyBonds" name="PercentageOfWorkCompletedOnProjectsWithOpenSuretyBonds" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PercentageReductionInNoxPerCrossStateAirPolloutionRule" name="PercentageReductionInNoxPerCrossStateAirPolloutionRule" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PercentageReductionInSo2PerCrossStateAirPolloutionRule" name="PercentageReductionInSo2PerCrossStateAirPolloutionRule" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PerformanceGuaranteeObligationsOutstandingAverageFaceAmount" name="PerformanceGuaranteeObligationsOutstandingAverageFaceAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_PerformanceGuaranteeObligationsOutstandingMaximumFaceAmount" name="PerformanceGuaranteeObligationsOutstandingMaximumFaceAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_PerformanceGuaranteesProductWarrantiesAbstract" name="PerformanceGuaranteesProductWarrantiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_PeriodInWhichRecoveryBegins" name="PeriodInWhichRecoveryBegins" nillable="true" substitutionGroup="xbrli:item" type="invest:dateStringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_PeriodOverWhichCallPremiumOnReacquisitionOfLongTermDebt" name="PeriodOverWhichCallPremiumOnReacquisitionOfLongTermDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PeriodOverWhichCapitalExpendituresWouldAccumulate" name="PeriodOverWhichCapitalExpendituresWouldAccumulate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_PipelineSafetyLawAbstract" name="PipelineSafetyLawAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_PipelineSafetyLawMember" name="PipelineSafetyLawMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_PortionOfIndianaThatIsProvidedNaturalGasDistributionAndTransportationServicesByGasUtilityServicesSegment" name="PortionOfIndianaThatIsProvidedNaturalGasDistributionAndTransportationServicesByGasUtilityServicesSegment" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PotentialEstimatedCapitalExpendituresToComplyWithAshPondAndCoalAshDisposalRegulationsWithMostStringentAlternative" name="PotentialEstimatedCapitalExpendituresToComplyWithAshPondAndCoalAshDisposalRegulationsWithMostStringentAlternative" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_PowerGeneratingCapacityOfAcquiredLandfillGasGenerationFacility" name="PowerGeneratingCapacityOfAcquiredLandfillGasGenerationFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PrepaymentsAndOtherCurrentAssets" name="PrepaymentsAndOtherCurrentAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_ProceedsFromFinancingActivitiesAbstract" name="ProceedsFromFinancingActivitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ProcessToExitMerchantFunctionAbstract" name="ProcessToExitMerchantFunctionAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ProductPerformanceWarrantyPeriodInfrastructure" name="ProductPerformanceWarrantyPeriodInfrastructure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ProlianceHoldingsLlcAbstract" name="ProlianceHoldingsLlcAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_ProlianceHoldingsLlcMember" name="ProlianceHoldingsLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_PublicUtilitiesAccrualsForPurchaseOfUtilityAndNonUtilityPlantAssets" name="PublicUtilitiesAccrualsForPurchaseOfUtilityAndNonUtilityPlantAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_PublicUtilitiesPropertyPlantAndEquipmentAmountOfInvestmentInPollutionControlEquipmentIncludedInRateBase" name="PublicUtilitiesPropertyPlantAndEquipmentAmountOfInvestmentInPollutionControlEquipmentIncludedInRateBase" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_PublicUtilitiesPropertyPlantAndEquipmentPollutionControlEquipment" name="PublicUtilitiesPropertyPlantAndEquipmentPollutionControlEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_PurchaseElectricPowerGeneratedFromWindEnergy" name="PurchaseElectricPowerGeneratedFromWindEnergy" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_PurchaseGuaranteeObligationsTermRemaingForSignificantPortionToBeFulfilled" name="PurchaseGuaranteeObligationsTermRemaingForSignificantPortionToBeFulfilled" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_RateAndRegulatoryMattersAbstract" name="RateAndRegulatoryMattersAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_RateIncreaseProvidedForByPuco" name="RateIncreaseProvidedForByPuco" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_RateOfReturnOnRateBase" name="RateOfReturnOnRateBase" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_RateOfReturnProvidedByApprovedRateIncreaseInHundredths" name="RateOfReturnProvidedByApprovedRateIncreaseInHundredths" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_ReductionToCoalInventoryBalanceRelatedToDeferral" name="ReductionToCoalInventoryBalanceRelatedToDeferral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_RefundableFuelAndNaturalGasCosts" name="RefundableFuelAndNaturalGasCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_Remeasurementofpostretirementbenefitobligation" name="Remeasurementofpostretirementbenefitobligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_RequirementsForFinancingActivitiesAbstract" name="RequirementsForFinancingActivitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_RequirementsForInvestingActivitiesAbstract" name="RequirementsForInvestingActivitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_RevenueFromDecouplingMechanismThatDidNotContinue" name="RevenueFromDecouplingMechanismThatDidNotContinue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_SeniorGuaranteedNoteDue2011Member" name="SeniorGuaranteedNoteDue2011Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_SeniorGuaranteedNoteDue2021Member" name="SeniorGuaranteedNoteDue2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_SeniorGuaranteedNoteDue2026Member" name="SeniorGuaranteedNoteDue2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_SeniorGuaranteedNoteDue2036Member" name="SeniorGuaranteedNoteDue2036Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_SeniorGuaranteedNoteDue2041Member" name="SeniorGuaranteedNoteDue2041Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_SeniorGuaranteedNoteDue2042Member" name="SeniorGuaranteedNoteDue2042Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_ShortTermBorrowingsAndNotesPayableFairValueDisclosure" name="ShortTermBorrowingsAndNotesPayableFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_ShortTermBorrowingsFairValueDisclosure" name="ShortTermBorrowingsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_SigecoMember" name="SigecoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_SigecoSiteContingencyCumulativeCostsAmount" name="SigecoSiteContingencyCumulativeCostsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_SiteContingencyAccrual" name="SiteContingencyAccrual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="vvc_SiteContingencyRecoveryFromInsuranceCarriersOfEnvironmentalRemediationCost" name="SiteContingencyRecoveryFromInsuranceCarriersOfEnvironmentalRemediationCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vvc_StateNameDomain" name="StateNameDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_SubsequentEventEquityMethodInvestmentDividendPayableAmount" name="SubsequentEventEquityMethodInvestmentDividendPayableAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="vvc_SummarizedFinancialInformation" name="SummarizedFinancialInformation" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_SuperfundSite1Abstract" name="SuperfundSite1Abstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="vvc_TargetedGoalPercentageOfTotalElectricityObtainedBySupplierToMeetEnergyNeedsOfItsRetailCustomersProvidedByCleanEnergySourcesInHundredths" name="TargetedGoalPercentageOfTotalElectricityObtainedBySupplierToMeetEnergyNeedsOfItsRetailCustomersProvidedByCleanEnergySourcesInHundredths" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="vvc_TaxesOtherThanIncomeTaxes" name="TaxesOtherThanIncomeTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="vvc_TermLoanInterestRate" name="TermLoanInterestRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_TermLoanMember" name="TermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_UtilityGroupMember" name="UtilityGroupMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VectrenCapitalMember" name="VectrenCapitalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VectrenSouthElectricBaseRateFilingAbstract" name="VectrenSouthElectricBaseRateFilingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VectrenSouthElectricDemandSideManagementProgramFiling" name="VectrenSouthElectricDemandSideManagementProgramFiling" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VectrenSouthElectricDensePackFilingAbstract" name="VectrenSouthElectricDensePackFilingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VectrenSouthElectricFuelCostReduction" name="VectrenSouthElectricFuelCostReduction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VectrenUtilityHoldingsIncMember" name="VectrenUtilityHoldingsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vvc_VedoGasBaseRateOrderReceivedAbstract" name="VedoGasBaseRateOrderReceivedAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
</xsd:schema>
