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 -Publisher AICPA
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 -Number 51
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      <ElementPrefix>us-gaap</ElementPrefix>
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      <BalanceType>credit</BalanceType>
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      <ShortDefinition>No definition available.</ShortDefinition>
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      <IsSegmentTitle>false</IsSegmentTitle>
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      <PreferredLabelRole>verboselabel</PreferredLabelRole>
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          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
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      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:monetaryItemType</ElementDataType>
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      <ElementDefenition>Quantifies the entity's maximum exposure to loss.</ElementDefenition>
      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name FASB Staff Position (FSP)
 -Number FAS140-4 and FIN46(R)-8
 -Paragraph C6
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      <FootnoteIndexer />
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          <NonNumericTextHeader />
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      <OriginalInstanceReportColumns />
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    <Row>
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      <OriginalInstanceReportColumns />
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      <ElementName />
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      <BalanceType>na</BalanceType>
      <PeriodType>na</PeriodType>
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      <FootnoteIndexer />
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      </Cells>
      <OriginalInstanceReportColumns>
        <Columns>
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          <Labels>
            <Label Id="1" Label=" CEI [Member]" />
            <Label Id="2" Label="6/30/2010" />
          </Labels>
          <CurrencyCode>USD</CurrencyCode>
          <FootnoteIndexer />
          <hasSegments>true</hasSegments>
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          <Segments>
            <Segment>
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              <Name />
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              <ValueName>CEI [Member]</ValueName>
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              <Namespace>xbrldi</Namespace>
              <Schema>http://xbrl.org/2006/xbrldi</Schema>
              <DimensionInfo>
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                <dimensionId>dei_LegalEntityAxis</dimensionId>
                <type>explicitMember</type>
              </DimensionInfo>
            </Segment>
          </Segments>
          <Scenarios />
          <Units>
            <Unit>
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                <MeasureNamespace>iso4217</MeasureNamespace>
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          </Units>
          <CurrencySymbol>$</CurrencySymbol>
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      </OriginalInstanceReportColumns>
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      <ElementReferences>No authoritative reference available.</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
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    <Row>
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    <Row>
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      <OriginalInstanceReportColumns />
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name FASB Staff Position (FSP)
 -Number FAS140-4 and FIN46(R)-8
 -Paragraph C6
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</ElementReferences>
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          <NonNumericTextHeader />
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          <Scenarios />
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      <ElementReferences>No authoritative reference available.</ElementReferences>
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          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>2</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>3</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>4</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:monetaryItemType</ElementDataType>
      <SimpleDataType>monetary</SimpleDataType>
      <ElementDefenition>Variable Interest Entities Net Exposure.</ElementDefenition>
      <ElementReferences>No authoritative reference available.</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>53</Id>
      <Label>OE [Member]</Label>
      <Level>0</Level>
      <ElementName />
      <ElementPrefix>na</ElementPrefix>
      <IsBaseElement>true</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>na</PeriodType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>true</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>false</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole>http://firstenergycorp.com/role/disclosurevariableinterestentitiesdetails</PreferredLabelRole>
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>2</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>3</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>4</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns>
        <Columns>
          <LabelColumn>false</LabelColumn>
          <Id>8</Id>
          <Labels>
            <Label Id="1" Label=" OE [Member]" />
            <Label Id="2" Label="6/30/2010" />
          </Labels>
          <CurrencyCode>USD</CurrencyCode>
          <FootnoteIndexer />
          <hasSegments>true</hasSegments>
          <hasScenarios>false</hasScenarios>
          <Segments>
            <Segment>
              <IsDefaultForEntity>false</IsDefaultForEntity>
              <Name />
              <IsFromEntityGroup>false</IsFromEntityGroup>
              <ValueName>OE [Member]</ValueName>
              <ValueType>dei_LegalEntityAxis</ValueType>
              <Namespace>xbrldi</Namespace>
              <Schema>http://xbrl.org/2006/xbrldi</Schema>
              <DimensionInfo>
                <Id>fe_SubsidiaryOneMember</Id>
                <dimensionId>dei_LegalEntityAxis</dimensionId>
                <type>explicitMember</type>
              </DimensionInfo>
            </Segment>
          </Segments>
          <Scenarios />
          <Units>
            <Unit>
              <UnitID>USD</UnitID>
              <UnitType>Standard</UnitType>
              <StandardMeasure>
                <MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema>
                <MeasureValue>USD</MeasureValue>
                <MeasureNamespace>iso4217</MeasureNamespace>
              </StandardMeasure>
              <Scale>0</Scale>
            </Unit>
          </Units>
          <CurrencySymbol>$</CurrencySymbol>
        </Columns>
      </OriginalInstanceReportColumns>
      <ElementDataType />
      <SimpleDataType>na</SimpleDataType>
      <ElementDefenition>No definition available.</ElementDefenition>
      <ElementReferences>No authoritative reference available.</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>54</Id>
      <Label>Net exposure to loss based upon the casualty value provisions</Label>
      <Level>2</Level>
      <ElementName>fe_NetExposureToLossBasedUponCasualtyValueProvisionsAbstract</ElementName>
      <ElementPrefix>fe</ElementPrefix>
      <IsBaseElement>false</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>duration</PeriodType>
      <ShortDefinition>Net exposure to loss based upon the casualty value provisions.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>true</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole>verboselabel</PreferredLabelRole>
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>2</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
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          <NonNumericTextHeader />
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          <hasScenarios>false</hasScenarios>
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        </Cell>
        <Cell>
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          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>4</Id>
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          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:stringItemType</ElementDataType>
      <SimpleDataType>string</SimpleDataType>
      <ElementDefenition>Net exposure to loss based upon the casualty value provisions.</ElementDefenition>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>55</Id>
      <Label>Maximum Exposure</Label>
      <Level>2</Level>
      <ElementName>us-gaap_VariableInterestMaximumExposureToLoss</ElementName>
      <ElementPrefix>us-gaap</ElementPrefix>
      <IsBaseElement>true</IsBaseElement>
      <BalanceType>credit</BalanceType>
      <PeriodType>instant</PeriodType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>false</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole>verboselabel</PreferredLabelRole>
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>true</IsNumeric>
          <IsRatio>false</IsRatio>
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          <NumericAmount>693000000</NumericAmount>
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          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
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        <Cell>
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          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
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          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>3</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
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          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>4</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:monetaryItemType</ElementDataType>
      <SimpleDataType>monetary</SimpleDataType>
      <ElementDefenition>Quantifies the entity's maximum exposure to loss.</ElementDefenition>
      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name FASB Staff Position (FSP)
 -Number FAS140-4 and FIN46(R)-8
 -Paragraph C6
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</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>56</Id>
      <Label>Discounted Lease Payments, net</Label>
      <Level>2</Level>
      <ElementName>fe_VariableInterestEntitiesDiscountedLeasePaymentsNet</ElementName>
      <ElementPrefix>fe</ElementPrefix>
      <IsBaseElement>false</IsBaseElement>
      <BalanceType>debit</BalanceType>
      <PeriodType>instant</PeriodType>
      <ShortDefinition>Discounted Lease Payments, net.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>false</IsAbstractGroupTitle>
      <IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow>
      <IsEquityAdjustmentRow>false</IsEquityAdjustmentRow>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole>verboselabel</PreferredLabelRole>
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>true</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>499000000</NumericAmount>
          <RoundedNumericAmount>499000000</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>2</Id>
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          <NonNumbericText />
          <NonNumericTextHeader />
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        <Cell>
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        <Cell>
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          <NonNumbericText />
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      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:monetaryItemType</ElementDataType>
      <SimpleDataType>monetary</SimpleDataType>
      <ElementDefenition>Discounted Lease Payments, net.</ElementDefenition>
      <ElementReferences>No authoritative reference available.</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>57</Id>
      <Label>Variable Interest Entities Net Exposure</Label>
      <Level>2</Level>
      <ElementName>fe_VariableInterestEntitiesNetExposure</ElementName>
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      <BalanceType>credit</BalanceType>
      <PeriodType>instant</PeriodType>
      <ShortDefinition>Variable Interest Entities Net Exposure.</ShortDefinition>
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      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
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      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsReverseSign>false</IsReverseSign>
      <PreferredLabelRole>verboselabel</PreferredLabelRole>
      <IsEPS>false</IsEPS>
      <FootnoteIndexer />
      <Cells>
        <Cell>
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          <IsNumeric>true</IsNumeric>
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          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>194000000</NumericAmount>
          <RoundedNumericAmount>194000000</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>2</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <IsRatio>false</IsRatio>
          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
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          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
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          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
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          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
        <Cell>
          <Id>4</Id>
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          <DisplayZeroAsNone>false</DisplayZeroAsNone>
          <NumericAmount>0</NumericAmount>
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          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
          <DisplayDateInUSFormat>false</DisplayDateInUSFormat>
        </Cell>
      </Cells>
      <OriginalInstanceReportColumns />
      <ElementDataType>xbrli:monetaryItemType</ElementDataType>
      <SimpleDataType>monetary</SimpleDataType>
      <ElementDefenition>Variable Interest Entities Net Exposure.</ElementDefenition>
      <ElementReferences>No authoritative reference available.</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
  </Rows>
  <Footnotes />
  <NumberOfCols>4</NumberOfCols>
  <NumberOfRows>28</NumberOfRows>
  <HasScenarios>false</HasScenarios>
  <MonetaryRoundingLevel>NoRounding</MonetaryRoundingLevel>
  <SharesRoundingLevel>UnKnown</SharesRoundingLevel>
  <PerShareRoundingLevel>UnKnown</PerShareRoundingLevel>
  <HasPureData>false</HasPureData>
  <SharesShouldBeRounded>true</SharesShouldBeRounded>
</InstanceReport>
