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Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2024
Schedule of Effective Income Tax Rate Reconciliation
Three Months Ended June 30, 2024
AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
U.S. Federal Statutory Rate21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %
Increase (decrease) due to:
State and Local Income Taxes, Net0.9 %0.5 %2.3 %3.0 %(3.7)%(1.2)%(2.9)%(0.1)%
Tax Reform Excess ADIT Reversal
(6.0)%(1.2)%0.2 %(2.9)%(15.2)%(34.9)%(3.4)%2.0 %
Remeasurement of Excess ADIT(1.7)%3.9 %— %— %(46.2)%— %— %— %
Production and Investment Tax Credits
(11.0)%(0.2)%— %(0.1)%1.8 %— %(70.6)%15.9 %
Reversal of Origination Flow-Through1.1 %0.1 %0.3 %(1.0)%12.0 %2.7 %0.3 %(0.4)%
Other
(2.4)%(1.3)%(2.4)%(2.1)%(2.0)%(4.1)%(1.5)%0.5 %
Effective Income Tax Rate1.9 %22.8 %21.4 %17.9 %(32.3)%(16.5)%(57.1)%38.9 %

Three Months Ended June 30, 2023
AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
U.S. Federal Statutory Rate21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %
Increase (decrease) due to:
State and Local Income Taxes, Net2.1 %0.6 %2.6 %3.2 %0.7 %0.8 %2.0 %(1.6)%
Tax Reform Excess ADIT Reversal(6.2)%(1.3)%0.1 %(4.5)%(6.1)%(8.5)%(17.2)%(4.2)%
Production and Investment Tax Credits
(9.9)%(0.2)%— %(0.1)%0.1 %— %(55.1)%(29.2)%
Reversal of Origination Flow-Through(1.0)%0.1 %0.2 %(5.1)%(4.4)%1.2 %0.3 %(0.8)%
Other
(0.8)%(0.6)%(2.1)%(1.9)%— %(0.6)%(1.4)%0.7 %
Effective Income Tax Rate5.2 %19.6 %21.8 %12.6 %11.3 %13.9 %(50.4)%(14.1)%

Six Months Ended June 30, 2024
AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
U.S. Federal Statutory Rate21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %
Increase (decrease) due to:
State and Local Income Taxes, Net1.8 %0.4 %2.5 %2.6 %2.3 %0.6 %— %(2.4)%
Tax Reform Excess ADIT Reversal
(6.0)%(1.2)%0.2 %(10.0)%(3.4)%(10.6)%(2.8)%(1.5)%
Remeasurement of Excess ADIT(19.0)%2.4 %— %— %(55.8)%— %(116.8)%303.0 %
Production and Investment Tax Credits
(7.0)%(0.2)%— %(0.1)%(0.5)%— %(61.3)%69.3 %
Other
(2.0)%(1.1)%(1.8)%(1.4)%(0.7)%(0.4)%(0.4)%(1.2)%
Effective Income Tax Rate(11.2)%21.3 %21.9 %12.1 %(37.1)%10.6 %(160.3)%388.2 %
Six Months Ended June 30, 2023
AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
U.S. Federal Statutory Rate21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %
Increase (decrease) due to:
State and Local Income Taxes, Net2.0 %0.5 %2.6 %2.6 %2.4 %0.9 %2.0 %(1.2)%
Tax Reform Excess ADIT Reversal
(6.2)%(1.4)%0.2 %(4.5)%(7.2)%(7.6)%(17.1)%(4.0)%
Production and Investment Tax Credits
(9.8)%(0.2)%— %(0.1)%(0.6)%— %(55.2)%(28.2)%
Other
(2.9)%(0.7)%(1.6)%0.6 %(2.1)%0.1 %(1.0)%(0.5)%
Effective Income Tax Rate4.1 %19.2 %22.2 %19.6 %13.5 %14.4 %(50.3)%(12.9)%