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v3.20.4

Income Taxes - Income Tax Provision (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Current |  |  |
State | $ 22 | $ 2 | $ 6
Foreign | 4 | 4 | 0
Total — current | 26 | 6 | 6
Deferred |  |  |
U.S. Federal | 168 | (3,000) | (16)
State | 60 | (340) | 16
Foreign | (3) | 0 | 1
Total — deferred | 225 | (3,340) | 1
Total income tax expense/(benefit) | 251 | (3,334) | 7
Domestic and foreign components of income from continuing operations before income tax expense |  |  |
U.S. | 749 | 771 | 468
Foreign | 12 | 15 | (1)
Income from Continuing Operations Before Income Taxes | 761 | 786 | 467
Reconciliation of the U.S. federal statutory rate to NRG's effective rate from continuing operations |  |  |
Income from continuing operations before income taxes | 761 | 786 | 467
Tax at federal statutory tax rate | 160 | 165 | 98
State taxes | 18 | 13 | 18
Permanent differences | 8 | (9) | 7
Changes in valuation allowance | 24 | (3,492) | (106)
Deferred impact of state tax rate changes | 2 | 12 | 0
Production tax credits ("PTC") | 0 | 0 | (7)
Recognition of uncertain tax benefits | 3 | (10) | 1
Return to provision adjustments | 36 | 0 | 0
Alternative minimum tax ("AMT") refundable credit | 0 | 0 | (4)
Other | 0 | (13) | 0
Total income tax expense/(benefit) | $ 251 | $ (3,334) | $ 7
Effective income tax rate (as a percent) | 33.00% | (424.20%) | 1.50%

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