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Income Taxes
3 Months Ended
Mar. 31, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
NEE's effective income tax rate for the three months ended March 31, 2021 and 2020 was approximately 14.3% and (321.9)%, respectively. NEE's effective income tax rate is based on the composition of pre-tax income and, for the three months ended March 31, 2020, primarily reflects the impact of unfavorable changes in the fair value of interest rate derivative instruments and equity securities held in NEER's nuclear decommissioning funds, and the gain on the sale of the Spain solar projects that was not taxable for federal and state income tax purposes (see Note 11 - Disposal of a Business). State income taxes for the three months ended March 31, 2021 reflect state tax benefits associated with financial impacts from the severe prolonged winter weather in Texas in February 2021.

A reconciliation between the effective income tax rates and the applicable statutory rate is as follows:
 NEEFPL
 Three Months Ended March 31,Three Months Ended March 31,
 2021202020212020
Statutory federal income tax rate21.0 %21.0 %21.0 %21.0 %
Increases (reductions) resulting from:
State income taxes - net of federal income tax benefit0.8 (61.0)4.4 4.3 
Taxes attributable to noncontrolling interests
2.0 32.7  — 
PTCs and ITCs - NEER
(5.0)(86.5) — 
Amortization of deferred regulatory credit(1.9)(55.5)(3.4)(4.8)
Foreign operations0.2 (76.9) — 
Other - net
(2.8)(95.7)(0.8)(2.7)
Effective income tax rate14.3 %(321.9)%21.2 %17.8 %

NEE recognizes PTCs as wind energy is generated and sold based on a per kWh rate prescribed in applicable federal and state statutes, which may differ significantly from amounts computed, on a quarterly basis, using an overall effective income tax rate anticipated for the full year. NEE uses this method of recognizing PTCs for specific reasons, including that PTCs are an integral part of the expected value of most wind projects and a fundamental component of such wind projects' results of operations. PTCs, as well as ITCs, can significantly affect NEE's effective income tax rate depending on the amount of pretax income. The amount of PTCs recognized can be significantly affected by wind generation and by the roll off of PTCs after ten years of production.