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Income Taxes
 3 Months Ended
Mar. 31, 2022
Schedule of Effective Income Tax Rate Reconciliation [Line Items]  
Income Taxes Income Taxes
The effective income tax rate for the three-month period ended March 31, 2022, is 108% and results from a $507 million income tax benefit associated with a $470 million pre-tax loss, primarily relating to a pre-tax unrealized loss of $1,247 million on the Company's investment in BYD Company Limited. The $507 million income tax benefit is primarily comprised of a $99 million benefit (21%) from the application of the statutory income tax rate to the pre-tax loss and a $339 million benefit (72%) from income tax credits.

The effective income tax rate for the three-month period ended March 31, 2021, is 217% and results from a $535 million income tax benefit associated with a $246 million pre-tax loss, primarily relating to a pre-tax unrealized loss of $1,124 million on the Company's investment in BYD Company Limited. The $535 million income tax benefit is primarily comprised of a $52 million benefit (21%) from the application of the statutory income tax rate to the pre-tax loss, a $334 million benefit (136%) from income tax credits and a $51 million benefit (21%) from state income tax benefits, net of federal income tax impacts.

A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax benefit is as follows:
Three-Month Periods
Ended March 31,
 20222021
 
Federal statutory income tax rate21 %21 %
Income tax credits72 136 
State income tax, net of federal income tax impacts(3)21 
Income tax effect of foreign income3 6 
Effects of ratemaking8 10 
Equity income3 15 
Noncontrolling interest5 9 
Other, net(1)(1)
Effective income tax rate108 %217 %

Income tax credits relate primarily to PTCs from wind-powered generating facilities owned by MidAmerican Energy, PacifiCorp and BHE Renewables. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2022 and 2021 totaled $338 million and $315 million, respectively.

The Company's provision for income taxes has been computed on a stand-alone basis. Berkshire Hathaway includes the Company in its consolidated U.S. federal and Iowa state income tax returns and the majority of the Company's U.S. federal income tax is remitted to or received from Berkshire Hathaway. The Company made no payments for federal income taxes to Berkshire Hathaway for the three-month periods ended March 31, 2022 and 2021.
PAC  
Schedule of Effective Income Tax Rate Reconciliation [Line Items]  
Income Taxes Income Taxes
A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax (benefit) expense is as follows:
Three-Month Periods
Ended March 31,
20222021
Federal statutory income tax rate21 %21 %
State income tax, net of federal income tax benefit3 3 
Federal income tax credits(20)(20)
Effects of ratemaking(1)
(11)(13)
Valuation allowance6 — 
Other3 2 
Effective income tax rate2 %(7)%
(1)Effects of ratemaking is primarily attributable to activity associated with excess deferred income taxes.

Income tax credits relate primarily to production tax credits ("PTCs") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2022 and 2021 totaled $26 million and $31 million, respectively.

For the three-month period ended March 31, 2022 PacifiCorp recorded a valuation allowance related to state net operating loss carryforwards.
MEC  
Schedule of Effective Income Tax Rate Reconciliation [Line Items]  
Income Taxes Income Taxes
The effective income tax rate for the three-month period ended March 31, 2021, is 2,200% and results from a $154 million income tax benefit associated with a $7 million pretax loss. The $154 million income tax benefit is primarily comprised of a $2 million benefit (21%) from the application of the statutory income tax rate to the pretax loss and a $168 million benefit (2,400%) from income tax credits, partially offset by a $13 million expense (186%) from the effects of ratemaking.

A reconciliation of the federal statutory income tax rate to MidAmerican Energy's effective income tax rate applicable to income before income tax benefit is as follows:
Three-Month Periods
Ended March 31,
20222021
Federal statutory income tax rate21 %21 %
Income tax credits(534)2,400 
State income tax, net of federal income tax impacts(21)(29)
Effects of ratemaking(8)(186)
Other, net— (6)
Effective income tax rate(542)%2,200 %

Income tax credits relate primarily to production tax credits ("PTCs") from MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. MidAmerican Energy recognizes its renewable electricity PTCs throughout the year based on when the credits are earned and excludes them from the annual effective tax rate that is the basis for the interim recognition of other income tax expense. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2022 and 2021 totaled $203 million and $151 million, respectively.
Berkshire Hathaway includes BHE and subsidiaries in its U.S. federal and Iowa state income tax returns. Consistent with established regulatory practice, MidAmerican Energy's provision for income tax has been computed on a stand-alone basis, and substantially all of its currently payable or receivable income tax is remitted to or received from BHE. MidAmerican Energy made no cash payments for income tax to BHE for each of the three-month periods ended March 31, 2022 and 2021.
MidAmerican Funding, LLC  
Schedule of Effective Income Tax Rate Reconciliation [Line Items]  
Income Taxes Income Taxes
The effective income tax rate for the three-month period ended March 31, 2021, is 1,300% and results from a $156 million income tax benefit associated with a $12 million pretax loss. The $156 million income tax benefit is primarily comprised of a $3 million benefit (21%) from the application of the statutory income tax rate to the pretax loss and a $168 million benefit (1,400%) from income tax credits, partially offset by a $13 million expense (108%) from the effects of ratemaking.

A reconciliation of the federal statutory income tax rate to MidAmerican Funding's effective income tax rate applicable to income before income tax benefit is as follows:
Three-Month Periods
Ended March 31,
20222021
Federal statutory income tax rate21 %21 %
Income tax credits(618)1,400 
State income tax, net of federal income tax impacts(24)(8)
Effects of ratemaking(9)(108)
Other, net— (5)
Effective income tax rate(630)%1,300 %

Income tax credits relate primarily to production tax credits ("PTCs") from MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. MidAmerican Funding recognizes its renewable electricity PTCs throughout the year based on when the credits are earned and excludes them from the annual effective tax rate that is the basis for the interim recognition of other income tax expense. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2022 and 2021 totaled $203 million and $151 million, respectively.

Berkshire Hathaway includes BHE and subsidiaries in its U.S. federal and Iowa state income tax returns. Consistent with established regulatory practice, MidAmerican Funding's and MidAmerican Energy's provisions for income tax have been computed on a stand-alone basis, and substantially all of their currently payable or receivable income tax is remitted to or received from BHE. MidAmerican Funding made no cash payments for income tax to BHE for each of the three-month periods ended March 31, 2022 and 2021.
SPPC  
Schedule of Effective Income Tax Rate Reconciliation [Line Items]  
Income Taxes Income Taxes
A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows:
Three-Month Periods
Ended March 31,
20222021
Federal statutory income tax rate21 %21 %
Effects of ratemaking(7)(10)
Other1 2 
Effective income tax rate15 %13 %
Effects of ratemaking is primarily attributable to the recognition of excess deferred income taxes related to the 2017 Tax Cuts and Jobs Act pursuant to an order issued by the PUCN effective January 1, 2020.
EEGH  
Schedule of Effective Income Tax Rate Reconciliation [Line Items]  
Income Taxes Income Taxes
A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows:
Three-Month Periods
Ended March 31,
20222021
Federal statutory income tax rate21 %21 %
State income tax, net of federal income tax benefit5 3 
Equity interest2 2 
Effects of ratemaking(4)(1)
Noncontrolling interest(11)(11)
Other, net1 (1)
Effective income tax rate14 %13 %

For the period ended March 31, 2022, Eastern Energy Gas' reconciliation of the federal statutory income tax rate to the effective income tax rate is driven primarily by an absence of tax on income attributable to Cove Point's 75% noncontrolling interest.

Eastern Energy Gas, as a subsidiary of BHE, is included in Berkshire Hathaway's U.S. federal income tax return. Consistent with established regulatory practice, Eastern Energy Gas' provisions for income tax have been computed on a stand-alone basis, and substantially all of its currently payable or receivable income tax is remitted to or received from BHE. Eastern Energy Gas made no cash payments for income tax to BHE for the three-month periods ended March 31, 2022 and 2021.