XML 116 R51.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]  
Income Tax Provision

On a consolidated and separate company basis, MGE Energy’s and MGE’s income tax provision consists of the following provision (benefit) components for the years ended December 31:

MGE EnergyMGE
(In thousands)201420132012201420132012
Current payable:
Federal$(891)$(1,508)$(6,053)$637 $(448)$(5,030)
State(589)8,213 436 (451)8,322 613
Net-deferred:
Federal39,284 37,203 37,178 38,553 36,937 36,589
State10,600 1,163 7,618 10,625 1,223 7,523
Amortized investment tax credits(219)(212)(260)(219)(212)(260)
Total income tax provision$48,185 $44,859 $38,919 $49,145 $45,822 $39,435
Effective Tax Rate Reconciliation

MGE Energy’s and MGE’s consolidated income tax provision differs from the amount computed by applying the statutory federal income tax rate to income before income taxes, as follows:

MGE EnergyMGE
201420132012201420132012
Statutory federal income tax rate35.0 %35.0 %35.0 %35.0 %35.0 %35.0 %
State income taxes, net of federal benefit5.1 %5.1 %5.0 %5.1 %5.1 %5.0 %
Amortized investment tax credits(0.2)%(0.2)%(0.3)%(0.2)%(0.2)%(0.2)%
Credit for electricity from wind energy(1.7)%(1.5)%(1.6)%(1.7)%(1.5)%(1.5)%
Domestic manufacturing deduction-%(0.2)%0.3 %-%(0.2)%0.3 %
AFUDC equity, net(0.8)%(0.7)%(0.4)%(0.8)%(0.7)%(0.4)%
Other, net, individually insignificant0.1 %-%(0.3)%0.1 %-%(0.5)%
Effective income tax rate37.5 %37.5 %37.7 %37.5 %37.5 %37.7 %
Deferred Tax Liabilities (Assets)

The significant components of deferred tax liabilities (assets) that appear on MGE Energys and MGE’s consolidated balance sheets as of December 31 as follows:

MGE EnergyMGE
(In thousands)2014201320142013
Property-related$312,903 $263,881 $312,807 $263,881
Investment in ATC36,140 32,696 29,156 27,073
Bond transactions1,420 1,553 1,420 1,553
Pension and other postretirement benefits57,847 34,478 57,847 34,478
Derivatives22,331 26,361 22,331 26,361
Tax deductible prepayments8,077 7,508 8,077 7,508
Other10,451 1,995 10,259 1,911
Gross deferred income tax liabilities449,169 368,472 441,897 362,765
Future tax benefit(4,092)-(4,092)-
Accrued expenses(32,091)(17,195)(32,091)(17,195)
Pension and other postretirement benefits(44,994)(26,838)(44,994)(26,838)
Deferred tax regulatory account(1,211)(1,402)(1,211)(1,402)
Derivatives(22,331)(26,361)(22,331)(26,361)
Other(5,957)(10,369)(3,746)(9,356)
Gross deferred income tax assets(110,676)(82,165)(108,465)(81,152)
Less valuation allowance70 195 70 195
Net deferred income tax assets(110,606)(81,970)(108,395)(80,957)
Deferred income taxes$338,563 $286,502 $333,502 $281,808
Unrecognized Tax Benefits and Interest

A tabular reconciliation of unrecognized tax benefits and interest from January 1, 2012 to December 31, 2014, is as follows:

(In thousands)
Unrecognized tax benefits:201420132012
Unrecognized tax benefits, January 1,$2,363 $3,204 $2,364
Additions based on tax positions related to the current year610 377 401
Additions based on tax positions related to the prior years618 424 580
Reductions based on tax positions related to the current year-(40)-
Reductions based on tax positions related to the prior years(1,226)(1,602)(141)
Unrecognized tax benefits, December 31,$2,365 $2,363 $3,204
(In thousands)
Interest on unrecognized tax benefits:201420132012
Accrued interest on unrecognized tax benefits, January 1,$101 $314 $216
Reduction in interest expense on uncertain tax positions(97)(275)-
Interest expense on uncertain tax positions88 62 98
Accrued interest on unrecognized tax benefits, December 31,$92 $101 $314
Tax Years that Remain Subject to Examination

The following table shows tax years that remain subject to examination by major jurisdiction:

TaxpayerOpen Years
MGE Energy and consolidated subsidiaries in federal return2011 through 2014
MGE Energy Wisconsin combined reporting corporation return2010 through 2014