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Regulatory Assets and Liabilities (Tables)
 12 Months Ended
Dec. 31, 2019
Regulatory Assets and Liabilities Disclosure [Abstract]  
Regulatory Assets and Liabilities The following regulatory assets and liabilities are reflected in MGE's consolidated balance sheets as of December 31:

 

(In thousands)

 

 

2019

 

 

2018

 

 

Regulatory Assets

 

 

 

 

 

 

 

 

Asset retirement obligation

 

$

10,756

 

$

9,199

 

 

Debt related costs

 

 

8,885

 

 

9,288

 

 

Deferred pension and other postretirement costs

 

 

6,216

 

 

-

 

 

Derivatives

 

 

26,875

 

 

31,830

 

 

Leases

 

 

2,400

 

 

59

 

 

Tax recovery related to AFUDC equity

 

 

7,060

 

 

6,482

 

 

Unfunded pension and other postretirement liability

 

 

83,214

 

 

96,030

 

 

Other

 

 

340

 

 

2,013

 

 

Total Regulatory Assets

 

$

145,746

 

$

154,901

 

 

 

 

 

 

 

 

 

 

 

Regulatory Liabilities

 

 

 

 

 

 

 

 

Deferred fuel savings

 

$

1,794

 

$

9,504

 

 

Elm Road

 

 

2,322

 

 

2,515

 

 

Income taxes

 

 

129,528

 

 

135,449

 

 

Non-ARO removal costs

 

 

26,543

 

 

19,891

 

 

Pension and other postretirement service costs

 

 

4,499

 

 

3,669

 

 

Purchased gas adjustment

 

 

1,864

 

 

1,186

 

 

Renewable energy credits

 

 

558

 

 

700

 

 

Transmission

 

 

6,019

 

 

5,476

 

 

Other

 

 

1,066

 

 

1,074

 

 

Total Regulatory Liabilities

 

$

174,193

 

$

179,464