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Regulatory Matters

3 Months Ended

Mar. 31, 2021

Regulatory Assets and Liabilities Disclosure [Abstract]

Regulatory Matters

Regulatory Matters

Regulatory Assets and Liabilities

The following presents our current and long-term regulatory assets and liabilities as of March 31, 2021 and December 31, 2020 and the period we expect to recover or refund such amounts:

			Period of						March 31, 2021												December 31, 2020
(in thousands)			Recovery/Refund						Current						Long-Term						Current						Long Term
Regulatory Assets
Pension and Other Postretirement Benefit Plans1			Various						$	11,037					$	143,996					$	11,037					$	146,071
Alternative Revenue Program Riders2			Up to 3 years						6,891						10,418						8,871						9,373
Asset Retirement Obligations1			Asset lives						—						8,539						—						8,462
ISO Cost Recovery Trackers1			Up to 2 years						809						703						1,079						867
Unrecovered Project Costs1			Up to 3 years						1,556						2,937						361						2,989
Deferred Rate Case Expenses1			Various						493						165						360						230
Debt Reacquisition Premiums1			Up to 12 years						180						302						192						341
Other1			Various						453						496						—						62
Total Regulatory Assets									$	21,419					$	167,556					$	21,900					$	168,395
Regulatory Liabilities
Deferred Income Taxes			Asset lives						$	—					$	133,306					$	—					$	134,719
Plant Removal Obligations			Asset lives						—						100,616						—						98,707
Fuel Clause Adjustments			Up to 1 year						7,072						—						10,947						—
Alternative Revenue Program Riders			Various						3,306						837						3,581						470
Pension and Other Postretirement Benefit Plans			Up to 1 year						1,959						—						1,959						—
Other			Various						180						227						176						77
Total Regulatory Liabilities									$	12,517					$	234,986					$	16,663					$	233,973
1Costs subject to recovery without a rate of return.
2Amount eligible for recovery includes an incentive or rate of return.

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- Definition

The entire disclosure for detailed information about regulatory assets and liabilities, including current and noncurrent assets created when regulatory agencies permit the deferral of costs to the balance sheet that would otherwise be required to appear on the company's income statement and would be charged against current expenses or revenues, as well as current and noncurrent liabilities created when regulatory agencies permit.

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