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Regulatory Matters

3 Months Ended

Mar. 31, 2024

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, 2024 and December 31, 2023 and the period we expect to recover or refund such amounts:

			Period of						March 31, 2024												December 31, 2023
(in thousands)			Recovery/Refund						Current						Long-Term						Current						Long-Term
Regulatory Assets
Pension and Other Postretirement Benefit Plans1			Various						$	154					$	87,630					$	154					$	86,134
Alternative Revenue Program Riders2			Up to 2 years						3,501						203						3,719						158
Asset Retirement Obligations1			Asset lives						—						107						—						87
Deferred Income Taxes			Asset lives						—						7,154						—						6,940
Fuel Clause Adjustments1			Up to 1 year						4,075						—						7,294						—
Derivative Instruments1			Up to 1 year						248						—						4,210						—
Other1			Various						1,197						1,588						750						2,396
Total Regulatory Assets									$	9,175					$	96,682					$	16,127					$	95,715
Regulatory Liabilities
Deferred Income Taxes			Asset lives						$	—					$	134,779					$	—					$	136,022
Plant Removal Obligations			Asset lives						—						117,220						—						117,030
Fuel Clause Adjustments			Up to 1 year						16,011						—						11,350						—
Alternative Revenue Program Riders			Up to 1 year						10,291						—						6,885						—
North Dakota PTC Refunds			Asset lives						—						13,175						—						12,011
Pension and Other Postretirement Benefit Plans			Various						6,138						11,608						6,138						11,307
Other			Various						1,073						274						1,035						177
Total Regulatory Liabilities									$	33,513					$	277,056					$	25,408					$	276,547
1Costs subject to recovery without a rate of return.
2Amounts 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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