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Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2024

We had the following regulatory assets and liabilities as of December 31:


	2024			2023
	(in millions)
Regulatory assets
Winter Storm Uri (a)	$	109.5		$	199.6
Deferred energy and fuel cost adjustments (b)		62.8			55.1
Deferred gas cost adjustments (b)		14.5			4.1
Gas price derivatives (b)		2.9			5.1
Deferred taxes on AFUDC (b)		8.0			7.1
Employee benefit plans and related deferred taxes (c)		89.0			89.3
Environmental (b)		10.7			2.9
Loss on reacquired debt (b)		15.7			17.4
Deferred taxes on flow-through accounting (b)		87.7			74.7
Decommissioning costs (b)		2.4			2.4
Other regulatory assets (b)		24.5			22.4
Total regulatory assets		427.7			480.1
Less current regulatory assets		(154.8	)		(175.7	)
Regulatory assets, non-current	$	272.9		$	304.4

Regulatory liabilities
Deferred energy and gas costs (b)	$	91.9		$	88.9
Employee benefit plans and related deferred taxes (c)		36.7			36.2
Cost of removal (b)		197.0			181.9
Excess deferred income taxes (c)		238.5			247.1
Other regulatory liabilities (c)		4.6			12.5
Total regulatory liabilities		568.7			566.6
Less current regulatory liabilities		(94.1	)		(98.9	)
Regulatory liabilities, non-current	$	474.6		$	467.7

(a)

Timing of Winter Storm Uri incremental cost recovery and associated carrying costs vary by jurisdiction. See further information below.

(b)

Recovery/repayment of costs, but we are not allowed a rate of return.

(c)

In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base.