We had the following regulatory assets and liabilities (in thousands):


	As of			As of
	September 30, 2023			December 31, 2022
Regulatory assets
Winter Storm Uri	$	225,052		$	347,980
Deferred energy and fuel cost adjustments		59,129			72,580
Deferred gas cost adjustments		8,048			12,147
Gas price derivatives		3,849			8,793
Deferred taxes on AFUDC		7,180			7,333
Employee benefit plans and related deferred taxes		87,423			89,259
Environmental		2,868			1,343
Loss on reacquired debt		17,865			19,213
Deferred taxes on flow through accounting		69,259			69,529
Decommissioning costs		2,407			3,472
Other regulatory assets		21,779			21,332
Total regulatory assets		504,859			652,981
Less current regulatory assets		(191,746	)		(260,312	)
Regulatory assets, non-current	$	313,113		$	392,669

Regulatory liabilities
Deferred energy and gas costs	$	91,273		$	41,722
Employee benefit plan costs and related deferred taxes		33,006			34,258
Cost of removal		179,208			175,614
Excess deferred income taxes		250,390			254,833
Other regulatory liabilities		9,080			12,146
Total regulatory liabilities		562,957			518,573
Less current regulatory liabilities		(93,988	)		(46,013	)
Regulatory liabilities, non-current	$	468,969		$	472,560

Except as discussed below, there have been no other significant changes to our Regulatory Matters from those previously disclosed in Note 2 of the Notes to the Consolidated Financial Statements in our 2022 Annual Report on Form 10-K.

On July 12, 2023, the CPUC approved a settlement agreement for RMNG's rate review filed on October 7, 2022. The agreement is expected to generate $8.2 million in new annual revenue and establishes a weighted average cost of capital of 6.93% with a capital structure that reflects an equity range of 50% to 52%, a debt range of 50% to 48% and a return on equity range of 9.5% to 9.7%. The settlement also shifts $8.3 million of SSIR revenues to base rates and terminates the SSIR. New rates were effective July 15, 2023.

On May 9, 2023, Colorado Gas filed a rate review with the CPUC seeking recovery of significant infrastructure investments in its 10,000-mile natural gas pipeline system. The rate review requests $27 million in new annual revenue with a capital structure of 51% equity and 49% debt and a return on equity of 10.49%. The request seeks to finalize rates in the first quarter of 2024.

On May 18, 2023, Wyoming Gas filed a rate review with the WPSC seeking recovery of significant infrastructure investments in its 6,400-mile natural gas pipeline system. On October 13, 2023, Wyoming Gas filed a settlement agreement with the WPSC for a general rate increase. The agreement is expected to generate $13.9 million in new annual revenue with a capital structure of 51% equity, 49% debt and a return on equity of 9.85%. Subject to WPSC approval, the agreement includes new rates effective January 1, 2024 and a four-year extension of the Wyoming Integrity Rider.

On June 1, 2022, Wyoming Electric filed a rate review with the WPSC seeking recovery of significant infrastructure investments in its 1,330-mile electric distribution and 59-mile electric transmission systems. On January 26, 2023, the WPSC approved a settlement agreement with intervening parties for a general rate increase. The settlement is expected to generate $8.7 million in new annual revenue with a capital structure of 52% equity, 48% debt and a return on equity of 9.75%. New rates were effective March 1, 2023. The agreement also includes approval of a new rider that will be filed annually to recover transmission investments and expenses.