Regulatory Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Regulatory Assets [Line Items]

Schedule of Regulatory Liabilities [Table Text Block]

Regulatory assets and liabilities consist of the following (dollars in millions):

	Remaining Amortization Period	As of December 31,
		2022						2021
		Earning a Return (1)		Not Earning a Return		Total		Total
Regulatory assets:
Price risk management	(2)	$	—	$	1	$	1	$	55
Pension and other postretirement plans	(3)	—		95		95		131
Debt issuance costs	2049	—		21		21		23
Trojan decommissioning activities	2059	—		133		133		90
February 2021 ice storm and damage	(4)	74		—		74		67
Power cost adjustment mechanism	(5)	28		—		28		29
2020 Labor Day wildfire	(4)	31		—		31		45
COVID-19	(6)	22		—		22		36
Wildfire mitigation	(6)	28		—		28		—
Other	Various	70		24		94		81
Total regulatory assets		$	253	$	274	$	527	$	557
Regulatory liabilities:
Asset retirement removal costs	(7)	$	1,136	$	—	$	1,136	$	1,047
Deferred income taxes	(8)	194		—		194		208
Asset retirement obligations	(7)	7		—		7		43
Price risk management	(2)	—		195		195		55
Other	Various	67		24		91		113
Total regulatory liabilities		$	1,404	$	219	$	1,623	$	1,466

(1)Earning a return includes either interest on the regulatory asset or liability, or inclusion of the regulatory asset or liability as an increase or decrease to rate base at the allowed rate of return.

(2)No amortization period in accordance with ratemaking and cost recovery processes authorized by the OPUC, PGE recognizes a regulatory asset or liability to defer unrealized losses or gains on derivative instruments until settlement.

(3)Recovery expected over the average service life of employees.

(4)Amortization will occur over a 7-year period starting January 1, 2023.

(5)Amortization will occur over a 2-year period starting January 1, 2023.

(6)Amortization period not yet determined.

(7)Recovery or refund expected over the estimated lives of the underlying assets and treated as a reduction to rate base.

(8)Refund expected as the balance is reversed using the average rate assumption method over the average life of the underlying assets and treated as a reduction to rate base.

Schedule of Regulatory Assets [Table Text Block]

Regulatory assets and liabilities consist of the following (dollars in millions):

	Remaining Amortization Period	As of December 31,
		2022						2021
		Earning a Return (1)		Not Earning a Return		Total		Total
Regulatory assets:
Price risk management	(2)	$	—	$	1	$	1	$	55
Pension and other postretirement plans	(3)	—		95		95		131
Debt issuance costs	2049	—		21		21		23
Trojan decommissioning activities	2059	—		133		133		90
February 2021 ice storm and damage	(4)	74		—		74		67
Power cost adjustment mechanism	(5)	28		—		28		29
2020 Labor Day wildfire	(4)	31		—		31		45
COVID-19	(6)	22		—		22		36
Wildfire mitigation	(6)	28		—		28		—
Other	Various	70		24		94		81
Total regulatory assets		$	253	$	274	$	527	$	557
Regulatory liabilities:
Asset retirement removal costs	(7)	$	1,136	$	—	$	1,136	$	1,047
Deferred income taxes	(8)	194		—		194		208
Asset retirement obligations	(7)	7		—		7		43
Price risk management	(2)	—		195		195		55
Other	Various	67		24		91		113
Total regulatory liabilities		$	1,404	$	219	$	1,623	$	1,466

(1)Earning a return includes either interest on the regulatory asset or liability, or inclusion of the regulatory asset or liability as an increase or decrease to rate base at the allowed rate of return.

(2)No amortization period in accordance with ratemaking and cost recovery processes authorized by the OPUC, PGE recognizes a regulatory asset or liability to defer unrealized losses or gains on derivative instruments until settlement.

(3)Recovery expected over the average service life of employees.

(4)Amortization will occur over a 7-year period starting January 1, 2023.

(5)Amortization will occur over a 2-year period starting January 1, 2023.

(6)Amortization period not yet determined.

(7)Recovery or refund expected over the estimated lives of the underlying assets and treated as a reduction to rate base.

(8)Refund expected as the balance is reversed using the average rate assumption method over the average life of the underlying assets and treated as a reduction to rate base.