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REGULATORY MATTERS (Tables)
12 Months Ended
Dec. 31, 2022
Regulated Operations [Abstract]  
Schedule of Regulatory Assets
We show the details of regulatory assets and liabilities in the following table and discuss them below. With the exception of regulatory balancing accounts, we generally do not earn a return on our regulatory assets until such time as a related cash expenditure has been made. Upon the occurrence of a cash expenditure associated with a regulatory asset, the related amounts are recoverable through a regulatory account mechanism for which we earn a return authorized by applicable regulators, which generally approximates the three-month commercial paper rate. The periods during which we recognize a regulatory asset while we do not earn a return vary by regulatory asset.
REGULATORY ASSETS (LIABILITIES)
(Dollars in millions)
December 31,
 20222021
SDG&E:  
Fixed-price contracts and other derivatives$(110)$(50)
Deferred income taxes recoverable in rates296 125 
Pension and PBOP plan obligations11 (7)
Removal obligations(2,248)(2,251)
Environmental costs107 62 
Sunrise Powerlink fire mitigation123 122 
Regulatory balancing accounts(1)(2)
Commodity – electric220 77 
Gas transportation60 49 
Safety and reliability107 67 
Public purpose programs(69)(107)
Wildfire mitigation plan375 178 
Liability insurance premium99 110 
Other balancing accounts(50)207 
Other regulatory assets, net(2)
137 119 
Total SDG&E(942)(1,299)
SoCalGas:  
Deferred income taxes recoverable in rates161 44 
Pension and PBOP plan obligations(170)51 
Employee benefit costs24 31 
Removal obligations(616)(627)
Environmental costs38 34 
Regulatory balancing accounts(1)(2)
Commodity – gas, including transportation(257)(146)
Safety and reliability575 339 
Public purpose programs(158)(183)
Liability insurance premium23 16 
Other balancing accounts115 42 
Other regulatory assets, net(2)
223 142 
Total SoCalGas(42)(257)
Sempra Infrastructure:
Deferred income taxes recoverable in rates78 77 
Total Sempra$(906)$(1,479)
(1)    At December 31, 2022 and 2021, the noncurrent portion of regulatory balancing accounts – net undercollected for SDG&E was $562 and $358, respectively, and for SoCalGas was $692 and $410, respectively.
(2)    Includes regulatory assets earning a return authorized by applicable regulators, which generally approximates the three-month commercial paper rate.
Schedule of Regulatory Liabilities
We show the details of regulatory assets and liabilities in the following table and discuss them below. With the exception of regulatory balancing accounts, we generally do not earn a return on our regulatory assets until such time as a related cash expenditure has been made. Upon the occurrence of a cash expenditure associated with a regulatory asset, the related amounts are recoverable through a regulatory account mechanism for which we earn a return authorized by applicable regulators, which generally approximates the three-month commercial paper rate. The periods during which we recognize a regulatory asset while we do not earn a return vary by regulatory asset.
REGULATORY ASSETS (LIABILITIES)
(Dollars in millions)
December 31,
 20222021
SDG&E:  
Fixed-price contracts and other derivatives$(110)$(50)
Deferred income taxes recoverable in rates296 125 
Pension and PBOP plan obligations11 (7)
Removal obligations(2,248)(2,251)
Environmental costs107 62 
Sunrise Powerlink fire mitigation123 122 
Regulatory balancing accounts(1)(2)
Commodity – electric220 77 
Gas transportation60 49 
Safety and reliability107 67 
Public purpose programs(69)(107)
Wildfire mitigation plan375 178 
Liability insurance premium99 110 
Other balancing accounts(50)207 
Other regulatory assets, net(2)
137 119 
Total SDG&E(942)(1,299)
SoCalGas:  
Deferred income taxes recoverable in rates161 44 
Pension and PBOP plan obligations(170)51 
Employee benefit costs24 31 
Removal obligations(616)(627)
Environmental costs38 34 
Regulatory balancing accounts(1)(2)
Commodity – gas, including transportation(257)(146)
Safety and reliability575 339 
Public purpose programs(158)(183)
Liability insurance premium23 16 
Other balancing accounts115 42 
Other regulatory assets, net(2)
223 142 
Total SoCalGas(42)(257)
Sempra Infrastructure:
Deferred income taxes recoverable in rates78 77 
Total Sempra$(906)$(1,479)
(1)    At December 31, 2022 and 2021, the noncurrent portion of regulatory balancing accounts – net undercollected for SDG&E was $562 and $358, respectively, and for SoCalGas was $692 and $410, respectively.
(2)    Includes regulatory assets earning a return authorized by applicable regulators, which generally approximates the three-month commercial paper rate.
Proposed Revenue Requirement
The following table summarizes the location of balances related to the Wildfire Fund on Sempra’s and SDG&E’s Consolidated Balance Sheets and Consolidated Statements of Operations.
WILDFIRE FUND
(Dollars in millions)
December 31,
Location20222021
Wildfire Fund asset:
Current
Prepaid Expenses
$29 $29 
Noncurrent
Wildfire Fund
303 331 
Wildfire Fund obligation:
Current
Other Current Liabilities
$13 $13 
NoncurrentDeferred Credits and Other53 64 
Years ended December 31,
202220212020
Amortization of Wildfire Fund assetOperation and Maintenance$29 $29 $29 
Impairment of Wildfire Fund assetOperation and Maintenance— — 
Accretion of Wildfire Fund obligationOperation and Maintenance
.
A CPUC cost of capital proceeding determines a utility’s authorized capital structure and authorized return on rate base. The CCM applies in the interim years between required cost of capital applications and considers changes in the cost of capital based on changes in interest rates based on the applicable utility bond index published by Moody’s (the CCM benchmark rate) for each 12-month period ending September 30 (the measurement period). The index applicable to SDG&E and SoCalGas is based on each utility’s credit rating. The CCM benchmark rate is the basis of comparison to determine if the CCM is triggered in each measurement period, which occurs if the change in the applicable Moody’s utility bond index relative to the CCM benchmark rate is larger than plus or minus 1.000% at the end of the measurement period. The CCM, if triggered, would automatically update the authorized cost of debt based on actual costs and update the authorized ROE upward or downward by one-half of the difference between the CCM benchmark rate and the applicable Moody’s utility bond index. Alternatively, each of SDG&E and SoCalGas are permitted to file a cost of capital application in an interim year in which an extraordinary or catastrophic event materially impacts its cost of capital and affects utilities differently than the market as a whole to have its cost of capital determined in lieu of the CCM.
In December 2019, the CPUC approved the following cost of capital for SDG&E and SoCalGas that became effective on January 1, 2020 and remained in effect through December 31, 2022, subject to the CCM.
CPUC AUTHORIZED COST OF CAPITAL FOR 2020 – 2022
SDG&ESoCalGas
Authorized weightingReturn on
rate base
Weighted
return on
rate base
Authorized weightingReturn on
rate base
Weighted
return on
rate base
45.25 %4.59 %2.08 %Long-Term Debt45.60 %4.23 %1.93 %
2.75 6.22 0.17 Preferred Equity2.40 6.00 0.14 
52.00 10.20 5.30 Common Equity52.00 10.05 5.23 
100.00 %7.55 %100.00 %7.30 %
CPUC AUTHORIZED COST OF CAPITAL FOR 2023 – 2025
SDG&ESoCalGas
Authorized weightingReturn on
rate base
Weighted
return on
rate base(1)
Authorized weightingReturn on
rate base
Weighted
return on
rate base
45.25 %4.05 %1.83 %Long-Term Debt45.60 %4.07 %1.86 %
2.75 6.22 0.17 Preferred Equity2.40 6.00 0.14 
52.00 9.95 5.17 Common Equity52.00 9.80 5.10 
100.00 %7.18 %100.00 %7.10 %
(1)    Total weighted return on rate base does not sum due to rounding differences.