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REGULATORY MATTERS (Tables)
12 Months Ended
Dec. 31, 2023
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) AT DECEMBER 31
(Dollars in millions)
SempraSDG&ESoCalGas
 202320222023202220232022
Fixed-price contracts and other derivatives$215 $(56)$14 $(110)$201 $54 
Deferred income taxes recoverable in rates1,142 535 626 296 430 161 
Pension and PBOP plan obligations(212)(159)48 11 (260)(170)
Employee benefit costs24 29 21 24 
Removal obligations(3,082)(2,864)(2,468)(2,248)(614)(616)
Environmental costs139 145 105 107 34 38 
Sunrise Powerlink fire mitigation124 123 124 123 — — 
Regulatory balancing accounts(1)(2):
Commodity – electric(233)220 (233)220 — — 
Commodity – gas, including transportation(259)(197)52 60 (311)(257)
Safety and reliability959 682 207 107 752 575 
Public purpose programs(273)(227)(144)(69)(129)(158)
Wildfire mitigation plan685 375 685 375 — — 
Liability insurance premium113 122 90 99 23 23 
Other balancing accounts373 65 (152)(50)525 115 
Other regulatory (liabilities) assets, net(2)
(10)301 49 132 (58)169 
Total$(295)$(906)$(994)$(942)$614 $(42)
(1)    At December 31, 2023 and 2022, the noncurrent portion of regulatory balancing accounts – net undercollected for Sempra was $1,913 and $1,254, respectively, for SDG&E was $950 and $562, respectively, and for SoCalGas was $963 and $692, 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) AT DECEMBER 31
(Dollars in millions)
SempraSDG&ESoCalGas
 202320222023202220232022
Fixed-price contracts and other derivatives$215 $(56)$14 $(110)$201 $54 
Deferred income taxes recoverable in rates1,142 535 626 296 430 161 
Pension and PBOP plan obligations(212)(159)48 11 (260)(170)
Employee benefit costs24 29 21 24 
Removal obligations(3,082)(2,864)(2,468)(2,248)(614)(616)
Environmental costs139 145 105 107 34 38 
Sunrise Powerlink fire mitigation124 123 124 123 — — 
Regulatory balancing accounts(1)(2):
Commodity – electric(233)220 (233)220 — — 
Commodity – gas, including transportation(259)(197)52 60 (311)(257)
Safety and reliability959 682 207 107 752 575 
Public purpose programs(273)(227)(144)(69)(129)(158)
Wildfire mitigation plan685 375 685 375 — — 
Liability insurance premium113 122 90 99 23 23 
Other balancing accounts373 65 (152)(50)525 115 
Other regulatory (liabilities) assets, net(2)
(10)301 49 132 (58)169 
Total$(295)$(906)$(994)$(942)$614 $(42)
(1)    At December 31, 2023 and 2022, the noncurrent portion of regulatory balancing accounts – net undercollected for Sempra was $1,913 and $1,254, respectively, for SDG&E was $950 and $562, respectively, and for SoCalGas was $963 and $692, respectively.
(2)    Includes regulatory assets earning a return authorized by applicable regulators, which generally approximates the three-month commercial paper rate.
Schedule of Regulated Operations
The following table summarizes the location of balances related to the Wildfire Fund on Sempra’s and SDG&E’s Consolidated Balance Sheets.
WILDFIRE FUND
(Dollars in millions)
December 31,
Location20232022
Wildfire Fund asset:
Current
Prepaid Expenses
$28 $29 
Noncurrent
Wildfire Fund
269 303 
Wildfire Fund obligation:
Current
Other Current Liabilities
13 13 
NoncurrentDeferred Credits and Other42 53 
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.
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 %
AUTHORIZED COST OF CAPITAL FOR 2023
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.

For the measurement period that ended on September 30, 2023, SDG&E’s CCM benchmark rate was 4.367% based on Moody’s Baa- utility bond index and SoCalGas’ CCM benchmark rate was 4.074% based on Moody’s A- utility bond index. The actual average rate during the measurement period was 5.777% for SDG&E and 5.472% for SoCalGas. As such, the CCM was triggered for SDG&E and SoCalGas on September 30, 2023. In December 2023, the CPUC approved increases to SDG&E’s and SoCalGas’ authorized rates of return effective January 1, 2024, which will remain in effect through December 31, 2025, subject to the CCM. In January 2024, several parties submitted a request for the CPUC to review such approval.
AUTHORIZED COST OF CAPITAL FOR 2024 – 2025
SDG&ESoCalGas
Authorized weightingReturn on
rate base
Weighted
return on
rate base
Authorized weightingReturn on
rate base
Weighted
return on
rate base
45.25 %4.34 %1.96 %Long-Term Debt45.60 %4.54 %2.07 %
2.75 6.22 0.17 Preferred Equity2.40 6.00 0.14 
52.00 10.65 5.54 Common Equity52.00 10.50 5.46 
100.00 %7.67 %100.00 %7.67 %