State Regulators & Reliability Reports
California
State: California (CA)
Customers Served (2022)
15,857,833
Electric Sales, Megawatthours (2022)
251,869,136
SAIDI Minutes (2022)
199
SAIFI Frequency (2022)
1.25
State Regulator:
California Public Utilities Commission (CPUC)
Current Reporting Requirement(s):
All investor-owned utilities in California (6) are required to prepare annual system reliability reports, which assess SAIDI, SAIFI, CAIDI, and MAIFI performance on both system-wide and division levels. Index data must also be presented separately for the distribution and transmission levels, with Major Event Day (MED) outages both included and excluded. Several line charts showing historical trends in index performance are also required. Each utility must also identify its top 1% “Worst Performing Circuits,” along with an explanation of how that determination is made. The CPUC has imposed particular additional requirements on individual utilities. A template is provided by CPUC for report production.
Regulatory Authority: CPUC Decision D.16-01-008 (2016).
This order superseded reliability reporting requirements set by D.96-09-045 (1996).
Reporting Timeframe: Annual
Year Implemented: 1996 (amended in 2016)
Required Reliability Indices:
SAIDI, SAIFI, CAIDI, MAIFI
Use of Alternative Indices permitted?
MAIFIE may be reported in addition to MAIFI data
Naming convention for Reliability Reports:
Report
Example Report
California – SDG&E, CY2022
How to access utility reliability reports
All reports, by calendar year, are easily accessible here.