County annual report · FIPS 06073
2021 San Diego County, CA Power Outage Report
In 2021, customers in San Diego County, CA went without power for an average of 2.9 hours, a total of 3.9M customer-hours (California average 6.6 hours). That ranks 52nd worst of 57 California counties and 1897th of 2,974 nationally.
Compared with CA, the US and 2020
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in San Diego County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 12, 2021 04:45 | December 16, 2021 03:00 | 3d 22h | 23,208 | 167K |
| 2 | October 4, 2021 15:15 | October 11, 2021 03:30 | 6d 12h | 21,141 | 141K |
| 3 | August 26, 2021 14:15 | September 1, 2021 03:30 | 5d 13h | 13,651 | 77K |
| 4 | July 25, 2021 03:45 | August 5, 2021 10:00 | 11d 6h | 11,226 | 115K |
| 5 | July 12, 2021 05:15 | July 16, 2021 12:45 | 4d 7h | 11,203 | 92K |
| 6 | August 11, 2021 06:45 | August 14, 2021 22:15 | 3d 15h | 10,675 | 102K |
| 7 | May 18, 2021 03:45 | May 19, 2021 13:30 | 1d 9h | 9,487 | 25K |
| 8 | October 23, 2021 02:15 | October 30, 2021 23:45 | 7d 21h | 8,468 | 74K |
| 9 | January 22, 2021 15:30 | January 29, 2021 12:15 | 6d 20h | 8,011 | 79K |
| 10 | November 30, 2021 05:15 | December 1, 2021 08:30 | 1d 3h | 7,730 | 13K |
Outage episodes by size in 2021: 208 reached 100+ customers, 141 reached 1,000+ customers, 6 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving San Diego County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Pacific Gas & Electric Co. | 2021 | 10.4 hrs | 1.84 | 3.6 hrs | 1.32 |
| Southern California Edison Co | 2021 | 3.0 hrs | 1.11 | 1.7 hrs | 0.96 |
| Imperial Irrigation District | 2021 | 1.9 hrs | 0.70 | 71 min | 0.66 |
| San Diego Gas & Electric Co | 2021 | 77 min | 0.67 | 72 min | 0.67 |
| City of Escondido - (CA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of California's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,362,929 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. San Diego County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), San Diego County, CA annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/california/san-diego-county