County annual report · FIPS 06077
2022 San Joaquin County, CA Power Outage Report
In 2022, customers in San Joaquin County, CA went without power for an average of 3.0 hours, a total of 957K customer-hours (California average 4.9 hours). That ranks 48th worst of 57 California counties and 1969th of 2,976 nationally.
Compared with CA, the US and 2021
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in San Joaquin County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 2, 2022 14:45 | May 7, 2022 12:15 | 4d 21h | 20,640 | 30K |
| 2 | February 20, 2022 11:45 | February 21, 2022 23:45 | 1d 12h | 18,389 | 92K |
| 3 | August 26, 2022 11:30 | August 31, 2022 09:00 | 4d 21h | 17,717 | 57K |
| 4 | May 23, 2022 12:00 | May 29, 2022 04:45 | 5d 16h | 17,457 | 80K |
| 5 | February 6, 2022 06:00 | February 6, 2022 12:15 | 6h 15m | 9,692 | 32K |
| 6 | August 16, 2022 15:45 | August 21, 2022 04:45 | 4d 13h | 6,540 | 55K |
| 7 | August 6, 2022 13:30 | August 8, 2022 00:30 | 1d 11h | 6,392 | 26K |
| 8 | March 27, 2022 07:30 | March 28, 2022 12:30 | 1d 5h | 5,672 | 24K |
| 9 | December 13, 2022 13:30 | December 15, 2022 01:45 | 1d 12h | 5,378 | 11K |
| 10 | December 29, 2022 16:45 | January 1, 2023 00:00 | 2d 7h | 4,897 | 32K |
Outage episodes by size in 2022: 173 reached 100+ customers, 60 reached 1,000+ customers, 4 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 Joaquin County reported on EIA Form 861 for 2022, 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. | 2022 | 5.4 hrs | 1.78 | 4.3 hrs | 1.63 |
| Modesto Irrigation District | 2022 | 49 min | 0.51 | 49 min | 0.51 |
| City of Lodi - (CA) | 2022 | 20 min | 0.15 | 9 min | 0.15 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Lathrop Irrigation District | - | - | - | - | - |
| Port of Stockton - (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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 324,543 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 Joaquin County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), San Joaquin County, CA annual power outage report, 2022, 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/2022/california/san-joaquin-county