County annual report · FIPS 06077
2025 San Joaquin County, CA Power Outage Report
In 2025, customers in San Joaquin County, CA went without power for an average of 3.7 hours, a total of 1.2M customer-hours (California average 7.6 hours). That ranks 45th worst of 57 California counties and 1836th of 3,000 nationally.
Compared with CA, the US and 2024
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in San Joaquin County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 19, 2025 13:30 | June 22, 2025 08:30 | 2d 19h | 61,218 | 565K |
| 2 | March 23, 2025 17:45 | March 24, 2025 13:30 | 19h 45m | 9,528 | 11K |
| 3 | April 21, 2025 14:45 | April 23, 2025 08:00 | 1d 17h | 9,310 | 8,619 |
| 4 | January 28, 2025 06:15 | January 29, 2025 07:00 | 1d | 5,738 | 19K |
| 5 | May 19, 2025 00:15 | May 20, 2025 10:15 | 1d 10h | 5,493 | 12K |
| 6 | December 3, 2025 16:45 | December 5, 2025 13:30 | 1d 20h | 5,278 | 7,821 |
| 7 | December 24, 2025 08:45 | December 27, 2025 07:00 | 2d 22h | 5,214 | 24K |
| 8 | May 3, 2025 13:45 | May 4, 2025 09:30 | 19h 45m | 5,021 | 6,956 |
| 9 | May 30, 2025 15:15 | May 31, 2025 22:00 | 1d 6h | 4,999 | 19K |
| 10 | November 7, 2025 14:45 | November 8, 2025 02:00 | 11h 15m | 4,764 | 3,903 |
Outage episodes by size in 2025: 172 reached 100+ customers, 61 reached 1,000+ customers, 1 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 2025, 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. | 2024 | 8.5 hrs | 2.15 | 4.6 hrs | 1.82 |
| Modesto Irrigation District | 2024 | 58 min | 0.61 | 43 min | 0.47 |
| City of Lodi - (CA) | 2024 | 17 min | 0.27 | 17 min | 0.27 |
| 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 n/a of California's customers in 2025; 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, 2025, 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/2025/california/san-joaquin-county