County annual report · FIPS 06077
2019 San Joaquin County, CA Power Outage Report
In 2019, customers in San Joaquin County, CA went without power for an average of 2.9 hours, a total of 948K customer-hours (California average 9.6 hours). That ranks 48th worst of 57 California counties and 1683rd of 2,945 nationally.
Compared with CA, the US and 2018
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in San Joaquin County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 22, 2019 06:15 | April 28, 2019 07:45 | 6d 1h | 18,357 | 148K |
| 2 | January 6, 2019 14:00 | January 9, 2019 10:45 | 2d 20h | 13,959 | 147K |
| 3 | January 24, 2019 16:15 | January 26, 2019 11:15 | 1d 19h | 13,418 | 15K |
| 4 | October 27, 2019 09:00 | October 29, 2019 08:00 | 1d 23h | 8,013 | 86K |
| 5 | March 27, 2019 14:15 | March 31, 2019 09:00 | 3d 18h | 6,582 | 6,341 |
| 6 | May 28, 2019 15:30 | May 29, 2019 11:45 | 20h 15m | 5,815 | 5,605 |
| 7 | February 21, 2019 08:15 | February 26, 2019 07:00 | 4d 22h | 5,751 | 15K |
| 8 | August 6, 2019 14:15 | August 7, 2019 11:15 | 21h | 5,464 | 6,057 |
| 9 | November 26, 2019 13:30 | November 28, 2019 21:00 | 2d 7h | 5,231 | 21K |
| 10 | January 29, 2019 14:45 | February 1, 2019 19:00 | 3d 4h | 5,168 | 11K |
Outage episodes by size in 2019: 159 reached 100+ customers, 59 reached 1,000+ customers, 3 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 2019, 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. | 2018 | 5.0 hrs | 1.18 | 2.1 hrs | 1.08 |
| Modesto Irrigation District | 2018 | 28 min | 0.43 | - | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| City of Lodi - (CA) | - | - | - | - | - |
| 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 93% of California's customers in 2019; 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, 2019, 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/2019/california/san-joaquin-county