County annual report · FIPS 06077
2017 San Joaquin County, CA Power Outage Report
In 2017, customers in San Joaquin County, CA went without power for an average of 0.0 hours, a total of 178 customer-hours (California average 2.2 hours). That ranks 28th worst of 47 California counties and 2747th of 2,786 nationally.
Compared with CA, the US and 2016
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in San Joaquin County, 2017
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 6, 2017 16:15 | December 7, 2017 00:30 | 8h 15m | 62 | 89 |
| 2 | November 21, 2017 00:00 | November 21, 2017 00:15 | 15m | 45 | 11 |
| 3 | November 22, 2017 14:15 | November 22, 2017 15:30 | 1h 15m | 35 | 44 |
| 4 | November 27, 2017 17:15 | November 28, 2017 01:00 | 7h 45m | 3 | 16 |
| 5 | December 5, 2017 01:15 | December 5, 2017 02:30 | 1h 15m | 3 | 2 |
| 6 | December 2, 2017 00:30 | December 2, 2017 04:30 | 4h | 1 | 4 |
| 7 | December 2, 2017 17:00 | December 2, 2017 18:15 | 1h 15m | 1 | 1 |
| 8 | December 3, 2017 17:45 | December 3, 2017 18:30 | 45m | 1 | 1 |
| 9 | December 4, 2017 00:15 | December 4, 2017 01:45 | 1h 30m | 1 | 2 |
| 10 | December 7, 2017 19:45 | December 7, 2017 22:45 | 3h | 1 | 3 |
Outage episodes by size in 2017: 0 reached 100+ customers, 0 reached 1,000+ customers, 0 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 2017, 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. | 2017 | 6.2 hrs | 1.55 | 1.9 hrs | 0.96 |
| Modesto Irrigation District | 2017 | 48 min | 0.69 | - | - |
| 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 n/a of California's customers in 2017; 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, 2017, 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/2017/california/san-joaquin-county