County annual report · FIPS 06099
2021 Stanislaus County, CA Power Outage Report
In 2021, customers in Stanislaus County, CA went without power for an average of 0.6 hours, a total of 125K customer-hours (California average 6.6 hours). That ranks 57th worst of 57 California counties and 2795th 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 Stanislaus 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 | January 27, 2021 05:00 | January 29, 2021 08:15 | 2d 3h | 6,108 | 35K |
| 2 | May 6, 2021 09:15 | May 6, 2021 23:30 | 14h 15m | 3,339 | 3,636 |
| 3 | October 11, 2021 16:00 | October 13, 2021 03:15 | 1d 11h | 2,677 | 15K |
| 4 | January 14, 2021 00:00 | January 14, 2021 12:00 | 12h | 2,301 | 5,874 |
| 5 | November 19, 2021 05:15 | November 19, 2021 05:45 | 30m | 2,193 | 549 |
| 6 | December 13, 2021 16:15 | December 14, 2021 05:15 | 13h | 2,076 | 2,623 |
| 7 | September 13, 2021 19:30 | September 13, 2021 23:45 | 4h 15m | 1,998 | 1,475 |
| 8 | April 27, 2021 01:15 | April 27, 2021 06:00 | 4h 45m | 1,719 | 1,297 |
| 9 | March 27, 2021 17:30 | March 27, 2021 23:00 | 5h 30m | 1,507 | 1,842 |
| 10 | November 21, 2021 03:30 | November 21, 2021 16:30 | 13h | 1,495 | 3,132 |
Outage episodes by size in 2021: 55 reached 100+ customers, 11 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 Stanislaus 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 |
| Turlock Irrigation District | 2021 | 1.8 hrs | 1.12 | 75 min | 0.88 |
| Modesto Irrigation District | 2021 | 87 min | 0.70 | 37 min | 0.46 |
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 ÷ 219,156 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. Stanislaus County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Stanislaus 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/stanislaus-county