County annual report · FIPS 06103
2021 Tehama County, CA Power Outage Report
In 2021, customers in Tehama County, CA went without power for an average of 31.8 hours, a total of 894K customer-hours (California average 6.6 hours). That ranks 13th worst of 57 California counties and 285th 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 Tehama 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 | August 15, 2021 22:30 | August 22, 2021 04:30 | 6d 6h | 11,358 | 375K |
| 2 | October 11, 2021 08:30 | October 13, 2021 01:00 | 1d 16h | 5,150 | 150K |
| 3 | January 4, 2021 21:30 | January 5, 2021 11:45 | 14h 15m | 4,965 | 12K |
| 4 | April 23, 2021 17:30 | April 25, 2021 04:00 | 1d 10h | 3,088 | 15K |
| 5 | December 13, 2021 04:00 | December 13, 2021 09:15 | 5h 15m | 3,021 | 3,029 |
| 6 | September 25, 2021 17:00 | September 25, 2021 20:00 | 3h | 2,997 | 6,247 |
| 7 | September 21, 2021 17:15 | September 24, 2021 20:15 | 3d 3h | 2,723 | 8,742 |
| 8 | June 12, 2021 04:15 | June 12, 2021 05:30 | 1h 15m | 2,220 | 1,111 |
| 9 | January 7, 2021 14:30 | January 8, 2021 05:15 | 14h 45m | 2,116 | 3,724 |
| 10 | October 22, 2021 01:30 | October 22, 2021 19:00 | 17h 30m | 2,054 | 8,135 |
Outage episodes by size in 2021: 85 reached 100+ customers, 21 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 Tehama 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 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
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 ÷ 28,134 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. Tehama County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Tehama 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/tehama-county