County annual report · FIPS 06011
2021 Colusa County, CA Power Outage Report
In 2021, customers in Colusa County, CA went without power for an average of 17.2 hours, a total of 172K customer-hours (California average 6.6 hours). That ranks 18th worst of 57 California counties and 493rd 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 Colusa 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 03:45 | January 31, 2021 09:15 | 4d 5h | 3,767 | 79K |
| 2 | September 4, 2021 23:00 | September 5, 2021 08:15 | 9h 15m | 2,244 | 3,415 |
| 3 | December 13, 2021 03:30 | December 14, 2021 00:00 | 20h 30m | 1,915 | 6,086 |
| 4 | February 24, 2021 18:00 | February 25, 2021 09:30 | 15h 30m | 1,911 | 1,248 |
| 5 | June 18, 2021 15:45 | June 19, 2021 06:00 | 14h 15m | 1,725 | 2,030 |
| 6 | March 27, 2021 16:45 | March 27, 2021 20:45 | 4h | 1,299 | 1,874 |
| 7 | August 28, 2021 05:15 | August 28, 2021 07:00 | 1h 45m | 1,298 | 488 |
| 8 | July 18, 2021 20:30 | July 18, 2021 22:15 | 1h 45m | 1,297 | 1,622 |
| 9 | October 17, 2021 21:30 | October 18, 2021 06:45 | 9h 15m | 1,179 | 6,855 |
| 10 | September 11, 2021 20:30 | September 12, 2021 14:15 | 17h 45m | 1,131 | 1,613 |
Outage episodes by size in 2021: 32 reached 100+ customers, 10 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 Colusa 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 ÷ 9,970 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. Colusa County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Colusa 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/colusa-county