County annual report · FIPS 06035
2021 Lassen County, CA Power Outage Report
In 2021, customers in Lassen County, CA went without power for an average of 0.9 hours, a total of 14K customer-hours (California average 6.6 hours). That ranks 56th worst of 57 California counties and 2686th 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 Lassen 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 | December 14, 2021 18:30 | December 17, 2021 09:00 | 2d 14h | 232 | 8,988 |
| 2 | December 17, 2021 16:30 | December 18, 2021 02:45 | 10h 15m | 159 | 1,630 |
| 3 | November 22, 2021 02:15 | November 22, 2021 08:15 | 6h | 109 | 611 |
| 4 | August 18, 2021 01:15 | August 19, 2021 23:30 | 1d 22h | 74 | 1,433 |
| 5 | January 26, 2021 17:00 | January 26, 2021 21:15 | 4h 15m | 73 | 310 |
| 6 | December 14, 2021 05:00 | December 14, 2021 06:15 | 1h 15m | 72 | 55 |
| 7 | December 25, 2021 18:45 | December 25, 2021 22:45 | 4h | 72 | 270 |
| 8 | June 24, 2021 12:30 | June 24, 2021 13:00 | 30m | 63 | 31 |
| 9 | December 14, 2021 07:30 | December 14, 2021 13:15 | 5h 45m | 57 | 328 |
| 10 | September 23, 2021 06:30 | September 23, 2021 12:30 | 6h | 14 | 60 |
Outage episodes by size in 2021: 3 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 Lassen 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 |
| Lassen Municipal Utility District | 2018 | 6.6 hrs | 1.53 | 6.6 hrs | 1.53 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Plumas-Sierra Rural Elec Coop | - | - | - | - | - |
| Surprise Valley Electrification | - | - | - | - | - |
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 ÷ 15,440 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. Lassen County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Lassen 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/lassen-county