County annual report · FIPS 06089
2021 Shasta County, CA Power Outage Report
In 2021, customers in Shasta County, CA went without power for an average of 20.0 hours, a total of 1.6M customer-hours (California average 6.6 hours). That ranks 16th worst of 57 California counties and 432nd 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 Shasta 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 17, 2021 13:00 | August 20, 2021 06:30 | 2d 17h | 20,766 | 596K |
| 2 | November 14, 2021 16:00 | November 16, 2021 12:00 | 1d 20h | 7,449 | 34K |
| 3 | January 26, 2021 15:30 | February 3, 2021 14:45 | 7d 23h | 6,951 | 269K |
| 4 | November 16, 2021 15:30 | November 18, 2021 09:15 | 1d 17h | 5,908 | 21K |
| 5 | June 14, 2021 05:00 | June 14, 2021 10:30 | 5h 30m | 3,788 | 2,894 |
| 6 | September 23, 2021 13:45 | October 18, 2021 17:30 | 25d 3h | 3,490 | 270K |
| 7 | September 10, 2021 12:45 | September 11, 2021 04:45 | 16h | 2,935 | 17K |
| 8 | December 12, 2021 11:15 | December 20, 2021 05:00 | 7d 17h | 2,749 | 114K |
| 9 | November 19, 2021 07:00 | November 20, 2021 00:45 | 17h 45m | 2,668 | 39K |
| 10 | November 13, 2021 07:45 | November 13, 2021 09:00 | 1h 15m | 2,554 | 3,193 |
Outage episodes by size in 2021: 91 reached 100+ customers, 27 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 Shasta 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2021 | 4.3 hrs | 1.86 | 2.0 hrs | 1.19 |
| Pacific Gas & Electric Co. | 2021 | 10.4 hrs | 1.84 | 3.6 hrs | 1.32 |
| City of Redding - (CA) | 2021 | 32 min | 0.47 | 32 min | 0.47 |
| City of Shasta Lake - (CA) | 2018 | 23.7 hrs | 1.24 | 23 min | 0.24 |
| 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 ÷ 81,282 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. Shasta County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Shasta 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/shasta-county