County annual report · FIPS 06097
2022 Sonoma County, CA Power Outage Report
In 2022, customers in Sonoma County, CA went without power for an average of 5.7 hours, a total of 1.2M customer-hours (California average 4.9 hours). That ranks 33rd worst of 57 California counties and 1264th of 2,976 nationally.
Compared with CA, the US and 2021
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Sonoma County, 2022
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 8, 2022 08:30 | January 9, 2022 23:45 | 1d 15h | 13,478 | 121K |
| 2 | January 21, 2022 15:30 | January 23, 2022 05:45 | 1d 14h | 10,608 | 73K |
| 3 | September 12, 2022 02:15 | September 13, 2022 05:45 | 1d 3h | 7,636 | 45K |
| 4 | March 29, 2022 15:15 | March 31, 2022 09:45 | 1d 18h | 7,098 | 20K |
| 5 | August 30, 2022 12:45 | September 2, 2022 01:45 | 2d 13h | 6,063 | 25K |
| 6 | December 27, 2022 04:15 | January 1, 2023 00:00 | 4d 19h | 5,354 | 21K |
| 7 | January 31, 2022 15:15 | February 1, 2022 13:30 | 22h 15m | 5,115 | 11K |
| 8 | May 23, 2022 12:45 | May 27, 2022 01:45 | 3d 13h | 5,023 | 29K |
| 9 | November 2, 2022 15:15 | November 3, 2022 02:45 | 11h 30m | 4,461 | 9,497 |
| 10 | September 3, 2022 14:30 | September 4, 2022 08:30 | 18h | 4,182 | 3,412 |
Outage episodes by size in 2022: 251 reached 100+ customers, 74 reached 1,000+ customers, 2 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 Sonoma County reported on EIA Form 861 for 2022, 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. | 2022 | 5.4 hrs | 1.78 | 4.3 hrs | 1.63 |
| City of Healdsburg - (CA) | - | - | - | - | - |
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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 214,127 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. Sonoma County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Sonoma County, CA annual power outage report, 2022, 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/2022/california/sonoma-county