County annual report · FIPS 06097
2025 Sonoma County, CA Power Outage Report
In 2025, customers in Sonoma County, CA went without power for an average of 8.3 hours, a total of 1.8M customer-hours (California average 7.6 hours). That ranks 26th worst of 57 California counties and 983rd of 3,000 nationally.
Compared with CA, the US and 2024
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Sonoma County, 2025
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 21, 2025 23:15 | January 1, 2026 00:00 | 10d | 21,741 | 835K |
| 2 | July 17, 2025 18:30 | July 19, 2025 20:45 | 2d 2h | 19,392 | 56K |
| 3 | November 14, 2025 12:00 | November 16, 2025 20:45 | 2d 8h | 15,034 | 131K |
| 4 | November 4, 2025 15:30 | November 6, 2025 07:15 | 1d 15h | 6,307 | 5,375 |
| 5 | June 30, 2025 05:15 | July 5, 2025 07:00 | 5d 1h | 6,061 | 37K |
| 6 | January 5, 2025 16:00 | January 6, 2025 08:45 | 16h 45m | 5,730 | 19K |
| 7 | January 21, 2025 07:30 | January 23, 2025 10:00 | 2d 2h | 5,502 | 11K |
| 8 | October 23, 2025 15:15 | October 24, 2025 12:00 | 20h 45m | 5,415 | 19K |
| 9 | June 22, 2025 16:15 | June 22, 2025 22:15 | 6h | 5,248 | 8,254 |
| 10 | January 13, 2025 11:30 | January 14, 2025 06:15 | 18h 45m | 5,062 | 14K |
Outage episodes by size in 2025: 238 reached 100+ customers, 61 reached 1,000+ customers, 3 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 2025, 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. | 2024 | 8.5 hrs | 2.15 | 4.6 hrs | 1.82 |
| 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 n/a of California's customers in 2025; 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, 2025, 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/2025/california/sonoma-county