County annual report · FIPS 06055
2022 Napa County, CA Power Outage Report
In 2022, customers in Napa County, CA went without power for an average of 8.6 hours, a total of 549K customer-hours (California average 4.9 hours). That ranks 22nd worst of 57 California counties and 841st 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 Napa 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 | November 7, 2022 07:15 | November 8, 2022 03:15 | 20h | 6,282 | 7,686 |
| 2 | September 5, 2022 19:30 | September 6, 2022 06:45 | 11h 15m | 5,551 | 14K |
| 3 | September 29, 2022 06:30 | September 29, 2022 09:15 | 2h 45m | 4,826 | 3,607 |
| 4 | May 10, 2022 15:30 | May 13, 2022 06:15 | 2d 14h | 3,862 | 13K |
| 5 | January 21, 2022 15:00 | January 23, 2022 05:45 | 1d 14h | 3,861 | 13K |
| 6 | March 28, 2022 00:45 | March 28, 2022 11:30 | 10h 45m | 3,393 | 7,704 |
| 7 | August 8, 2022 03:00 | August 9, 2022 04:30 | 1d 1h | 3,221 | 13K |
| 8 | September 29, 2022 15:15 | October 1, 2022 18:15 | 2d 3h | 2,981 | 17K |
| 9 | August 3, 2022 11:00 | August 5, 2022 05:45 | 1d 18h | 2,931 | 8,383 |
| 10 | September 23, 2022 11:00 | September 24, 2022 22:15 | 1d 11h | 2,917 | 27K |
Outage episodes by size in 2022: 180 reached 100+ customers, 39 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 Napa 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 |
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 ÷ 63,828 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. Napa County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Napa 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/napa-county