County annual report · FIPS 06055
2020 Napa County, CA Power Outage Report
In 2020, customers in Napa County, CA went without power for an average of 56.6 hours, a total of 3.6M customer-hours (California average 6.3 hours). That ranks 7th worst of 57 California counties and 141st of 3,019 nationally.
Compared with CA, the US and 2019
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Napa County, 2020
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 14, 2020 06:00 | September 17, 2020 23:15 | 34d 17h | 24,372 | 982K |
| 2 | October 9, 2020 07:45 | October 30, 2020 01:30 | 20d 17h | 13,181 | 1.1M |
| 3 | September 27, 2020 11:45 | October 9, 2020 07:00 | 11d 19h | 10,657 | 1.3M |
| 4 | June 3, 2020 21:45 | June 4, 2020 12:30 | 14h 45m | 6,225 | 11K |
| 5 | April 23, 2020 04:00 | April 23, 2020 13:30 | 9h 30m | 5,909 | 7,383 |
| 6 | February 9, 2020 06:30 | February 12, 2020 03:45 | 2d 21h | 4,730 | 37K |
| 7 | November 24, 2020 16:45 | November 24, 2020 20:30 | 3h 45m | 3,786 | 2,003 |
| 8 | November 24, 2020 21:30 | November 25, 2020 03:45 | 6h 15m | 3,765 | 949 |
| 9 | January 26, 2020 05:00 | January 26, 2020 15:15 | 10h 15m | 3,378 | 5,797 |
| 10 | December 5, 2020 10:30 | December 5, 2020 11:15 | 45m | 3,185 | 2,389 |
Outage episodes by size in 2020: 105 reached 100+ customers, 22 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 Napa County reported on EIA Form 861 for 2020, 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. | 2020 | 7.4 hrs | 1.34 | 2.3 hrs | 1.04 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 94% of California's customers in 2020; 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, 2020, 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/2020/california/napa-county