County annual report · FIPS 06113
2021 Yolo County, CA Power Outage Report
In 2021, customers in Yolo County, CA went without power for an average of 14.7 hours, a total of 1.5M customer-hours (California average 6.6 hours). That ranks 22nd worst of 57 California counties and 576th 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 Yolo 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 | January 27, 2021 02:15 | February 3, 2021 06:30 | 7d 4h | 30,190 | 1.2M |
| 2 | July 26, 2021 22:30 | July 29, 2021 02:15 | 2d 3h | 8,356 | 9,022 |
| 3 | October 24, 2021 08:00 | October 26, 2021 07:00 | 1d 23h | 3,761 | 16K |
| 4 | August 31, 2021 15:45 | September 2, 2021 01:30 | 1d 9h | 3,543 | 2,946 |
| 5 | November 9, 2021 00:00 | November 9, 2021 22:45 | 22h 45m | 3,206 | 5,343 |
| 6 | May 8, 2021 08:45 | May 9, 2021 19:45 | 1d 11h | 3,160 | 13K |
| 7 | January 16, 2021 17:15 | January 17, 2021 08:15 | 15h | 2,924 | 8,949 |
| 8 | May 24, 2021 15:15 | May 26, 2021 14:30 | 1d 23h | 2,914 | 3,728 |
| 9 | June 17, 2021 15:00 | June 18, 2021 09:45 | 18h 45m | 2,571 | 6,110 |
| 10 | July 8, 2021 21:15 | July 9, 2021 20:00 | 22h 45m | 2,429 | 3,235 |
Outage episodes by size in 2021: 111 reached 100+ customers, 23 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 Yolo 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 |
|---|---|---|---|---|---|
| Pacific Gas & Electric Co. | 2021 | 10.4 hrs | 1.84 | 3.6 hrs | 1.32 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Sacramento Municipal Util Dist | - | - | - | - | - |
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 ÷ 101,509 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. Yolo County has data for 2015–2016, 2018–2025.
Cite this report
MassOutage (massoutage.com), Yolo 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/yolo-county