County annual report · FIPS 06051
2020 Mono County, CA Power Outage Report
In 2020, customers in Mono County, CA went without power for an average of 33.6 hours, a total of 186K customer-hours (California average 6.3 hours). That ranks 13th worst of 57 California counties and 239th 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 Mono 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 | June 11, 2020 15:15 | June 12, 2020 01:00 | 9h 45m | 18,601 | 5,934 |
| 2 | May 18, 2020 12:45 | May 18, 2020 14:00 | 1h 15m | 11,328 | 5,256 |
| 3 | November 17, 2020 16:00 | November 23, 2020 07:15 | 5d 15h | 2,313 | 74K |
| 4 | December 9, 2020 17:15 | December 9, 2020 20:15 | 3h | 2,130 | 610 |
| 5 | August 16, 2020 08:30 | August 16, 2020 10:30 | 2h | 1,955 | 2,709 |
| 6 | June 19, 2020 15:15 | June 26, 2020 11:45 | 6d 20h | 1,934 | 13K |
| 7 | June 10, 2020 15:30 | June 11, 2020 00:45 | 9h 15m | 1,867 | 802 |
| 8 | February 2, 2020 23:00 | February 3, 2020 02:45 | 3h 45m | 1,785 | 4,017 |
| 9 | December 10, 2020 21:15 | December 11, 2020 01:00 | 3h 45m | 1,773 | 1,764 |
| 10 | July 27, 2020 16:00 | July 28, 2020 03:45 | 11h 45m | 1,764 | 797 |
Outage episodes by size in 2020: 69 reached 100+ customers, 17 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 Mono 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 |
|---|---|---|---|---|---|
| Southern California Edison Co | 2020 | 3.4 hrs | 1.06 | 1.5 hrs | 0.87 |
| Liberty Utilities | 2020 | 4.0 hrs | 1.87 | 4.0 hrs | 1.87 |
| Valley Electric Assn, Inc | 2020 | 68 min | 0.89 | 32 min | 0.57 |
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 ÷ 5,551 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. Mono County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mono 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/mono-county