County annual report · FIPS 06051
2023 Mono County, CA Power Outage Report
In 2023, customers in Mono County, CA went without power for an average of 132.9 hours, a total of 738K customer-hours (California average 7.9 hours). That ranks 2nd worst of 57 California counties and 15th of 2,977 nationally.
Compared with CA, the US and 2022
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Mono County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 3, 2023 04:45 | May 8, 2023 22:15 | 35d 17h | 6,103 | 89K |
| 2 | February 28, 2023 13:15 | March 2, 2023 03:45 | 1d 14h | 2,399 | 38K |
| 3 | March 2, 2023 04:30 | March 7, 2023 06:00 | 5d 1h | 1,632 | 92K |
| 4 | January 1, 2023 00:00 | January 3, 2023 23:30 | 2d 23h | 1,576 | 31K |
| 5 | November 2, 2023 06:15 | November 2, 2023 11:45 | 5h 30m | 1,439 | 1,638 |
| 6 | July 26, 2023 07:45 | August 8, 2023 18:45 | 13d 11h | 1,399 | 242K |
| 7 | June 11, 2023 23:30 | June 13, 2023 03:30 | 1d 4h | 1,319 | 6,413 |
| 8 | March 10, 2023 18:00 | March 24, 2023 00:00 | 13d 6h | 1,072 | 108K |
| 9 | November 19, 2023 16:45 | November 21, 2023 15:30 | 1d 22h | 978 | 12K |
| 10 | November 4, 2023 07:45 | November 4, 2023 08:15 | 30m | 947 | 341 |
Outage episodes by size in 2023: 56 reached 100+ customers, 8 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 Mono County reported on EIA Form 861 for 2023, 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 | 2023 | 1.9 hrs | 1.04 | 1.6 hrs | 0.94 |
| Liberty Utilities | 2023 | 4.4 hrs | 1.97 | 4.4 hrs | 1.97 |
| Valley Electric Assn, Inc | 2023 | 2.4 hrs | 1.51 | 41 min | 0.73 |
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 2023; 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, 2023, 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/2023/california/mono-county