County annual report · FIPS 06043
2020 Mariposa County, CA Power Outage Report
In 2020, customers in Mariposa County, CA went without power for an average of 32.3 hours, a total of 234K customer-hours (California average 6.3 hours). That ranks 14th worst of 57 California counties and 255th 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 Mariposa 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 | October 4, 2020 11:30 | October 4, 2020 21:30 | 10h | 10,268 | 91K |
| 2 | January 28, 2020 12:30 | January 28, 2020 19:00 | 6h 30m | 4,392 | 14K |
| 3 | March 17, 2020 00:30 | March 19, 2020 04:15 | 2d 3h | 3,375 | 29K |
| 4 | September 30, 2020 05:45 | September 30, 2020 10:45 | 5h | 3,322 | 4,314 |
| 5 | May 18, 2020 23:00 | May 19, 2020 09:30 | 10h 30m | 3,139 | 3,482 |
| 6 | July 31, 2020 09:15 | July 31, 2020 12:15 | 3h | 2,110 | 6,330 |
| 7 | July 12, 2020 23:30 | July 13, 2020 11:00 | 11h 30m | 1,763 | 4,784 |
| 8 | June 1, 2020 15:30 | June 1, 2020 22:45 | 7h 15m | 1,594 | 807 |
| 9 | May 18, 2020 03:30 | May 18, 2020 05:45 | 2h 15m | 1,364 | 511 |
| 10 | August 21, 2020 07:45 | August 24, 2020 22:15 | 3d 14h | 1,292 | 18K |
Outage episodes by size in 2020: 37 reached 100+ customers, 10 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 Mariposa 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 ÷ 7,262 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. Mariposa County has data for 2018–2025.
Cite this report
MassOutage (massoutage.com), Mariposa 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/mariposa-county