County annual report · FIPS 06043
2018 Mariposa County, CA Power Outage Report
In 2018, customers in Mariposa County, CA went without power for an average of 30.9 hours, a total of 224K customer-hours (California average 3.7 hours). That ranks 2nd worst of 57 California counties and 182nd of 2,798 nationally.
Compared with CA, the US
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Mariposa County, 2018
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 23, 2018 02:00 | June 23, 2018 07:00 | 5h | 3,289 | 6,411 |
| 2 | August 3, 2018 13:45 | August 10, 2018 00:30 | 6d 10h | 3,119 | 53K |
| 3 | August 30, 2018 15:45 | August 30, 2018 17:15 | 1h 30m | 2,513 | 630 |
| 4 | July 24, 2018 08:15 | July 29, 2018 00:45 | 4d 16h | 2,303 | 69K |
| 5 | July 14, 2018 05:45 | July 15, 2018 18:15 | 1d 12h | 1,407 | 22K |
| 6 | July 16, 2018 00:15 | July 18, 2018 19:15 | 2d 19h | 776 | 21K |
| 7 | July 19, 2018 03:15 | July 24, 2018 06:45 | 5d 3h | 776 | 34K |
| 8 | December 2, 2018 18:15 | December 3, 2018 11:15 | 17h | 663 | 2,209 |
| 9 | November 29, 2018 10:45 | November 30, 2018 06:30 | 19h 45m | 611 | 1,212 |
| 10 | July 30, 2018 03:45 | July 31, 2018 02:30 | 22h 45m | 607 | 632 |
Outage episodes by size in 2018: 24 reached 100+ customers, 5 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 Mariposa County reported on EIA Form 861 for 2018, 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. | 2018 | 5.0 hrs | 1.18 | 2.1 hrs | 1.08 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of California's customers in 2018; 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, 2018, 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/2018/california/mariposa-county