County annual report · FIPS 06003
2020 Alpine County, CA Power Outage Report
In 2020, customers in Alpine County, CA went without power for an average of 77.3 hours, a total of 68K customer-hours (California average 6.3 hours). That ranks 5th worst of 57 California counties and 95th 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 Alpine 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 | September 8, 2020 18:30 | September 10, 2020 00:45 | 1d 6h | 654 | 19K |
| 2 | September 28, 2020 02:15 | September 28, 2020 21:30 | 19h 15m | 654 | 11K |
| 3 | October 26, 2020 00:45 | October 28, 2020 00:15 | 1d 23h | 654 | 29K |
| 4 | November 25, 2020 09:45 | November 25, 2020 10:45 | 1h | 474 | 474 |
| 5 | July 31, 2020 20:15 | July 31, 2020 22:15 | 2h | 215 | 324 |
| 6 | March 15, 2020 17:15 | March 15, 2020 19:00 | 1h 45m | 122 | 34 |
| 7 | April 3, 2020 18:00 | April 10, 2020 23:00 | 7d 5h | 119 | 7,445 |
| 8 | October 25, 2020 23:15 | October 25, 2020 23:45 | 30m | 111 | 56 |
| 9 | July 1, 2020 01:30 | July 1, 2020 02:00 | 30m | 108 | 54 |
| 10 | March 15, 2020 08:30 | March 15, 2020 10:30 | 2h | 82 | 43 |
Outage episodes by size in 2020: 9 reached 100+ customers, 0 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 Alpine 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 |
| Liberty Utilities | 2020 | 4.0 hrs | 1.87 | 4.0 hrs | 1.87 |
| Kirkwood Meadows PUD | - | - | - | - | - |
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 ÷ 882 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. Alpine County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Alpine 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/alpine-county