County annual report · FIPS 06037
2021 Los Angeles County, CA Power Outage Report
In 2021, customers in Los Angeles County, CA went without power for an average of 3.8 hours, a total of 14.5M customer-hours (California average 6.6 hours). That ranks 47th worst of 57 California counties and 1579th of 2,974 nationally.
Compared with CA, the US and 2020
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Los Angeles County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 1, 2021 00:00 | April 4, 2021 10:30 | 93d 10h | 114,577 | 3.9M |
| 2 | April 18, 2021 02:15 | August 22, 2021 10:45 | 126d 8h | 64,486 | 4.8M |
| 3 | August 24, 2021 12:30 | October 21, 2021 02:00 | 57d 13h | 35,242 | 2.7M |
| 4 | November 8, 2021 17:00 | December 31, 2021 00:15 | 52d 7h | 22,166 | 1.9M |
| 5 | April 7, 2021 13:30 | April 14, 2021 08:15 | 6d 18h | 17,488 | 316K |
| 6 | October 21, 2021 05:16 | November 8, 2021 08:15 | 18d 2h | 15,239 | 625K |
| 7 | April 14, 2021 09:00 | April 18, 2021 01:15 | 3d 16h | 11,263 | 65K |
| 8 | August 22, 2021 12:00 | August 24, 2021 11:45 | 1d 23h | 6,491 | 99K |
| 9 | April 5, 2021 12:45 | April 7, 2021 12:45 | 2d | 2,475 | 24K |
| 10 | April 4, 2021 12:45 | April 5, 2021 05:15 | 16h 30m | 1,263 | 6,431 |
Outage episodes by size in 2021: 11 reached 100+ customers, 11 reached 1,000+ customers, 7 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 Los Angeles County reported on EIA Form 861 for 2021, 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 | 2021 | 3.0 hrs | 1.11 | 1.7 hrs | 0.96 |
| Los Angeles Department of Water & Power | 2021 | 2.3 hrs | 0.76 | 2.3 hrs | 0.76 |
| City of Pasadena - (CA) | 2021 | 29 min | 0.27 | 29 min | 0.27 |
| City of Vernon | 2013 | 42 min | 0.77 | 37 min | 0.46 |
| City of Azusa | - | - | - | - | - |
| City of Burbank Water and Power | - | - | - | - | - |
| City of Glendale - (CA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of California's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,762,600 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. Los Angeles County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Los Angeles County, CA annual power outage report, 2021, 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/2021/california/los-angeles-county