County annual report · FIPS 06065
2021 Riverside County, CA Power Outage Report
In 2021, customers in Riverside County, CA went without power for an average of 5.5 hours, a total of 4.7M customer-hours (California average 6.6 hours). That ranks 38th worst of 57 California counties and 1246th 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 Riverside 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 | September 30, 2021 15:30 | October 6, 2021 11:45 | 5d 20h | 35,291 | 63K |
| 2 | August 16, 2021 16:15 | August 19, 2021 11:45 | 2d 19h | 27,492 | 39K |
| 3 | July 4, 2021 09:30 | July 5, 2021 06:15 | 20h 45m | 24,209 | 48K |
| 4 | February 9, 2021 14:45 | February 13, 2021 05:30 | 3d 14h | 20,545 | 38K |
| 5 | June 11, 2021 04:45 | June 19, 2021 21:45 | 8d 17h | 19,566 | 189K |
| 6 | March 14, 2021 15:45 | March 25, 2021 00:45 | 10d 9h | 18,611 | 387K |
| 7 | January 19, 2021 13:30 | January 22, 2021 06:45 | 2d 17h | 14,445 | 168K |
| 8 | February 8, 2021 16:15 | February 9, 2021 03:30 | 11h 15m | 13,948 | 20K |
| 9 | November 24, 2021 17:00 | November 29, 2021 02:15 | 4d 9h | 13,673 | 180K |
| 10 | June 1, 2021 14:45 | June 10, 2021 00:45 | 8d 10h | 13,453 | 99K |
Outage episodes by size in 2021: 176 reached 100+ customers, 128 reached 1,000+ customers, 20 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 Riverside 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 |
| Arizona Public Service Co | 2021 | 1.8 hrs | 1.02 | 87 min | 0.89 |
| Imperial Irrigation District | 2021 | 1.9 hrs | 0.70 | 71 min | 0.66 |
| Anza Electric Coop Inc | 2018 | 108.7 hrs | 11.22 | 105.9 hrs | 10.94 |
| City of Riverside - (CA) | 2021 | 1.9 hrs | 0.80 | 83 min | 0.72 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| City of Banning - (CA) | - | - | - | - | - |
| City of Corona - (CA) | - | - | - | - | - |
| City of Moreno Valley - (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 ÷ 853,923 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. Riverside County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Riverside 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/riverside-county