County annual report · FIPS 06065
2018 Riverside County, CA Power Outage Report
In 2018, customers in Riverside County, CA went without power for an average of 3.3 hours, a total of 2.8M customer-hours (California average 3.7 hours). That ranks 22nd worst of 57 California counties and 1418th of 2,798 nationally.
Compared with CA, the US and 2017
Coverage line is EAGLE-I's share of California customers tracked each year.
Biggest outages in Riverside 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 | September 26, 2018 13:30 | September 28, 2018 14:00 | 2d | 38,539 | 33K |
| 2 | November 2, 2018 14:45 | November 3, 2018 13:00 | 22h 15m | 26,812 | 9,533 |
| 3 | August 17, 2018 15:00 | August 18, 2018 11:00 | 20h | 21,288 | 30K |
| 4 | December 6, 2018 21:45 | December 8, 2018 06:30 | 1d 8h | 19,760 | 15K |
| 5 | December 13, 2018 06:30 | December 14, 2018 03:30 | 21h | 18,972 | 25K |
| 6 | October 15, 2018 08:15 | October 17, 2018 07:00 | 1d 22h | 18,744 | 208K |
| 7 | December 9, 2018 02:00 | December 9, 2018 14:15 | 12h 15m | 18,068 | 5,073 |
| 8 | July 27, 2018 04:45 | July 28, 2018 05:00 | 1d | 17,844 | 51K |
| 9 | April 11, 2018 14:45 | April 13, 2018 09:30 | 1d 18h | 16,744 | 32K |
| 10 | October 24, 2018 14:45 | October 25, 2018 04:15 | 13h 30m | 13,199 | 13K |
Outage episodes by size in 2018: 332 reached 100+ customers, 196 reached 1,000+ customers, 15 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 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 |
|---|---|---|---|---|---|
| Southern California Edison Co | 2018 | 2.3 hrs | 0.87 | 71 min | 0.72 |
| Arizona Public Service Co | 2018 | 2.6 hrs | 1.08 | 86 min | 0.84 |
| Imperial Irrigation District | 2018 | 59 min | 0.58 | 59 min | 0.58 |
| Anza Electric Coop Inc | 2018 | 108.7 hrs | 11.22 | 105.9 hrs | 10.94 |
| City of Riverside - (CA) | 2018 | 90 min | 0.88 | 54 min | 0.82 |
| 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 91% of California's customers in 2018; 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, 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/riverside-county