– 0% of Riverside out 0 customers out in California

Power outage history

Riverside County California

5.0hours

without power for the average customer in a typical year, 2018–2025

37th most of 56 in California 24% below the national median

Worst outage on record Jan 10, 2025 12% of customers out · 90% back in 35 hours

Hours without power, average customer per year 5.0h / yr State average 6.2 h · national median 6.6 h

Major outages a year 0.1 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 35hours Median across major outages, from the peak

Longest single outage 3.1days Jan 8, 2025, over 1% of customers out

Outage hours on storm days 93% Share falling on days with a NOAA storm report here

Worst year 2025 12 hours without power, average customer

Electricity customers 853,923 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Riverside's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2025 was the worst well-recorded year, at 12 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Riverside, hours without power per customer

RiversideUS median countyCalifornia average

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began	Storm	Peak out	Share	Lasted	90% restored	Customer-hours
Jan 8, 2025	Windstorm	105,557	12%	3.1 d	35 h	4.7M
Jan 20, 2025	Windstorm	32,991	4%	27 h	15 h	613k
Jan 23, 2025	Windstorm	43,220	5%	21 h	14 h	589k
Jan 14, 2025	Windstorm	18,476	2%	34 h	9.0 h	427k
Jan 7, 2025	Windstorm	30,143	4%	8.0 h	1.5 h	161k
Dec 10, 2024	Windstorm	12,380	1%	19 h	8.5 h	158k
Jan 27, 2023	No storm report	14,732	2%	6.0 h	5.5 h	85k
Apr 29, 2016	No storm report	20,239	2%	7.2 h	7.2 h	74k
Jul 12, 2020	Heat	11,896	1%	6.5 h	3.8 h	72k
Jan 13, 2025	Windstorm	10,292	1%	6.8 h	16 h	66k
Sep 2, 2019	Flooding	11,399	1%	5.8 h	1.8 h	65k
Oct 15, 2018	Windstorm	18,744	2%	5.0 h	17 h	65k
Oct 26, 2020	Wildfire	12,841	2%	6.5 h	13 h	63k
Sep 17, 2024	Wildfire	12,572	1%	5.2 h	4.2 h	61k
Dec 7, 2017	Windstorm	12,207	1%	4.5 h	14 h	50k
Apr 30, 2020	Heat	18,754	2%	2.5 h	1.0 h	43k
Jul 26, 2021	Flooding	13,233	2%	4.2 h	14 h	42k
Jan 19, 2021	Windstorm	14,445	2%	3.5 h	14 h	38k
Aug 7, 2025	No storm report	16,521	2%	3.0 h	2.8 h	37k
Feb 25, 2021	Windstorm	12,502	1%	3.5 h	14 h	37k
Nov 12, 2018	Windstorm	12,037	1%	3.8 h	4.0 h	37k
May 19, 2019	No storm report	12,244	1%	3.0 h	4.5 h	35k
Jun 15, 2021	Heat	19,566	2%	2.0 h	5.2 h	32k
Nov 25, 2019	No storm report	10,939	1%	2.8 h	30 min	30k
Nov 29, 2019	Winter storm	13,381	2%	2.5 h	13 h	29k
Mar 24, 2019	No storm report	11,832	1%	4.0 h	4.0 h	28k
Sep 30, 2023	No storm report	11,848	1%	3.8 h	5.0 h	27k
Jan 9, 2018	Flooding	12,008	1%	2.5 h	1.0 h	26k
Jun 5, 2021	Heat	13,453	2%	2.0 h	2.0 h	26k
Nov 7, 2024	Windstorm	14,151	2%	2.5 h	2.5 h	25k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Riverside from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Windstorm 85%
No storm on record 6.9%
Heat 2.9%
Wildfire 2.4%
Flooding 1.6%
Winter storm 0.6%

Who keeps the lights on

Utilities serving Riverside

As each utility reports to the Energy Information Administration for its whole California territory, not this county alone. Outage minutes include major storm days.

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Southern California Edison Co	Investor Owned	545	116	1.39	31.5	4.6M
Imperial Irrigation District	Political Subdivision	114	56	0.72	18.7	143k
City of Riverside	Municipal	88	76	0.49	21.9	101k
City of Banning	CA	–	–	–	19.6	66k
Anza Electric Coop Inc	CA	414	388	4.59	19.1	50k
City of Moreno Valley	Municipal	85	85	0.75	40.6	8.0k
City of Corona	Municipal	178	175	1.87	15.8	1.3k
WAPA-- Western Area Power Administration	Federal	–	–	–	–	–

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

La Paz, AZ 10 h
San Bernardino 6.8 h
Riverside (this county) 5.0 h
Imperial 4.4 h
San Diego 3.3 h
Orange 2.3 h

Across California

Where it is darkest

Hours / yr64+

All California counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 853,923 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →