– 0% of Clackamas out 0 customers out in Oregon

Power outage history

Clackamas County Oregon

18hours

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

2nd most of 32 in Oregon 2.8× the national median

Worst outage on record Feb 15, 2021 57% of customers out · 90% back in 6.4 days

Hours without power, average customer per year 18h / yr State average 7.9 h · national median 6.6 h

Major outages a year 1.3 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 40hours Median across major outages, from the peak

Longest single outage 23.5days Apr 20, 2020, over 1% of customers out

Outage hours on storm days 6% Share falling on days with a NOAA storm report here

Worst year 2021 3.2 days without power, average customer

Electricity customers 183,590 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 Clackamas'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

2021 was the worst well-recorded year, at 3.2 days for the average customer. Hatched years have a thin record and are left out of the averages.

Clackamas, hours without power per customer

ClackamasUS median countyOregon 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
Feb 12, 2021	No storm report	104,608	57%	11.4 d	6.4 d	13M
Sep 9, 2020	No storm report	20,934	11%	4.9 d	4.2 d	1.5M
Sep 7, 2020	No storm report	47,773	26%	45 h	2.2 d	1.3M
Apr 20, 2020	No storm report	7,454	4%	23.5 d	45 h	1.1M
Sep 9, 2022	No storm report	18,782	10%	2.6 d	47 h	878k
Jan 13, 2021	Flooding	36,724	20%	3.0 d	42 h	870k
Jan 13, 2024	No storm report	21,200	12%	3.4 d	3.1 d	867k
Dec 17, 2025	No storm report	35,531	19%	2.8 d	2.4 d	830k
Dec 27, 2022	No storm report	37,223	20%	2.4 d	39 h	745k
Apr 7, 2017	No storm report	57,520	31%	2.3 d	28 h	738k
Feb 24, 2025	Thunderstorms	31,094	17%	24 h	14 h	317k
Jan 11, 2017	No storm report	19,412	11%	34 h	23 h	228k
Nov 17, 2015	No storm report	20,089	11%	41 h	17 h	204k
Mar 15, 2015	No storm report	28,040	15%	24 h	19 h	175k
Jan 18, 2024	No storm report	12,364	7%	27 h	22 h	144k
Nov 4, 2022	Flooding	10,663	6%	21 h	17 h	132k
Jan 5, 2019	No storm report	21,536	12%	15 h	13 h	121k
Jan 7, 2022	No storm report	18,199	10%	14 h	9.8 h	106k
Oct 25, 2025	No storm report	13,479	7%	16 h	15 h	86k
Apr 11, 2022	No storm report	12,652	7%	12 h	8.0 h	85k
Oct 21, 2017	No storm report	7,689	4%	20 h	20 h	81k
Jun 26, 2019	Thunderstorms	16,602	9%	7.5 h	5.5 h	74k
Dec 26, 2024	Winter storm	13,709	7%	14 h	12 h	72k
Jan 9, 2024	No storm report	9,225	5%	13 h	12 h	68k
Dec 9, 2015	No storm report	11,141	6%	10 h	7.2 h	67k
Sep 18, 2021	No storm report	6,871	4%	15 h	14 h	63k
Jan 3, 2017	No storm report	6,279	3%	18 h	13 h	62k
Jan 1, 2016	No storm report	6,200	3%	12 h	5.8 h	59k
Jun 29, 2018	No storm report	9,431	5%	6.2 h	3.0 h	59k
Aug 29, 2015	No storm report	5,060	3%	16 h	20 h	54k

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 Clackamas from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

No storm on record 94%
Flooding 4.3%
Thunderstorms 1.7%

Who keeps the lights on

Utilities serving Clackamas

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

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Portland General Electric Co	Investor Owned	273	103	0.89	18.8	840k
Canby Utility Board	OR	14	14	0.11	8.1	78k
Bonneville 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

Marion 21 h
Clackamas (this county) 18 h
Multnomah 8.3 h
Yamhill 7.8 h
Washington 4.0 h
Hood River 3.4 h
Wasco 1.7 h

Across Oregon

Where it is darkest

Hours / yr64+

All Oregon 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 183,590 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 →