Walla Walla County, Washington Power Outages, 2017 to 2023

Walla Walla County, Washington had 5 major outages from 2017 to 2023

Below middle outage time among US counties

Residents here averaged 0.40 times the US outage time per person and 0.50 times the Washington rate. It ranks 21 of 34 in the state, where 1 has the most. Data confidence: High, with 7 years of records.

0.7major outages per year

4 of 7years with a major outage

19 hrslongest major outage

Dec, Novhardest months

December and November made up 50% of this county's outage time. The largest outage on record began Dec 29, 2017, reached 9,558 customers, and left at least 200 customers out for 19.2 hours.

Outage time per resident, rated Washington counties

MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

100K

200K

300K

400K

2017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2017	200,628	16	1
2018	85,382	21	2
2019	12,842	15	0
2020	39,388	17	1
2021	41,704	22	1
2022	19,129	21	0
2023	23,431	25	0

When outages hit

Share of this county's customer-hours by month.

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Dec 29, 2017	19.2	9,558	111,934
Nov 7, 2017	6.2	16,800	56,721
Jul 9, 2018	9.8	9,125	50,764
Sep 7, 2020	12.8	3,326	18,806
Dec 30, 2017	4.0	5,489	16,562

Hours measure how long at least 200 customers in the county were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

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How to read this

A major outage lasted at least 8 hours and reached customers equal to at least 1% of county residents.
Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.