Power Out Map
– 0% of Grant out 0 customers out in Washington

Power outage history

Grant County Washington

0.3hours

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

31st most of 31 in Washington 95% below the national median

Worst outage on record Feb 23, 2020 3% of customers out · lasted 17 hours
Hours without power, average customer per year 0.3h / yr State average 5.3 h · national median 6.6 h
Major outages a year 0.0 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% – Median across major outages, from the peak
Longest single outage 17hours Feb 23, 2020, over 1% of customers out
Outage hours on storm days 22% Share falling on days with a NOAA storm report here
Worst year 2020 1.2 hours without power, average customer
Electricity customers 50,667 ORNL customer model · 5 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 Grant'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

2020 was the worst well-recorded year, at 1.2 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Grant, hours without power per customer

GrantUS median countyWashington average
0 2 4 6 8 ’16 ’17 ’18 0.3 ’19 1.2 ’20 0.1 ’21 0.1 ’22 0.1 ’23 ’24 ’25 US 6.6 WA 5.3

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 23, 2020 No storm report 1,307 3% 17 h – 16k
May 30, 2020 Thunderstorms 776 2% 7.8 h – 5.8k
Aug 9, 2019 No storm report 1,457 3% 1.2 h – 1.8k
Nov 27, 2019 No storm report 632 1% 2.2 h – 1.4k
Dec 27, 2020 No storm report 920 2% 48 min – 690
Aug 18, 2021 No storm report 608 1% 30 min – 304

When it happens

The outage clock

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

00061218 Jan inside

What was happening

Weather behind the outages

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

  • No storm on record 78%
  • Thunderstorms 22%

Who keeps the lights on

Utilities serving Grant

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Avista Corp Investor Owned 200 119 0.97 14.2 247k
PUD No 2 of Grant County Political Subdivision 84 – 0.42 6.2 43k
City of Coulee Dam WA – – – – 12k
Big Bend Electric Coop, Inc Cooperative 449 106 1.30 9.6 6.4k
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

Across Washington

Where it is darkest

Hours / yr64+

All Washington 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 50,667 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 →