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

Power outage history

Washington County Illinois

8.9hours

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

10th most of 101 in Illinois 1.4× the national median

Worst outage on record Jun 30, 2023 66% of customers out · 90% back in 3.3 days
Hours without power, average customer per year 8.9h / yr State average 2.9 h · national median 6.6 h
Major outages a year 3.6 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 3hours Median across major outages, from the peak
Longest single outage 3.9days Jun 30, 2023, over 1% of customers out
Outage hours on storm days 70% Share falling on days with a NOAA storm report here
Worst year 2023 33 hours without power, average customer
Electricity customers 7,318 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 Washington'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

2023 was the worst well-recorded year, at 33 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Washington, hours without power per customer

WashingtonUS median countyIllinois average
0 10 20 30 40 2.8 ’15 4.8 ’16 1.4 ’17 12 ’18 4.7 ’19 4.8 ’20 3.1 ’21 4.8 ’22 33 ’23 3.2 ’24 4.8 ’25 US 6.6 IL 2.9

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
Jun 30, 2023 Thunderstorms 4,804 66% 3.9 d 3.3 d 194k
Jun 28, 2018 Thunderstorms 1,964 27% 47 h 11 h 35k
Aug 10, 2020 Thunderstorms 1,381 19% 45 h 31 h 20k
Feb 24, 2016 No storm report 1,114 15% 36 h 30 h 15k
Jan 6, 2025 Winter storm 3,750 51% 9.0 h 4.5 h 14k
Jul 29, 2023 Heat 1,062 15% 42 h 25 h 12k
May 31, 2018 Tropical Storm Alberto 2,317 32% 16 h 14 h 12k
Mar 31, 2023 No storm report 1,420 19% 9.8 h 7.0 h 8.9k
Jul 13, 2016 Thunderstorms 1,347 18% 20 h 20 h 8.6k
Feb 16, 2021 Winter storm 2,286 31% 4.8 h 4.5 h 7.6k
Feb 17, 2022 No storm report 1,234 17% 11 h 14 h 7.4k
Sep 10, 2015 Thunderstorms 950 13% 12 h 9.5 h 6.7k

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.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +6h 90% by +12h

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

  • Thunderstorms 57%
  • No storm on record 30%
  • Winter storm 5.8%
  • Heat 2.9%
  • Tropical storm 2.6%
  • Flooding 0.6%
  • Tornadoes 0.5%

Who keeps the lights on

Utilities serving Washington

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Ameren Illinois Company Investor Owned 287 130 1.19 16.7 1.1M
Clinton County Elec Coop, Inc IL – – – 12.7 77k
Tri-County Electric Coop, Inc (IL) Cooperative 132 63 1.64 16.2 16k
Egyptian Electric Coop Assn Cooperative 773 24 4.62 16.2 14k

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 Illinois

Where it is darkest

Hours / yr64+

All Illinois 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 7,318 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 →