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

Power outage history

Marshall County Illinois

8.8hours

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

11th most of 101 in Illinois 1.3× the national median

Worst outage on record Jul 15, 2024 70% of customers out · 90% back in 2.7 days
Hours without power, average customer per year 8.8h / yr State average 2.9 h · national median 6.6 h
Major outages a year 3.0 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 3.8days Jul 15, 2024, over 1% of customers out
Outage hours on storm days 66% Share falling on days with a NOAA storm report here
Worst year 2024 32 hours without power, average customer
Electricity customers 7,906 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 Marshall'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

2024 was the worst well-recorded year, at 32 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Marshall, hours without power per customer

MarshallUS median countyIllinois average
0 10 20 30 40 17 ’15 4.1 ’16 1.6 ’17 4.3 ’18 3.9 ’19 11 ’20 5.0 ’21 4.3 ’22 7.2 ’23 32 ’24 2.7 ’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
Jul 15, 2024 Thunderstorms 5,527 70% 3.8 d 2.7 d 213k
Dec 28, 2015 Ice storm 4,821 61% 2.3 d 28 h 101k
Aug 10, 2020 Thunderstorms 1,342 17% 3.7 d 2.5 d 50k
Jul 11, 2020 No storm report 1,016 13% 38 h 33 h 14k
Nov 25, 2018 No storm report 678 9% 36 h 28 h 12k
Nov 21, 2015 Winter storm 1,114 14% 15 h 5.5 h 10k
Feb 8, 2024 Thunderstorms 2,695 34% 4.2 h 2.0 h 9.6k
Feb 12, 2019 No storm report 533 7% 2.0 d 41 h 9.4k
Jun 29, 2023 Thunderstorms 1,138 14% 17 h 15 h 9.3k
Jan 1, 2021 Ice storm 1,728 22% 18 h 12 min 7.8k
Dec 14, 2022 No storm report 1,649 21% 5.0 h 11 h 7.7k
Apr 16, 2024 No storm report 2,328 29% 4.8 h 9.8 h 7.3k

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 +16h

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

  • Thunderstorms 62%
  • No storm on record 34%
  • Ice storm 1.6%
  • Heat 0.8%

Who keeps the lights on

Utilities serving Marshall

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
Commonwealth Edison Co Investor Owned 77 38 0.66 17.7 3.8M
Ameren Illinois Company Investor Owned 287 130 1.19 16.7 1.1M
Corn Belt Energy Corporation Cooperative 1,365 155 7.65 15.6 35k

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 7,906 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 →