Power outage history
Randolph County Illinois
4.4hours
without power for the average customer in a typical year, 2018–2025
51st most of 101 in Illinois 33% below the national median
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 Randolph's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2022 was the worst well-recorded year, at 7.4 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Randolph, hours without power per customer
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 |
|---|---|---|---|---|---|---|
| May 19, 2022 | Thunderstorms | 3,958 | 26% | 26 h | 23 h | 48k |
| Jul 13, 2016 | Thunderstorms | 2,692 | 18% | 48 h | 38 h | 43k |
| Mar 14, 2025 | Tornadoes | 2,173 | 15% | 22 h | 16 h | 24k |
| Jul 29, 2023 | Heat | 4,304 | 29% | 28 h | 13 h | 22k |
| Jan 9, 2022 | No storm report | 2,113 | 14% | 19 h | 21 h | 21k |
| Dec 5, 2024 | No storm report | 3,107 | 21% | 10 h | 6.5 h | 19k |
| Mar 1, 2017 | Tornadoes | 5,023 | 34% | 3.5 h | 3.0 h | 16k |
| Apr 16, 2017 | No storm report | 5,667 | 38% | 3.5 h | 2.5 h | 15k |
| Apr 26, 2017 | Thunderstorms | 3,283 | 22% | 8.2 h | 2.5 h | 14k |
| Apr 24, 2021 | No storm report | 3,857 | 26% | 4.2 h | 2.0 h | 11k |
| Aug 13, 2019 | No storm report | 1,344 | 9% | 10 h | 9.0 h | 9.5k |
| Aug 10, 2020 | No storm report | 1,125 | 8% | 25 h | 24 h | 9.3k |
| May 31, 2018 | Tropical Storm Alberto | 1,434 | 10% | 17 h | 16 h | 8.9k |
| Jul 28, 2022 | No storm report | 2,299 | 15% | 6.5 h | 5.8 h | 8.5k |
| Oct 24, 2021 | Tornadoes | 491 | 3% | 22 h | – | 7.9k |
| Aug 16, 2016 | No storm report | 2,954 | 20% | 3.0 h | 30 min | 7.7k |
| Feb 23, 2023 | No storm report | 517 | 3% | 15 h | – | 7.6k |
| Sep 28, 2015 | No storm report | 2,821 | 19% | 3.8 h | 3.2 h | 7.6k |
| Mar 14, 2024 | No storm report | 1,189 | 8% | 11 h | 8.5 h | 7.3k |
| Dec 18, 2025 | No storm report | 2,048 | 14% | 9.0 h | 9.8 h | 6.9k |
| Jul 1, 2023 | Thunderstorms | 615 | 4% | 22 h | – | 6.9k |
| Apr 2, 2025 | No storm report | 2,052 | 14% | 12 h | 10 h | 6.7k |
| Dec 4, 2015 | No storm report | 1,179 | 8% | 5.5 h | 5.5 h | 6.5k |
| Apr 5, 2023 | No storm report | 757 | 5% | 17 h | 9.5 h | 6.3k |
| Apr 30, 2017 | Flooding | 2,267 | 15% | 3.5 h | 3.5 h | 6.3k |
| Apr 29, 2016 | No storm report | 1,916 | 13% | 3.2 h | 3.0 h | 6.0k |
| Apr 2, 2024 | Thunderstorms | 1,011 | 7% | 7.5 h | 16 h | 5.9k |
| May 8, 2024 | Thunderstorms | 2,039 | 14% | 6.5 h | 30 min | 5.6k |
| Apr 29, 2017 | No storm report | 1,353 | 9% | 4.2 h | 3.2 h | 5.5k |
| Feb 24, 2016 | No storm report | 1,038 | 7% | 12 h | 12 h | 5.2k |
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 Randolph from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 65%
- Thunderstorms 18%
- Tornadoes 8.7%
- Heat 5.9%
- Tropical storm 2.4%
Who keeps the lights on
Utilities serving Randolph
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 |
| Monroe County Elec Coop, Inc | IL | 209 | 209 | 1.44 | 14.4 | 103k |
| City of Red Bud | IL | – | – | – | – | 20k |
| 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
- Washington 8.9 h
- Perry, MO 7.7 h
- Monroe 7.3 h
- Perry 5.6 h
- St. Clair 5.3 h
- Ste. Genevieve, MO 4.5 h
- Randolph (this county) 4.4 h
- Jackson 3.7 h
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 14,970 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 →