Power outage history
Piatt County Illinois
6.6hours
without power for the average customer in a typical year, 2018–2025
21st most of 101 in Illinois close to 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 Piatt's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2023 was the worst well-recorded year, at 16 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Piatt, 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 |
|---|---|---|---|---|---|---|
| Jun 29, 2023 | Thunderstorms | 1,811 | 29% | 3.3 d | 3.0 d | 64k |
| Oct 23, 2022 | No storm report | 5,277 | 86% | 6.8 h | 3.5 h | 23k |
| Mar 18, 2021 | No storm report | 5,305 | 86% | 7.2 h | 3.2 h | 23k |
| Mar 3, 2023 | No storm report | 6,148 | 100% | 22 h | 3.2 h | 15k |
| Apr 8, 2020 | Thunderstorms | 2,268 | 37% | 18 h | 12 h | 12k |
| Feb 26, 2017 | No storm report | 4,812 | 78% | 2.8 h | 1.2 h | 12k |
| Feb 24, 2016 | Winter storm | 2,278 | 37% | 22 h | 5.8 h | 10k |
| Nov 25, 2025 | No storm report | 2,717 | 44% | 5.2 h | 4.8 h | 9.8k |
| Mar 15, 2025 | Tornadoes | 594 | 10% | 15 h | 5.8 h | 6.6k |
| Jul 25, 2025 | No storm report | 2,109 | 34% | 2.8 h | 2.8 h | 5.8k |
| Mar 6, 2022 | No storm report | 4,131 | 67% | 2.5 h | 48 min | 5.7k |
| Dec 30, 2023 | No storm report | 1,176 | 19% | 33 h | 33 h | 5.6k |
| Jul 22, 2016 | No storm report | 4,224 | 69% | 1.5 h | 1.0 h | 5.6k |
| Feb 10, 2017 | No storm report | 1,426 | 23% | 8.2 h | 13 h | 5.3k |
| Jan 3, 2021 | Winter storm | 1,124 | 18% | 14 h | 5.5 h | 4.7k |
| Aug 1, 2022 | Thunderstorms | 1,989 | 32% | 4.0 h | 2.2 h | 4.1k |
| Oct 20, 2018 | No storm report | 884 | 14% | 7.0 h | 5.0 h | 4.0k |
| Nov 27, 2018 | No storm report | 116 | 2% | 30 h | – | 3.4k |
| Jul 17, 2016 | No storm report | 760 | 12% | 5.2 h | 4.0 h | 3.4k |
| Aug 12, 2023 | No storm report | 102 | 2% | 40 h | – | 3.4k |
| Sep 21, 2018 | No storm report | 1,838 | 30% | 6.0 h | 1.5 h | 3.2k |
| Jul 18, 2025 | No storm report | 2,110 | 34% | 1.5 h | 1.5 h | 3.2k |
| May 9, 2018 | Thunderstorms | 565 | 9% | 9.2 h | 7.2 h | 3.1k |
| Apr 12, 2019 | No storm report | 2,236 | 36% | 1.8 h | 1.2 h | 3.0k |
| Apr 17, 2015 | No storm report | 872 | 14% | 4.8 h | 1.8 h | 2.9k |
| Oct 21, 2019 | No storm report | 1,486 | 24% | 3.0 h | 2.8 h | 2.7k |
| Apr 21, 2016 | No storm report | 5,103 | 83% | 1.0 h | 30 min | 2.7k |
| Mar 19, 2025 | No storm report | 664 | 11% | 6.2 h | 1.8 h | 2.2k |
| Sep 8, 2015 | No storm report | 641 | 10% | 4.5 h | 4.5 h | 2.1k |
| Jul 10, 2024 | Hurricane Beryl | 445 | 7% | 5.5 h | 11 h | 2.1k |
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 Piatt from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 61%
- Thunderstorms 31%
- Tornadoes 3.0%
- Winter storm 2.3%
- Tropical storm 1.1%
- Flooding 0.7%
Who keeps the lights on
Utilities serving Piatt
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 |
| Corn Belt Energy Corporation | Cooperative | 1,365 | 155 | 7.65 | 15.6 | 35k |
| Eastern Illinois Elec Coop | Cooperative | 223 | 157 | 2.22 | 17.7 | 11k |
| Coles-Moultrie Electric Coop | Cooperative | – | – | – | 17.6 | 8.5k |
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.
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 6,148 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 →