Power outage history
Adams County Illinois
2.1hours
without power for the average customer in a typical year, 2018–2025
91st most of 101 in Illinois 68% 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 Adams's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 2.8 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Adams, 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 |
|---|---|---|---|---|---|---|
| Jul 13, 2015 | Heat | 21,688 | 68% | 2.9 d | 2.0 d | 770k |
| Jul 13, 2016 | Thunderstorms | 6,703 | 21% | 17 h | 9.0 h | 38k |
| Jul 1, 2023 | Thunderstorms | 5,135 | 16% | 21 h | 11 h | 36k |
| Nov 11, 2015 | Thunderstorms | 2,210 | 7% | 16 h | 14 h | 17k |
| Jul 29, 2025 | Thunderstorms | 6,159 | 19% | 7.5 h | 2.8 h | 15k |
| Mar 14, 2025 | No storm report | 3,890 | 12% | 11 h | 4.5 h | 13k |
| May 10, 2020 | No storm report | 6,772 | 21% | 2.0 h | 30 min | 13k |
| Sep 18, 2022 | Thunderstorms | 1,599 | 5% | 12 h | 12 h | 12k |
| Nov 27, 2019 | Windstorm | 3,603 | 11% | 7.2 h | 4.5 h | 12k |
| Nov 19, 2017 | No storm report | 4,181 | 13% | 2.8 h | 48 min | 10k |
| Jan 1, 2021 | Winter storm | 1,866 | 6% | 16 h | 7.8 h | 9.9k |
| Jun 23, 2024 | No storm report | 2,729 | 9% | 5.8 h | 2.0 h | 9.8k |
| Dec 1, 2024 | No storm report | 3,456 | 11% | 2.2 h | 1.2 h | 7.4k |
| Jul 31, 2024 | No storm report | 4,207 | 13% | 5.2 h | 4.5 h | 6.7k |
| Jul 24, 2015 | No storm report | 4,475 | 14% | 1.8 h | 30 min | 6.7k |
| Jan 17, 2020 | No storm report | 2,336 | 7% | 4.0 h | 2.2 h | 6.7k |
| Dec 28, 2025 | No storm report | 4,653 | 15% | 7.2 h | 7.0 h | 6.3k |
| Jul 12, 2015 | Heat | 3,192 | 10% | 2.5 h | 1.2 h | 6.2k |
| Sep 1, 2015 | No storm report | 5,742 | 18% | 1.2 h | 48 min | 5.9k |
| Jun 13, 2024 | Thunderstorms | 1,601 | 5% | 4.5 h | 5.0 h | 5.9k |
| Jun 17, 2022 | Thunderstorms | 3,248 | 10% | 2.5 h | 1.2 h | 5.9k |
| Apr 13, 2022 | No storm report | 2,719 | 9% | 3.2 h | 13 h | 5.5k |
| Aug 26, 2024 | No storm report | 4,141 | 13% | 1.5 h | 1.0 h | 5.4k |
| Aug 26, 2021 | Thunderstorms | 1,048 | 3% | 6.2 h | – | 5.4k |
| Mar 5, 2025 | No storm report | 1,134 | 4% | 5.0 h | – | 5.3k |
| Jun 29, 2023 | Thunderstorms | 1,972 | 6% | 6.5 h | 6.2 h | 5.2k |
| Jul 7, 2016 | Thunderstorms | 1,986 | 6% | 4.8 h | 3.8 h | 5.0k |
| Oct 31, 2024 | Tornadoes | 796 | 3% | 7.5 h | – | 4.1k |
| Jun 25, 2024 | No storm report | 1,365 | 4% | 4.2 h | – | 3.9k |
| Sep 27, 2020 | No storm report | 796 | 3% | 6.5 h | – | 3.7k |
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.
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 Adams from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 57%
- Thunderstorms 33%
- Windstorm 3.5%
- Winter storm 3.5%
- Tornadoes 2.4%
- Heat 0.6%
Who keeps the lights on
Utilities serving Adams
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 |
| Illinois Rural Electric Coop | IL | 112 | 112 | – | 17.6 | 127k |
| Adams Electric Coop | IL | 170 | 170 | 1.29 | 14.7 | 119k |
| Western Illinois Elec Coop | IL | – | – | – | – | 36k |
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
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 31,760 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 →