County annual report · FIPS 17001
2025 Adams County, IL Power Outage Report
In 2025, customers in Adams County, IL went without power for an average of 2.8 hours, a total of 89K customer-hours (Illinois average 2.5 hours). That ranks 59th worst of 102 Illinois counties and 2137th of 3,000 nationally.
Compared with IL, the US and 2024
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Adams County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 26, 2025 14:15 | August 5, 2025 18:15 | 10d 4h | 6,159 | 16K |
| 2 | December 28, 2025 19:00 | December 29, 2025 05:00 | 10h | 4,653 | 6,633 |
| 3 | March 14, 2025 21:30 | March 19, 2025 19:30 | 4d 22h | 3,890 | 15K |
| 4 | June 12, 2025 16:00 | June 18, 2025 06:30 | 5d 14h | 1,588 | 2,530 |
| 5 | November 5, 2025 06:30 | November 5, 2025 08:45 | 2h 15m | 1,271 | 1,728 |
| 6 | March 5, 2025 12:45 | March 6, 2025 06:00 | 17h 15m | 1,134 | 6,242 |
| 7 | April 20, 2025 23:30 | April 21, 2025 17:30 | 18h | 1,031 | 3,770 |
| 8 | July 12, 2025 02:00 | July 12, 2025 17:45 | 15h 45m | 976 | 3,142 |
| 9 | May 13, 2025 05:00 | May 23, 2025 19:15 | 10d 14h | 831 | 2,924 |
| 10 | October 29, 2025 13:30 | October 29, 2025 23:15 | 9h 45m | 486 | 793 |
Outage episodes by size in 2025: 32 reached 100+ customers, 7 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Adams County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Ameren Illinois Company | 2024 | 3.7 hrs | 1.13 | 2.0 hrs | 0.91 |
| Adams Electric Coop | 2018 | 2.2 hrs | 1.12 | 2.2 hrs | 1.12 |
| Ameren | - | - | - | - | - |
| Illinois Rural Electric Coop | - | - | - | - | - |
| Western Illinois Elec Coop | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Illinois's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 31,760 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Adams County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Adams County, IL annual power outage report, 2025, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/illinois/adams-county