County annual report · FIPS 17109
2025 McDonough County, IL Power Outage Report
In 2025, customers in McDonough County, IL went without power for an average of 1.8 hours, a total of 23K customer-hours (Illinois average 2.5 hours). That ranks 80th worst of 102 Illinois counties and 2505th 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 McDonough 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 5, 2025 17:30 | July 5, 2025 23:30 | 6h | 1,371 | 6,604 |
| 2 | April 21, 2025 00:45 | April 21, 2025 20:15 | 19h 30m | 819 | 6,409 |
| 3 | May 8, 2025 05:15 | May 8, 2025 08:30 | 3h 15m | 815 | 2,649 |
| 4 | December 19, 2025 20:15 | December 19, 2025 20:30 | 15m | 642 | 161 |
| 5 | May 7, 2025 05:30 | May 7, 2025 06:15 | 45m | 628 | 378 |
| 6 | May 6, 2025 05:30 | May 6, 2025 06:30 | 1h | 376 | 345 |
| 7 | March 3, 2025 21:30 | March 4, 2025 00:00 | 2h 30m | 356 | 564 |
| 8 | February 18, 2025 06:00 | February 18, 2025 06:45 | 45m | 229 | 172 |
| 9 | March 14, 2025 21:45 | March 14, 2025 23:45 | 2h | 229 | 190 |
| 10 | March 15, 2025 10:15 | March 15, 2025 12:00 | 1h 45m | 228 | 346 |
Outage episodes by size in 2025: 16 reached 100+ customers, 1 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 McDonough 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 | - | - | - | - | - |
| McDonough Power Coop | - | - | - | - | - |
| Spoon River Electric Coop, Inc | - | - | - | - | - |
| Western Illinois Elec Coop | - | - | - | - | - |
| City of Bushnell - (IL) | - | - | - | - | - |
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 ÷ 12,745 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. McDonough County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), McDonough 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/mcdonough-county