County annual report · FIPS 17029
2025 Coles County, IL Power Outage Report
In 2025, customers in Coles County, IL went without power for an average of 3.6 hours, a total of 88K customer-hours (Illinois average 2.5 hours). That ranks 51st worst of 102 Illinois counties and 1872nd 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 Coles 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 | March 30, 2025 18:30 | March 31, 2025 08:00 | 13h 30m | 5,432 | 11K |
| 2 | March 5, 2025 01:15 | March 5, 2025 05:15 | 4h | 2,985 | 3,231 |
| 3 | March 14, 2025 22:45 | March 17, 2025 19:30 | 2d 20h | 2,782 | 20K |
| 4 | June 18, 2025 17:30 | June 20, 2025 01:30 | 1d 8h | 2,233 | 21K |
| 5 | February 16, 2025 09:00 | February 16, 2025 21:30 | 12h 30m | 1,821 | 4,216 |
| 6 | November 25, 2025 09:00 | November 25, 2025 17:45 | 8h 45m | 1,227 | 3,704 |
| 7 | November 25, 2025 19:45 | November 25, 2025 20:00 | 15m | 1,220 | 305 |
| 8 | November 26, 2025 15:15 | November 26, 2025 17:45 | 2h 30m | 1,177 | 877 |
| 9 | May 16, 2025 20:00 | May 17, 2025 07:45 | 11h 45m | 984 | 2,908 |
| 10 | April 2, 2025 23:45 | April 3, 2025 15:45 | 16h | 864 | 5,107 |
Outage episodes by size in 2025: 32 reached 100+ customers, 8 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 Coles 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 |
| Ameren | - | - | - | - | - |
| Coles-Moultrie Electric Coop | - | - | - | - | - |
| Enerstar Power Corp | - | - | - | - | - |
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 ÷ 24,455 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. Coles County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Coles 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/coles-county