County annual report · FIPS 17123
2025 Marshall County, IL Power Outage Report
In 2025, customers in Marshall County, IL went without power for an average of 2.7 hours, a total of 22K customer-hours (Illinois average 2.5 hours). That ranks 60th worst of 102 Illinois counties and 2162nd 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 Marshall 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 25, 2025 00:45 | July 25, 2025 05:15 | 4h 30m | 817 | 979 |
| 2 | May 20, 2025 07:15 | May 21, 2025 00:30 | 17h 15m | 720 | 724 |
| 3 | March 14, 2025 18:45 | March 16, 2025 03:45 | 1d 9h | 459 | 6,331 |
| 4 | September 21, 2025 23:15 | September 22, 2025 01:15 | 2h | 349 | 611 |
| 5 | March 20, 2025 07:15 | March 20, 2025 20:30 | 13h 15m | 304 | 1,473 |
| 6 | July 30, 2025 14:00 | July 30, 2025 19:45 | 5h 45m | 283 | 82 |
| 7 | December 28, 2025 16:15 | December 29, 2025 22:45 | 1d 6h | 209 | 1,245 |
| 8 | June 24, 2025 17:00 | June 24, 2025 18:45 | 1h 45m | 195 | 196 |
| 9 | March 11, 2025 14:30 | March 11, 2025 18:00 | 3h 30m | 184 | 112 |
| 10 | February 26, 2025 05:30 | February 26, 2025 19:15 | 13h 45m | 144 | 704 |
Outage episodes by size in 2025: 14 reached 100+ customers, 0 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 Marshall 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 |
| Commonwealth Edison Co | 2024 | 2.2 hrs | 0.68 | 36 min | 0.49 |
| Corn Belt Energy Corporation | 2024 | 5.2 hrs | 5.21 | 2.5 hrs | 4.68 |
| Ameren | - | - | - | - | - |
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 ÷ 7,906 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. Marshall County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marshall 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/marshall-county