County annual report · FIPS 17067
2025 Hancock County, IL Power Outage Report
In 2025, customers in Hancock County, IL went without power for an average of 3.0 hours, a total of 27K customer-hours (Illinois average 2.5 hours). That ranks 56th worst of 102 Illinois counties and 2045th 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 Hancock 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 15, 2025 00:30 | March 16, 2025 22:45 | 1d 22h | 1,353 | 12K |
| 2 | October 6, 2025 21:00 | October 7, 2025 11:45 | 14h 45m | 703 | 792 |
| 3 | February 15, 2025 05:45 | February 15, 2025 10:45 | 5h | 616 | 1,965 |
| 4 | May 6, 2025 05:30 | May 6, 2025 06:15 | 45m | 598 | 449 |
| 5 | May 7, 2025 05:45 | May 7, 2025 13:15 | 7h 30m | 598 | 454 |
| 6 | February 15, 2025 13:00 | February 15, 2025 13:30 | 30m | 446 | 126 |
| 7 | July 11, 2025 21:45 | July 12, 2025 15:15 | 17h 30m | 384 | 2,668 |
| 8 | April 21, 2025 00:15 | April 21, 2025 16:00 | 15h 45m | 298 | 1,761 |
| 9 | March 4, 2025 08:00 | March 4, 2025 10:30 | 2h 30m | 238 | 488 |
| 10 | January 15, 2025 14:30 | January 15, 2025 16:15 | 1h 45m | 186 | 158 |
Outage episodes by size in 2025: 12 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 Hancock 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 | - | - | - | - | - |
| 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 ÷ 9,010 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. Hancock County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hancock 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/hancock-county