County annual report · FIPS 17071
2025 Henderson County, IL Power Outage Report
In 2025, customers in Henderson County, IL went without power for an average of 10.1 hours, a total of 34K customer-hours (Illinois average 2.5 hours). That ranks 15th worst of 102 Illinois counties and 792nd 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 Henderson 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 | October 24, 2025 05:15 | October 24, 2025 08:30 | 3h 15m | 1,915 | 6,224 |
| 2 | November 7, 2025 06:15 | November 7, 2025 10:00 | 3h 45m | 1,913 | 7,174 |
| 3 | March 15, 2025 02:15 | March 15, 2025 11:30 | 9h 15m | 1,391 | 427 |
| 4 | July 26, 2025 12:45 | July 27, 2025 00:15 | 11h 30m | 1,375 | 6,886 |
| 5 | March 15, 2025 15:30 | March 15, 2025 21:30 | 6h | 1,192 | 4,472 |
| 6 | October 21, 2025 00:00 | October 22, 2025 01:15 | 1d 1h | 586 | 2,077 |
| 7 | July 18, 2025 04:15 | July 18, 2025 09:45 | 5h 30m | 245 | 252 |
| 8 | November 26, 2025 09:00 | November 27, 2025 11:45 | 1d 2h | 151 | 1,902 |
| 9 | October 20, 2025 17:00 | October 20, 2025 19:15 | 2h 15m | 126 | 284 |
| 10 | December 28, 2025 23:15 | December 29, 2025 17:30 | 18h 15m | 83 | 252 |
Outage episodes by size in 2025: 9 reached 100+ customers, 5 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 Henderson 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 | - | - | - | - | - |
| 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 ÷ 3,381 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. Henderson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Henderson 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/henderson-county