County annual report · FIPS 17003
2025 Alexander County, IL Power Outage Report
In 2025, customers in Alexander County, IL went without power for an average of 7.5 hours, a total of 21K customer-hours (Illinois average 2.5 hours). That ranks 24th worst of 102 Illinois counties and 1083rd 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 Alexander 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 13, 2025 12:45 | March 13, 2025 15:15 | 2h 30m | 737 | 600 |
| 2 | January 5, 2025 17:15 | January 7, 2025 21:00 | 2d 3h | 670 | 14K |
| 3 | March 30, 2025 23:30 | March 31, 2025 10:15 | 10h 45m | 637 | 2,312 |
| 4 | October 7, 2025 13:45 | October 8, 2025 01:00 | 11h 15m | 473 | 692 |
| 5 | June 14, 2025 03:00 | June 14, 2025 11:00 | 8h | 302 | 1,188 |
| 6 | June 14, 2025 23:00 | June 14, 2025 23:15 | 15m | 298 | 75 |
| 7 | April 13, 2025 19:15 | April 14, 2025 06:15 | 11h | 295 | 597 |
| 8 | January 19, 2025 09:15 | January 19, 2025 13:15 | 4h | 235 | 121 |
| 9 | September 14, 2025 23:45 | September 15, 2025 02:30 | 2h 45m | 233 | 553 |
| 10 | November 3, 2025 23:00 | November 3, 2025 23:15 | 15m | 227 | 57 |
Outage episodes by size in 2025: 12 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 Alexander 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 |
| Southern Illinois Elec Coop | - | - | - | - | - |
| Cairo Public Utility Company | - | - | - | - | - |
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 ÷ 2,842 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. Alexander County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Alexander 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/alexander-county