County annual report · FIPS 17003
2023 Alexander County, IL Power Outage Report
In 2023, customers in Alexander County, IL went without power for an average of 2.1 hours, a total of 5,926 customer-hours (Illinois average 4.0 hours). That ranks 80th worst of 102 Illinois counties and 2250th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Alexander County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 10, 2023 02:15 | February 10, 2023 02:45 | 30m | 747 | 187 |
| 2 | December 5, 2023 23:15 | December 6, 2023 01:45 | 2h 30m | 733 | 910 |
| 3 | July 29, 2023 23:45 | July 30, 2023 10:45 | 11h | 639 | 1,168 |
| 4 | July 31, 2023 14:30 | July 31, 2023 16:30 | 2h | 443 | 206 |
| 5 | July 18, 2023 00:30 | July 18, 2023 08:15 | 7h 45m | 290 | 394 |
| 6 | July 1, 2023 23:30 | July 3, 2023 00:00 | 1d | 230 | 148 |
| 7 | July 31, 2023 17:30 | July 31, 2023 17:45 | 15m | 230 | 58 |
| 8 | May 5, 2023 05:15 | May 5, 2023 11:15 | 6h | 199 | 945 |
| 9 | May 9, 2023 04:15 | May 9, 2023 10:45 | 6h 30m | 188 | 571 |
| 10 | June 4, 2023 22:15 | June 4, 2023 23:45 | 1h 30m | 161 | 202 |
Outage episodes by size in 2023: 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 2023, 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 | 2023 | 9.9 hrs | 1.33 | 1.9 hrs | 0.82 |
| 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 2023; 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, 2023, 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/2023/illinois/alexander-county