County annual report · FIPS 17181
2024 Union County, IL Power Outage Report
In 2024, customers in Union County, IL went without power for an average of 4.4 hours, a total of 46K customer-hours (Illinois average 3.0 hours). That ranks 36th worst of 102 Illinois counties and 1735th of 2,990 nationally.
Compared with IL, the US and 2023
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Union County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 30, 2024 23:30 | July 1, 2024 01:45 | 2h 15m | 3,017 | 3,120 |
| 2 | May 27, 2024 01:15 | May 28, 2024 22:15 | 1d 21h | 2,943 | 30K |
| 3 | April 2, 2024 09:45 | April 3, 2024 01:00 | 15h 15m | 1,968 | 3,801 |
| 4 | July 9, 2024 20:15 | July 10, 2024 01:00 | 4h 45m | 1,725 | 1,567 |
| 5 | May 28, 2024 23:45 | May 29, 2024 03:30 | 3h 45m | 1,505 | 2,283 |
| 6 | June 16, 2024 20:30 | June 17, 2024 02:45 | 6h 15m | 313 | 518 |
| 7 | June 5, 2024 17:00 | June 5, 2024 21:00 | 4h | 115 | 36 |
| 8 | May 8, 2024 04:00 | May 8, 2024 14:45 | 10h 45m | 112 | 833 |
| 9 | August 30, 2024 16:15 | August 30, 2024 17:30 | 1h 15m | 104 | 106 |
| 10 | June 17, 2024 20:45 | June 18, 2024 01:00 | 4h 15m | 78 | 160 |
Outage episodes by size in 2024: 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 Union County reported on EIA Form 861 for 2024, 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 |
| Egyptian Electric Coop Assn | 2024 | 2.1 hrs | - | - | - |
| Ameren | - | - | - | - | - |
| Southern 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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 10,277 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union County, IL annual power outage report, 2024, 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/2024/illinois/union-county