County annual report · FIPS 17181
2023 Union County, IL Power Outage Report
In 2023, customers in Union County, IL went without power for an average of 2.0 hours, a total of 20K customer-hours (Illinois average 4.0 hours). That ranks 82nd worst of 102 Illinois counties and 2295th 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 Union 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 | June 17, 2023 22:15 | June 18, 2023 02:00 | 3h 45m | 3,049 | 4,509 |
| 2 | August 5, 2023 09:00 | August 6, 2023 06:15 | 21h 15m | 1,609 | 4,036 |
| 3 | March 24, 2023 03:45 | March 24, 2023 13:30 | 9h 45m | 1,132 | 1,943 |
| 4 | February 9, 2023 08:45 | February 10, 2023 00:30 | 15h 45m | 402 | 2,078 |
| 5 | May 7, 2023 19:15 | May 8, 2023 01:45 | 6h 30m | 400 | 741 |
| 6 | March 29, 2023 15:30 | March 29, 2023 19:15 | 3h 45m | 350 | 240 |
| 7 | March 30, 2023 18:15 | March 30, 2023 18:45 | 30m | 346 | 173 |
| 8 | July 1, 2023 23:00 | July 2, 2023 18:30 | 19h 30m | 342 | 1,962 |
| 9 | July 27, 2023 13:15 | July 27, 2023 14:15 | 1h | 342 | 262 |
| 10 | December 5, 2023 23:15 | December 6, 2023 00:15 | 1h | 342 | 298 |
Outage episodes by size in 2023: 13 reached 100+ customers, 3 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 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 |
| Egyptian Electric Coop Assn | 2023 | 4.4 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 2023; 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, 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/union-county