County annual report · FIPS 17181
2015 Union County, IL Power Outage Report
In 2015, customers in Union County, IL went without power for an average of 1.2 hours, a total of 12K customer-hours (Illinois average 2.3 hours). That ranks 67th worst of 100 Illinois counties and 1646th of 2,484 nationally.
Compared with IL, the US
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Union County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 25, 2015 02:30 | May 25, 2015 15:15 | 12h 45m | 4,789 | 5,476 |
| 2 | June 19, 2015 21:00 | June 19, 2015 23:00 | 2h | 1,458 | 730 |
| 3 | July 2, 2015 06:30 | July 2, 2015 11:30 | 5h | 891 | 1,618 |
| 4 | July 22, 2015 15:30 | July 22, 2015 18:30 | 3h | 607 | 307 |
| 5 | November 23, 2015 00:30 | November 23, 2015 01:30 | 1h | 606 | 606 |
| 6 | May 19, 2015 12:15 | May 19, 2015 13:00 | 45m | 589 | 162 |
| 7 | July 24, 2015 11:15 | July 24, 2015 13:00 | 1h 45m | 400 | 101 |
| 8 | July 9, 2015 02:30 | July 9, 2015 07:45 | 5h 15m | 291 | 565 |
| 9 | August 21, 2015 15:15 | August 21, 2015 21:00 | 5h 45m | 199 | 120 |
| 10 | December 14, 2015 03:45 | December 14, 2015 11:15 | 7h 30m | 110 | 596 |
Outage episodes by size in 2015: 10 reached 100+ customers, 2 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 2015, 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 | 2015 | 5.9 hrs | 1.39 | 2.2 hrs | 1.04 |
| Ameren | - | - | - | - | - |
| Egyptian Electric Coop Assn | - | - | - | - | - |
| 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 2015; 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, 2015, 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/2015/illinois/union-county