County annual report · FIPS 17181
2017 Union County, IL Power Outage Report
In 2017, customers in Union County, IL went without power for an average of 0.7 hours, a total of 6,845 customer-hours (Illinois average 1.4 hours). That ranks 76th worst of 102 Illinois counties and 2212th of 2,786 nationally.
Compared with IL, the US and 2016
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Union County, 2017
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 1, 2017 11:00 | March 2, 2017 08:00 | 21h | 379 | 2,599 |
| 2 | November 1, 2017 05:15 | November 1, 2017 11:15 | 6h | 286 | 1,135 |
| 3 | January 14, 2017 10:30 | January 14, 2017 17:30 | 7h | 157 | 555 |
| 4 | November 2, 2017 02:15 | November 2, 2017 10:30 | 8h 15m | 130 | 927 |
| 5 | November 18, 2017 19:30 | November 19, 2017 07:30 | 12h | 121 | 617 |
| 6 | January 10, 2017 17:45 | January 10, 2017 22:00 | 4h 15m | 53 | 193 |
| 7 | April 30, 2017 01:30 | April 30, 2017 03:15 | 1h 45m | 53 | 93 |
| 8 | April 29, 2017 06:30 | April 29, 2017 12:00 | 5h 30m | 47 | 229 |
| 9 | May 10, 2017 21:30 | May 11, 2017 06:00 | 8h 30m | 26 | 172 |
| 10 | April 25, 2017 12:30 | April 25, 2017 14:15 | 1h 45m | 19 | 29 |
Outage episodes by size in 2017: 5 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 Union County reported on EIA Form 861 for 2017, 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 | 2017 | 3.2 hrs | 1.12 | 2.0 hrs | 0.90 |
| 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 2017; 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, 2017, 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/2017/illinois/union-county