County annual report · FIPS 17135
2017 Montgomery County, IL Power Outage Report
In 2017, customers in Montgomery County, IL went without power for an average of 1.2 hours, a total of 12K customer-hours (Illinois average 1.4 hours). That ranks 46th worst of 102 Illinois counties and 1969th 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 Montgomery 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 | April 6, 2017 01:30 | April 6, 2017 06:00 | 4h 30m | 1,098 | 3,295 |
| 2 | March 7, 2017 04:45 | March 7, 2017 19:30 | 14h 45m | 701 | 2,551 |
| 3 | January 10, 2017 13:45 | January 10, 2017 20:30 | 6h 45m | 611 | 738 |
| 4 | January 10, 2017 23:15 | January 11, 2017 01:30 | 2h 15m | 565 | 144 |
| 5 | March 1, 2017 08:00 | March 1, 2017 10:00 | 2h | 451 | 814 |
| 6 | May 4, 2017 16:15 | May 5, 2017 01:00 | 8h 45m | 431 | 729 |
| 7 | April 29, 2017 07:15 | April 29, 2017 08:30 | 1h 15m | 374 | 375 |
| 8 | December 27, 2017 02:15 | December 27, 2017 07:00 | 4h 45m | 300 | 430 |
| 9 | April 6, 2017 10:15 | April 6, 2017 13:15 | 3h | 219 | 339 |
| 10 | March 29, 2017 18:30 | March 29, 2017 19:00 | 30m | 196 | 98 |
Outage episodes by size in 2017: 12 reached 100+ customers, 1 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 Montgomery 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 |
| Southwestern Electric Coop Inc - (IL) | 2017 | 4.6 hrs | 1.54 | 4.6 hrs | 1.54 |
| Rural Electric Conven Coop | 2017 | 2.8 hrs | 1.74 | 1.6 hrs | 1.08 |
| Ameren | - | - | - | - | - |
| Shelby Electric Coop, Inc | - | - | - | - | - |
| M J M Electric Cooperative Inc | - | - | - | - | - |
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 ÷ 10,344 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. Montgomery County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Montgomery 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/montgomery-county