County annual report · FIPS 17135
2016 Montgomery County, IL Power Outage Report
In 2016, customers in Montgomery County, IL went without power for an average of 3.6 hours, a total of 37K customer-hours (Illinois average 1.5 hours). That ranks 26th worst of 100 Illinois counties and 869th of 2,391 nationally.
Compared with IL, the US and 2015
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Montgomery County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 24, 2016 09:00 | February 25, 2016 04:45 | 19h 45m | 2,218 | 11K |
| 2 | April 2, 2016 18:30 | April 3, 2016 01:15 | 6h 45m | 1,543 | 1,223 |
| 3 | July 22, 2016 18:45 | July 23, 2016 00:45 | 6h | 1,521 | 670 |
| 4 | May 7, 2016 22:00 | May 9, 2016 02:00 | 1d 4h | 1,498 | 7,190 |
| 5 | May 22, 2016 14:15 | May 22, 2016 21:15 | 7h | 823 | 2,414 |
| 6 | July 13, 2016 21:30 | July 16, 2016 01:00 | 2d 3h | 793 | 6,052 |
| 7 | July 25, 2016 05:30 | July 25, 2016 19:15 | 13h 45m | 409 | 1,232 |
| 8 | April 5, 2016 21:15 | April 5, 2016 23:30 | 2h 15m | 271 | 339 |
| 9 | May 26, 2016 13:15 | May 26, 2016 15:00 | 1h 45m | 263 | 266 |
| 10 | April 26, 2016 20:30 | April 26, 2016 22:30 | 2h | 245 | 368 |
Outage episodes by size in 2016: 17 reached 100+ customers, 4 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 2016, 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 | 2016 | 4.0 hrs | 1.36 | 2.1 hrs | 1.04 |
| Southwestern Electric Coop Inc - (IL) | 2016 | 6.4 hrs | 1.72 | 84 min | 0.86 |
| Rural Electric Conven Coop | 2016 | 5.5 hrs | 2.29 | 1.6 hrs | 1.21 |
| 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 2016; 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, 2016, 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/2016/illinois/montgomery-county