County annual report · FIPS 17135
2024 Montgomery County, IL Power Outage Report
In 2024, customers in Montgomery County, IL went without power for an average of 3.1 hours, a total of 32K customer-hours (Illinois average 3.0 hours). That ranks 56th worst of 102 Illinois counties and 2064th of 2,990 nationally.
Compared with IL, the US and 2023
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Montgomery County, 2024
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 3, 2024 19:15 | March 15, 2024 20:45 | 12d 1h | 1,719 | 4,271 |
| 2 | October 25, 2024 05:15 | October 25, 2024 09:00 | 3h 45m | 1,701 | 6,376 |
| 3 | March 31, 2024 12:45 | March 31, 2024 13:45 | 1h | 1,049 | 579 |
| 4 | August 16, 2024 08:00 | August 16, 2024 20:30 | 12h 30m | 554 | 943 |
| 5 | December 2, 2024 19:15 | December 2, 2024 20:15 | 1h | 486 | 486 |
| 6 | April 20, 2024 02:00 | April 20, 2024 02:30 | 30m | 420 | 210 |
| 7 | September 23, 2024 15:15 | September 23, 2024 18:30 | 3h 15m | 351 | 853 |
| 8 | March 27, 2024 13:45 | March 27, 2024 20:00 | 6h 15m | 318 | 537 |
| 9 | October 22, 2024 14:15 | October 22, 2024 15:30 | 1h 15m | 280 | 209 |
| 10 | April 28, 2024 15:45 | April 28, 2024 19:00 | 3h 15m | 262 | 338 |
Outage episodes by size in 2024: 29 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 Montgomery County reported on EIA Form 861 for 2024, 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 | 2024 | 3.7 hrs | 1.13 | 2.0 hrs | 0.91 |
| Southwestern Electric Coop Inc - (IL) | 2024 | 5.1 hrs | 2.21 | 4.4 hrs | 1.78 |
| Rural Electric Conven Coop | 2018 | 4.0 hrs | 1.91 | 2.0 hrs | 1.84 |
| 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 2024; 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, 2024, 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/2024/illinois/montgomery-county