County annual report · FIPS 17121
2024 Marion County, IL Power Outage Report
In 2024, customers in Marion County, IL went without power for an average of 11.1 hours, a total of 170K customer-hours (Illinois average 3.0 hours). That ranks 9th worst of 102 Illinois counties and 845th 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 Marion 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 | May 26, 2024 22:00 | May 30, 2024 03:30 | 3d 5h | 8,513 | 89K |
| 2 | April 2, 2024 07:00 | April 2, 2024 17:00 | 10h | 8,052 | 16K |
| 3 | August 1, 2024 19:00 | August 2, 2024 02:30 | 7h 30m | 6,595 | 11K |
| 4 | January 4, 2024 15:45 | January 4, 2024 18:15 | 2h 30m | 3,044 | 2,289 |
| 5 | July 30, 2024 02:15 | July 31, 2024 00:15 | 22h | 2,648 | 19K |
| 6 | September 27, 2024 12:15 | September 28, 2024 00:30 | 12h 15m | 957 | 3,095 |
| 7 | April 8, 2024 05:30 | April 8, 2024 17:15 | 11h 45m | 737 | 1,579 |
| 8 | July 16, 2024 10:00 | July 17, 2024 16:45 | 1d 6h | 718 | 1,507 |
| 9 | December 19, 2024 16:15 | December 19, 2024 18:00 | 1h 45m | 710 | 179 |
| 10 | January 14, 2024 07:15 | January 14, 2024 10:15 | 3h | 615 | 1,844 |
Outage episodes by size in 2024: 35 reached 100+ customers, 5 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 Marion 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 |
| Tri-County Electric Coop, Inc (IL) | 2024 | 6.2 hrs | 2.50 | 64 min | 0.73 |
| Ameren | - | - | - | - | - |
| Wayne-White Counties Elec Coop | - | - | - | - | - |
| Clay Electric Coop Inc | - | - | - | - | - |
| Clinton County Elec Coop, 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 ÷ 15,234 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. Marion County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marion 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/marion-county