County annual report · FIPS 17023
2024 Clark County, IL Power Outage Report
In 2024, customers in Clark County, IL went without power for an average of 7.9 hours, a total of 62K customer-hours (Illinois average 3.0 hours). That ranks 15th worst of 102 Illinois counties and 1145th 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 Clark 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 | December 29, 2024 03:45 | December 29, 2024 06:45 | 3h | 1,415 | 2,305 |
| 2 | June 25, 2024 18:30 | June 28, 2024 23:15 | 3d 4h | 1,289 | 32K |
| 3 | September 27, 2024 22:00 | September 29, 2024 05:15 | 1d 7h | 1,119 | 10K |
| 4 | August 27, 2024 14:15 | August 27, 2024 16:00 | 1h 45m | 832 | 1,245 |
| 5 | October 13, 2024 15:15 | October 13, 2024 17:15 | 2h | 824 | 1,479 |
| 6 | November 21, 2024 21:15 | November 21, 2024 23:00 | 1h 45m | 805 | 1,326 |
| 7 | March 18, 2024 15:45 | March 18, 2024 17:15 | 1h 30m | 683 | 733 |
| 8 | March 26, 2024 15:00 | March 26, 2024 16:45 | 1h 45m | 544 | 512 |
| 9 | April 9, 2024 18:30 | April 9, 2024 19:00 | 30m | 366 | 183 |
| 10 | April 20, 2024 13:00 | April 20, 2024 16:30 | 3h 30m | 347 | 700 |
Outage episodes by size in 2024: 24 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 Clark 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 |
| Ameren | - | - | - | - | - |
| Norris Electric Coop | - | - | - | - | - |
| Coles-Moultrie Electric Coop | - | - | - | - | - |
| Enerstar Power Corp | - | - | - | - | - |
| City of Casey - (IL) | - | - | - | - | - |
| City of Marshall - (IL) | - | - | - | - | - |
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 ÷ 7,829 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. Clark County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clark 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/clark-county