County annual report · FIPS 17131
2024 Mercer County, IL Power Outage Report
In 2024, customers in Mercer County, IL went without power for an average of 10.0 hours, a total of 89K customer-hours (Illinois average 3.0 hours). That ranks 11th worst of 102 Illinois counties and 929th 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 Mercer 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 | July 15, 2024 23:00 | July 17, 2024 22:45 | 1d 23h | 2,741 | 35K |
| 2 | December 25, 2024 20:30 | December 25, 2024 23:00 | 2h 30m | 1,626 | 3,762 |
| 3 | April 16, 2024 23:30 | April 17, 2024 17:45 | 18h 15m | 1,250 | 3,105 |
| 4 | March 14, 2024 06:45 | March 14, 2024 19:00 | 12h 15m | 1,029 | 4,685 |
| 5 | May 2, 2024 21:30 | May 3, 2024 21:45 | 1d | 905 | 2,817 |
| 6 | June 23, 2024 04:30 | June 24, 2024 13:00 | 1d 8h | 610 | 3,711 |
| 7 | August 1, 2024 00:00 | August 1, 2024 04:45 | 4h 45m | 568 | 2,698 |
| 8 | December 14, 2024 17:15 | December 15, 2024 07:45 | 14h 30m | 554 | 2,062 |
| 9 | December 4, 2024 22:15 | December 5, 2024 15:00 | 16h 45m | 444 | 2,799 |
| 10 | February 3, 2024 18:45 | February 3, 2024 22:00 | 3h 15m | 399 | 800 |
Outage episodes by size in 2024: 35 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 Mercer 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 |
| MidAmerican Energy Co | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| Ameren | - | - | - | - | - |
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 ÷ 8,972 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. Mercer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mercer 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/mercer-county