County annual report · FIPS 17099
2024 LaSalle County, IL Power Outage Report
In 2024, customers in LaSalle County, IL went without power for an average of 3.0 hours, a total of 188K customer-hours (Illinois average 3.0 hours). That ranks 60th worst of 102 Illinois counties and 2107th 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 LaSalle 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 | October 25, 2024 05:30 | October 25, 2024 11:15 | 5h 45m | 7,019 | 5,174 |
| 2 | July 13, 2024 18:15 | July 19, 2024 23:15 | 6d 5h | 4,911 | 99K |
| 3 | May 20, 2024 15:00 | May 20, 2024 23:30 | 8h 30m | 3,929 | 4,299 |
| 4 | April 16, 2024 03:15 | April 16, 2024 15:15 | 12h | 2,321 | 4,158 |
| 5 | March 25, 2024 17:00 | March 26, 2024 01:15 | 8h 15m | 2,088 | 5,224 |
| 6 | May 1, 2024 23:00 | May 2, 2024 02:15 | 3h 15m | 2,059 | 4,634 |
| 7 | August 28, 2024 01:45 | August 29, 2024 03:15 | 1d 1h | 1,084 | 6,006 |
| 8 | May 21, 2024 19:15 | May 22, 2024 23:00 | 1d 3h | 1,035 | 4,604 |
| 9 | April 16, 2024 18:45 | April 16, 2024 22:45 | 4h | 966 | 882 |
| 10 | May 27, 2024 22:30 | May 28, 2024 08:00 | 9h 30m | 948 | 1,446 |
Outage episodes by size in 2024: 77 reached 100+ customers, 8 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 LaSalle 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 |
| Commonwealth Edison Co | 2024 | 2.2 hrs | 0.68 | 36 min | 0.49 |
| Corn Belt Energy Corporation | 2024 | 5.2 hrs | 5.21 | 2.5 hrs | 4.68 |
| Ameren | - | - | - | - | - |
| City of Oglesby - (IL) | - | - | - | - | - |
| City of Peru - (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 ÷ 63,017 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. LaSalle County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), LaSalle 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/lasalle-county