County annual report · FIPS 17099
2019 LaSalle County, IL Power Outage Report
In 2019, customers in LaSalle County, IL went without power for an average of 3.0 hours, a total of 191K customer-hours (Illinois average 1.8 hours). That ranks 42nd worst of 102 Illinois counties and 1635th of 2,945 nationally.
Compared with IL, the US and 2018
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in LaSalle County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 12, 2019 01:00 | February 14, 2019 10:00 | 2d 9h | 3,445 | 46K |
| 2 | July 5, 2019 06:30 | July 5, 2019 19:00 | 12h 30m | 2,225 | 6,828 |
| 3 | June 30, 2019 18:45 | July 4, 2019 01:00 | 3d 6h | 2,180 | 24K |
| 4 | December 4, 2019 17:45 | December 5, 2019 02:45 | 9h | 2,110 | 2,048 |
| 5 | January 23, 2019 02:00 | January 23, 2019 04:30 | 2h 30m | 2,026 | 1,016 |
| 6 | January 17, 2019 16:15 | January 17, 2019 22:00 | 5h 45m | 1,997 | 3,585 |
| 7 | July 16, 2019 23:15 | July 17, 2019 06:15 | 7h | 1,576 | 5,617 |
| 8 | September 27, 2019 16:30 | September 29, 2019 02:30 | 1d 10h | 1,393 | 20K |
| 9 | April 20, 2019 13:45 | April 20, 2019 18:30 | 4h 45m | 1,147 | 1,267 |
| 10 | August 13, 2019 18:00 | August 14, 2019 20:00 | 1d 2h | 1,043 | 1,019 |
Outage episodes by size in 2019: 77 reached 100+ customers, 10 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 2019, 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 | 2018 | 3.5 hrs | 1.06 | 1.8 hrs | 0.90 |
| Commonwealth Edison Co | 2018 | 2.0 hrs | 0.82 | 58 min | 0.70 |
| Corn Belt Energy Corporation | 2018 | 6.9 hrs | 4.02 | 3.3 hrs | 3.75 |
| 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 99% of Illinois's customers in 2019; 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, 2019, 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/2019/illinois/lasalle-county