County annual report · FIPS 17097
2024 Lake County, IL Power Outage Report
In 2024, customers in Lake County, IL went without power for an average of 1.1 hours, a total of 630K customer-hours (Illinois average 3.0 hours). That ranks 93rd worst of 102 Illinois counties and 2708th 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 Lake 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 | August 27, 2024 23:30 | August 31, 2024 01:45 | 3d 2h | 23,670 | 234K |
| 2 | January 12, 2024 12:45 | January 15, 2024 10:15 | 2d 21h | 11,014 | 60K |
| 3 | June 23, 2024 02:00 | June 24, 2024 10:15 | 1d 8h | 8,958 | 126K |
| 4 | May 21, 2024 12:15 | May 23, 2024 16:45 | 2d 4h | 3,577 | 27K |
| 5 | February 28, 2024 02:00 | February 29, 2024 02:15 | 1d | 3,180 | 4,867 |
| 6 | June 25, 2024 12:00 | June 27, 2024 04:00 | 1d 16h | 2,313 | 8,314 |
| 7 | June 17, 2024 16:45 | June 18, 2024 08:00 | 15h 15m | 2,263 | 1,460 |
| 8 | July 13, 2024 23:30 | July 18, 2024 04:15 | 4d 4h | 2,201 | 45K |
| 9 | January 23, 2024 12:30 | January 23, 2024 20:15 | 7h 45m | 2,004 | 780 |
| 10 | October 31, 2024 11:45 | November 1, 2024 10:15 | 22h 30m | 1,702 | 6,254 |
Outage episodes by size in 2024: 193 reached 100+ customers, 16 reached 1,000+ customers, 2 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 Lake 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 |
|---|---|---|---|---|---|
| Commonwealth Edison Co | 2024 | 2.2 hrs | 0.68 | 36 min | 0.49 |
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 ÷ 581,008 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. Lake County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lake 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/lake-county