County annual report · FIPS 17197
2025 Will County, IL Power Outage Report
In 2025, customers in Will County, IL went without power for an average of 1.8 hours, a total of 548K customer-hours (Illinois average 2.5 hours). That ranks 78th worst of 102 Illinois counties and 2486th of 3,000 nationally.
Compared with IL, the US and 2024
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Will County, 2025
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 16, 2025 19:15 | August 20, 2025 09:15 | 3d 14h | 14,999 | 196K |
| 2 | May 15, 2025 19:00 | May 18, 2025 06:15 | 2d 11h | 12,800 | 136K |
| 3 | July 24, 2025 03:45 | July 27, 2025 00:45 | 2d 21h | 6,370 | 42K |
| 4 | May 11, 2025 17:30 | May 12, 2025 09:15 | 15h 45m | 5,970 | 6,380 |
| 5 | March 19, 2025 13:30 | March 20, 2025 20:30 | 1d 7h | 2,205 | 7,594 |
| 6 | May 20, 2025 04:15 | May 21, 2025 04:15 | 1d | 1,966 | 6,492 |
| 7 | July 27, 2025 07:30 | July 28, 2025 05:00 | 21h 30m | 1,759 | 3,068 |
| 8 | March 14, 2025 14:30 | March 15, 2025 01:15 | 10h 45m | 1,377 | 1,189 |
| 9 | November 26, 2025 08:00 | November 27, 2025 07:00 | 23h | 1,360 | 4,704 |
| 10 | June 4, 2025 14:15 | June 5, 2025 08:15 | 18h | 1,356 | 1,520 |
Outage episodes by size in 2025: 186 reached 100+ customers, 19 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 Will County reported on EIA Form 861 for 2025, 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 |
| Northern Indiana Pub Serv Co | 2024 | 8.9 hrs | 1.34 | 2.8 hrs | 0.97 |
| City of Naperville - (IL) | 2024 | 25 min | 0.50 | - | - |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 299,468 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. Will County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Will County, IL annual power outage report, 2025, 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/2025/illinois/will-county