County annual report · FIPS 17197
2021 Will County, IL Power Outage Report
In 2021, customers in Will County, IL went without power for an average of 1.2 hours, a total of 372K customer-hours (Illinois average 2.3 hours). That ranks 92nd worst of 102 Illinois counties and 2574th of 2,974 nationally.
Compared with IL, the US and 2020
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Will County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 6, 2021 22:30 | September 9, 2021 10:15 | 2d 11h | 8,355 | 45K |
| 2 | June 19, 2021 08:15 | June 20, 2021 05:00 | 20h 45m | 6,200 | 50K |
| 3 | August 10, 2021 11:30 | August 13, 2021 01:45 | 2d 14h | 5,877 | 32K |
| 4 | December 16, 2021 01:00 | December 17, 2021 13:30 | 1d 12h | 3,155 | 11K |
| 5 | August 24, 2021 18:30 | August 27, 2021 09:30 | 2d 15h | 3,055 | 18K |
| 6 | October 24, 2021 18:45 | October 27, 2021 01:00 | 2d 6h | 2,593 | 13K |
| 7 | August 10, 2021 08:15 | August 10, 2021 10:45 | 2h 30m | 2,246 | 1,437 |
| 8 | June 2, 2021 13:00 | June 2, 2021 20:45 | 7h 45m | 2,168 | 2,897 |
| 9 | December 11, 2021 02:15 | December 12, 2021 04:15 | 1d 2h | 1,879 | 8,214 |
| 10 | December 6, 2021 16:45 | December 7, 2021 03:30 | 10h 45m | 1,749 | 1,870 |
Outage episodes by size in 2021: 184 reached 100+ customers, 28 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 Will County reported on EIA Form 861 for 2021, 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 | 2021 | 1.7 hrs | 0.77 | 43 min | 0.59 |
| Northern Indiana Pub Serv Co | 2021 | 8.8 hrs | 1.55 | 2.9 hrs | 1.06 |
| City of Naperville - (IL) | 2021 | 20 min | 0.30 | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Illinois's customers in 2021; 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, 2021, 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/2021/illinois/will-county