County annual report · FIPS 17063
2024 Grundy County, IL Power Outage Report
In 2024, customers in Grundy County, IL went without power for an average of 4.7 hours, a total of 205K customer-hours (Illinois average 3.0 hours). That ranks 33rd worst of 102 Illinois counties and 1679th 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 Grundy 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 | July 15, 2024 23:15 | July 20, 2024 11:00 | 4d 11h | 7,748 | 183K |
| 2 | March 12, 2024 15:15 | March 12, 2024 19:00 | 3h 45m | 1,190 | 427 |
| 3 | January 12, 2024 13:30 | January 13, 2024 02:45 | 13h 15m | 1,084 | 2,660 |
| 4 | September 27, 2024 17:45 | September 28, 2024 07:15 | 13h 30m | 739 | 662 |
| 5 | October 19, 2024 15:45 | October 19, 2024 16:15 | 30m | 616 | 307 |
| 6 | March 3, 2024 18:30 | March 4, 2024 07:15 | 12h 45m | 536 | 718 |
| 7 | March 14, 2024 10:00 | March 14, 2024 15:15 | 5h 15m | 535 | 574 |
| 8 | January 28, 2024 01:00 | January 28, 2024 03:00 | 2h | 533 | 140 |
| 9 | June 17, 2024 13:30 | June 17, 2024 22:15 | 8h 45m | 515 | 834 |
| 10 | June 25, 2024 05:45 | June 25, 2024 22:30 | 16h 45m | 481 | 1,191 |
Outage episodes by size in 2024: 23 reached 100+ customers, 3 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 Grundy 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 ÷ 43,433 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. Grundy County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grundy 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/grundy-county