County annual report · FIPS 17063
2022 Grundy County, IL Power Outage Report
In 2022, customers in Grundy County, IL went without power for an average of 0.5 hours, a total of 22K customer-hours (Illinois average 1.6 hours). That ranks 98th worst of 102 Illinois counties and 2837th of 2,976 nationally.
Compared with IL, the US and 2021
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Grundy County, 2022
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 17, 2022 04:15 | February 17, 2022 19:00 | 14h 45m | 858 | 1,141 |
| 2 | November 19, 2022 06:00 | November 19, 2022 06:15 | 15m | 719 | 180 |
| 3 | November 5, 2022 10:00 | November 6, 2022 14:45 | 1d 4h | 498 | 1,607 |
| 4 | December 23, 2022 05:45 | December 24, 2022 07:45 | 1d 2h | 463 | 2,508 |
| 5 | March 25, 2022 23:45 | March 26, 2022 09:00 | 9h 15m | 457 | 419 |
| 6 | June 15, 2022 21:15 | June 15, 2022 23:45 | 2h 30m | 415 | 420 |
| 7 | May 27, 2022 16:00 | May 27, 2022 17:00 | 1h | 393 | 118 |
| 8 | February 21, 2022 14:00 | February 21, 2022 15:30 | 1h 30m | 358 | 101 |
| 9 | January 15, 2022 12:00 | January 15, 2022 15:45 | 3h 45m | 337 | 416 |
| 10 | October 24, 2022 08:15 | October 24, 2022 09:15 | 1h | 278 | 224 |
Outage episodes by size in 2022: 21 reached 100+ customers, 0 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 2022, 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 | 2022 | 66 min | 0.63 | 38 min | 0.52 |
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 2022; 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, 2022, 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/2022/illinois/grundy-county