County annual report · FIPS 17063
2019 Grundy County, IL Power Outage Report
In 2019, customers in Grundy County, IL went without power for an average of 1.6 hours, a total of 69K customer-hours (Illinois average 1.8 hours). That ranks 77th worst of 102 Illinois counties and 2247th of 2,945 nationally.
Compared with IL, the US and 2018
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Grundy County, 2019
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 27, 2019 19:00 | September 29, 2019 00:30 | 1d 5h | 3,164 | 13K |
| 2 | August 13, 2019 15:00 | August 14, 2019 08:00 | 17h | 2,035 | 1,453 |
| 3 | December 10, 2019 17:00 | December 10, 2019 18:30 | 1h 30m | 1,662 | 1,449 |
| 4 | December 11, 2019 15:15 | December 11, 2019 15:45 | 30m | 1,662 | 831 |
| 5 | June 30, 2019 20:15 | July 2, 2019 03:30 | 1d 7h | 1,306 | 13K |
| 6 | November 27, 2019 11:00 | November 28, 2019 17:00 | 1d 6h | 1,161 | 4,179 |
| 7 | August 19, 2019 10:00 | August 19, 2019 23:30 | 13h 30m | 666 | 1,416 |
| 8 | March 14, 2019 19:00 | March 15, 2019 02:30 | 7h 30m | 638 | 1,485 |
| 9 | October 31, 2019 20:30 | November 1, 2019 04:00 | 7h 30m | 588 | 922 |
| 10 | May 18, 2019 19:00 | May 19, 2019 03:30 | 8h 30m | 561 | 931 |
Outage episodes by size in 2019: 43 reached 100+ customers, 6 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 2019, 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 | 2018 | 2.0 hrs | 0.82 | 58 min | 0.70 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Illinois's customers in 2019; 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, 2019, 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/2019/illinois/grundy-county