County annual report · FIPS 17063
2017 Grundy County, IL Power Outage Report
In 2017, customers in Grundy County, IL went without power for an average of 0.8 hours, a total of 37K customer-hours (Illinois average 1.4 hours). That ranks 63rd worst of 102 Illinois counties and 2117th of 2,786 nationally.
Compared with IL, the US and 2016
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Grundy County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 12, 2017 13:30 | June 12, 2017 16:00 | 2h 30m | 1,532 | 769 |
| 2 | June 28, 2017 21:00 | June 29, 2017 04:30 | 7h 30m | 1,433 | 1,838 |
| 3 | June 14, 2017 16:30 | June 16, 2017 23:30 | 2d 7h | 1,126 | 8,608 |
| 4 | May 28, 2017 12:00 | May 28, 2017 13:00 | 1h | 807 | 807 |
| 5 | July 22, 2017 03:30 | July 23, 2017 01:30 | 22h | 407 | 1,943 |
| 6 | July 20, 2017 03:00 | July 21, 2017 04:00 | 1d 1h | 379 | 1,579 |
| 7 | May 9, 2017 06:30 | May 9, 2017 11:30 | 5h | 378 | 1,134 |
| 8 | June 12, 2017 21:00 | June 13, 2017 12:00 | 15h | 358 | 331 |
| 9 | September 15, 2017 16:00 | September 15, 2017 19:30 | 3h 30m | 345 | 518 |
| 10 | August 28, 2017 20:30 | August 29, 2017 00:30 | 4h | 300 | 456 |
Outage episodes by size in 2017: 33 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 2017, 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 | 2017 | 1.6 hrs | 0.82 | 55 min | 0.66 |
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 2017; 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, 2017, 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/2017/illinois/grundy-county