County annual report · FIPS 17093
2021 Kendall County, IL Power Outage Report
In 2021, customers in Kendall County, IL went without power for an average of 0.9 hours, a total of 81K customer-hours (Illinois average 2.3 hours). That ranks 98th worst of 102 Illinois counties and 2709th 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 Kendall 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 | August 10, 2021 21:15 | August 13, 2021 17:45 | 2d 20h | 4,940 | 37K |
| 2 | August 21, 2021 02:00 | August 21, 2021 10:30 | 8h 30m | 2,105 | 1,477 |
| 3 | November 25, 2021 23:15 | November 26, 2021 04:00 | 4h 45m | 1,565 | 536 |
| 4 | August 24, 2021 15:45 | August 25, 2021 14:30 | 22h 45m | 1,470 | 5,022 |
| 5 | June 21, 2021 04:30 | June 21, 2021 22:30 | 18h | 1,447 | 1,973 |
| 6 | April 8, 2021 17:45 | April 9, 2021 01:15 | 7h 30m | 1,371 | 919 |
| 7 | August 22, 2021 19:00 | August 23, 2021 09:00 | 14h | 1,364 | 1,493 |
| 8 | June 25, 2021 13:00 | June 25, 2021 15:15 | 2h 15m | 945 | 1,420 |
| 9 | June 8, 2021 14:30 | June 8, 2021 16:30 | 2h | 914 | 235 |
| 10 | February 4, 2021 23:45 | February 5, 2021 00:00 | 15m | 840 | 210 |
Outage episodes by size in 2021: 40 reached 100+ customers, 7 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 Kendall 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 |
|---|---|---|---|---|---|
| Ameren Illinois Company | 2021 | 3.2 hrs | 1.11 | 2.0 hrs | 0.88 |
| Commonwealth Edison Co | 2021 | 1.7 hrs | 0.77 | 43 min | 0.59 |
| Corn Belt Energy Corporation | 2021 | 12.3 hrs | 6.64 | 3.7 hrs | 4.71 |
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 ÷ 92,751 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. Kendall County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Kendall 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/kendall-county