County annual report · FIPS 17075
2021 Iroquois County, IL Power Outage Report
In 2021, customers in Iroquois County, IL went without power for an average of 4.6 hours, a total of 46K customer-hours (Illinois average 2.3 hours). That ranks 26th worst of 102 Illinois counties and 1429th 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 Iroquois 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 | March 28, 2021 14:45 | March 29, 2021 02:45 | 12h | 2,606 | 6,075 |
| 2 | June 20, 2021 00:00 | June 21, 2021 14:45 | 1d 14h | 2,337 | 3,969 |
| 3 | June 19, 2021 10:15 | June 19, 2021 12:45 | 2h 30m | 1,992 | 2,399 |
| 4 | January 1, 2021 16:00 | January 3, 2021 21:00 | 2d 5h | 1,862 | 5,910 |
| 5 | January 26, 2021 02:15 | January 26, 2021 12:30 | 10h 15m | 1,199 | 3,912 |
| 6 | October 25, 2021 00:00 | October 25, 2021 07:00 | 7h | 1,050 | 1,815 |
| 7 | February 7, 2021 09:15 | February 8, 2021 02:00 | 16h 45m | 664 | 894 |
| 8 | June 8, 2021 14:45 | June 8, 2021 17:15 | 2h 30m | 558 | 1,019 |
| 9 | March 15, 2021 17:15 | March 16, 2021 01:30 | 8h 15m | 504 | 1,486 |
| 10 | July 23, 2021 23:30 | July 26, 2021 14:15 | 2d 14h | 500 | 1,866 |
Outage episodes by size in 2021: 28 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 Iroquois 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 |
| Eastern Illinois Elec Coop | 2021 | 5.1 hrs | 2.37 | 2.2 hrs | 1.25 |
| Ameren | - | - | - | - | - |
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 ÷ 10,038 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. Iroquois County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Iroquois 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/iroquois-county