County annual report · FIPS 17183
2021 Vermilion County, IL Power Outage Report
In 2021, customers in Vermilion County, IL went without power for an average of 1.9 hours, a total of 87K customer-hours (Illinois average 2.3 hours). That ranks 73rd worst of 102 Illinois counties and 2280th 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 Vermilion 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 | May 6, 2021 20:00 | May 7, 2021 01:15 | 5h 15m | 5,360 | 8,031 |
| 2 | June 28, 2021 20:15 | June 29, 2021 07:15 | 11h | 4,675 | 9,985 |
| 3 | June 26, 2021 16:00 | June 27, 2021 10:45 | 18h 45m | 3,543 | 2,487 |
| 4 | June 27, 2021 12:00 | June 27, 2021 12:30 | 30m | 3,483 | 1,742 |
| 5 | June 3, 2021 12:30 | June 3, 2021 22:30 | 10h | 1,669 | 1,313 |
| 6 | December 11, 2021 03:45 | December 12, 2021 20:00 | 1d 16h | 1,610 | 6,936 |
| 7 | March 24, 2021 06:00 | March 24, 2021 07:30 | 1h 30m | 1,354 | 679 |
| 8 | July 8, 2021 07:30 | July 8, 2021 20:45 | 13h 15m | 965 | 3,290 |
| 9 | September 28, 2021 21:15 | September 29, 2021 02:15 | 5h | 910 | 1,282 |
| 10 | January 4, 2021 05:00 | January 4, 2021 06:00 | 1h | 898 | 568 |
Outage episodes by size in 2021: 52 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 Vermilion 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 | - | - | - | - | - |
| Enerstar Power Corp | - | - | - | - | - |
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 ÷ 46,373 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. Vermilion County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Vermilion 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/vermilion-county