County annual report · FIPS 17113
2021 McLean County, IL Power Outage Report
In 2021, customers in McLean County, IL went without power for an average of 5.5 hours, a total of 449K customer-hours (Illinois average 2.3 hours). That ranks 18th worst of 102 Illinois counties and 1241st 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 McLean 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 | July 23, 2021 21:30 | July 24, 2021 00:30 | 3h | 6,823 | 11K |
| 2 | January 1, 2021 14:00 | January 8, 2021 07:30 | 6d 17h | 5,450 | 277K |
| 3 | October 1, 2021 10:30 | October 1, 2021 21:45 | 11h 15m | 4,160 | 4,747 |
| 4 | December 15, 2021 14:00 | December 17, 2021 02:30 | 1d 12h | 2,523 | 24K |
| 5 | September 20, 2021 15:15 | September 20, 2021 21:30 | 6h 15m | 2,387 | 2,027 |
| 6 | February 1, 2021 10:15 | February 2, 2021 06:45 | 20h 30m | 2,324 | 1,556 |
| 7 | October 11, 2021 20:45 | October 12, 2021 07:30 | 10h 45m | 2,316 | 6,313 |
| 8 | October 24, 2021 11:15 | October 26, 2021 01:00 | 1d 13h | 2,256 | 9,983 |
| 9 | June 26, 2021 01:15 | June 27, 2021 17:15 | 1d 16h | 1,853 | 9,780 |
| 10 | December 30, 2021 14:00 | December 30, 2021 15:15 | 1h 15m | 1,815 | 458 |
Outage episodes by size in 2021: 97 reached 100+ customers, 17 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 McLean 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 |
| Corn Belt Energy Corporation | 2021 | 12.3 hrs | 6.64 | 3.7 hrs | 4.71 |
| 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 ÷ 81,860 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. McLean County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), McLean 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/mclean-county