County annual report · FIPS 17073
2021 Henry County, IL Power Outage Report
In 2021, customers in Henry County, IL went without power for an average of 2.1 hours, a total of 86K customer-hours (Illinois average 2.3 hours). That ranks 62nd worst of 102 Illinois counties and 2183rd 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 Henry 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 14, 2021 19:30 | July 15, 2021 04:45 | 9h 15m | 2,456 | 11K |
| 2 | January 5, 2021 15:00 | January 6, 2021 03:30 | 12h 30m | 1,827 | 7,158 |
| 3 | March 15, 2021 15:00 | March 17, 2021 01:15 | 1d 10h | 1,753 | 4,637 |
| 4 | July 7, 2021 08:15 | July 7, 2021 19:15 | 11h | 1,696 | 5,855 |
| 5 | June 25, 2021 06:15 | June 25, 2021 19:45 | 13h 30m | 1,510 | 1,687 |
| 6 | August 30, 2021 15:15 | August 30, 2021 21:30 | 6h 15m | 1,510 | 1,926 |
| 7 | May 11, 2021 06:00 | May 11, 2021 09:30 | 3h 30m | 1,448 | 5,068 |
| 8 | June 11, 2021 05:30 | June 11, 2021 10:15 | 4h 45m | 1,236 | 5,871 |
| 9 | February 12, 2021 12:15 | February 12, 2021 16:30 | 4h 15m | 1,231 | 3,873 |
| 10 | January 3, 2021 15:30 | January 5, 2021 13:00 | 1d 21h | 1,228 | 4,454 |
Outage episodes by size in 2021: 35 reached 100+ customers, 14 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 Henry 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 |
| MidAmerican Energy Co | 2021 | 1.9 hrs | 1.04 | 75 min | 0.74 |
| 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 |
| Jo-Carroll Energy, Inc | 2021 | 66 min | 0.51 | 37 min | 0.41 |
| Ameren | - | - | - | - | - |
| City of Geneseo - (IL) | - | - | - | - | - |
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 ÷ 40,978 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. Henry County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Henry 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/henry-county