County annual report · FIPS 17067
2021 Hancock County, IL Power Outage Report
In 2021, customers in Hancock County, IL went without power for an average of 2.3 hours, a total of 21K customer-hours (Illinois average 2.3 hours). That ranks 59th worst of 102 Illinois counties and 2126th 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 Hancock 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 | January 25, 2021 23:30 | January 26, 2021 02:30 | 3h | 2,400 | 2,102 |
| 2 | January 1, 2021 14:45 | January 1, 2021 18:45 | 4h | 1,739 | 933 |
| 3 | May 24, 2021 16:45 | May 24, 2021 21:15 | 4h 30m | 1,310 | 1,939 |
| 4 | April 20, 2021 14:30 | April 20, 2021 15:30 | 1h | 937 | 246 |
| 5 | June 23, 2021 14:15 | June 23, 2021 14:45 | 30m | 722 | 361 |
| 6 | March 27, 2021 13:45 | March 29, 2021 14:45 | 2d 1h | 659 | 214 |
| 7 | January 4, 2021 11:15 | January 4, 2021 17:15 | 6h | 631 | 2,134 |
| 8 | July 10, 2021 00:45 | July 10, 2021 13:45 | 13h | 509 | 4,385 |
| 9 | June 9, 2021 23:15 | June 10, 2021 03:00 | 3h 45m | 417 | 1,083 |
| 10 | March 10, 2021 17:45 | March 10, 2021 18:45 | 1h | 317 | 245 |
Outage episodes by size in 2021: 15 reached 100+ customers, 3 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 Hancock 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 |
| Adams Electric Coop | 2018 | 2.2 hrs | 1.12 | 2.2 hrs | 1.12 |
| Ameren | - | - | - | - | - |
| McDonough Power Coop | - | - | - | - | - |
| Western Illinois Elec Coop | - | - | - | - | - |
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 ÷ 9,010 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. Hancock County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hancock 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/hancock-county