County annual report · FIPS 17065
2023 Hamilton County, IL Power Outage Report
In 2023, customers in Hamilton County, IL went without power for an average of 1.5 hours, a total of 7,059 customer-hours (Illinois average 4.0 hours). That ranks 88th worst of 102 Illinois counties and 2480th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Hamilton County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 5, 2023 18:45 | April 6, 2023 13:45 | 19h | 2,205 | 608 |
| 2 | August 22, 2023 00:30 | August 22, 2023 01:15 | 45m | 303 | 223 |
| 3 | April 16, 2023 01:15 | April 16, 2023 05:15 | 4h | 273 | 578 |
| 4 | April 20, 2023 19:15 | April 20, 2023 19:45 | 30m | 273 | 75 |
| 5 | August 15, 2023 13:45 | August 15, 2023 21:30 | 7h 45m | 195 | 502 |
| 6 | July 29, 2023 23:15 | July 31, 2023 20:00 | 1d 20h | 170 | 824 |
| 7 | July 21, 2023 14:15 | July 21, 2023 15:00 | 45m | 121 | 91 |
| 8 | April 1, 2023 03:45 | April 1, 2023 05:30 | 1h 45m | 94 | 165 |
| 9 | January 26, 2023 15:30 | January 26, 2023 17:00 | 1h 30m | 93 | 101 |
| 10 | July 29, 2023 00:30 | July 29, 2023 02:45 | 2h 15m | 90 | 134 |
Outage episodes by size in 2023: 7 reached 100+ customers, 1 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 Hamilton County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| Southeastern IL Elec Coop, Inc | 2023 | 3.4 hrs | 1.80 | 2.3 hrs | 1.37 |
| Tri-County Electric Coop, Inc (IL) | 2023 | 4.3 hrs | 1.91 | 52 min | 0.52 |
| Wayne-White Counties Elec Coop | - | - | - | - | - |
| City of McLeansboro - (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 n/a of Illinois's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,619 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. Hamilton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hamilton County, IL annual power outage report, 2023, 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/2023/illinois/hamilton-county