County annual report · FIPS 17013
2018 Calhoun County, IL Power Outage Report
In 2018, customers in Calhoun County, IL went without power for an average of 6.1 hours, a total of 11K customer-hours (Illinois average 2.5 hours). That ranks 16th worst of 102 Illinois counties and 906th of 2,798 nationally.
Compared with IL, the US and 2017
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Calhoun County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 14, 2018 21:00 | June 15, 2018 03:15 | 6h 15m | 928 | 2,331 |
| 2 | June 28, 2018 22:00 | June 29, 2018 15:30 | 17h 30m | 904 | 4,042 |
| 3 | September 16, 2018 06:30 | September 16, 2018 07:15 | 45m | 466 | 350 |
| 4 | July 5, 2018 22:00 | July 6, 2018 13:15 | 15h 15m | 391 | 1,440 |
| 5 | January 8, 2018 01:45 | January 8, 2018 04:00 | 2h 15m | 279 | 520 |
| 6 | February 21, 2018 01:00 | February 21, 2018 05:15 | 4h 15m | 234 | 937 |
| 7 | February 20, 2018 18:30 | February 20, 2018 21:15 | 2h 45m | 137 | 194 |
| 8 | April 14, 2018 06:30 | April 14, 2018 10:30 | 4h | 74 | 278 |
| 9 | August 7, 2018 07:45 | August 7, 2018 15:00 | 7h 15m | 73 | 224 |
| 10 | March 24, 2018 10:45 | March 24, 2018 17:45 | 7h | 45 | 213 |
Outage episodes by size in 2018: 7 reached 100+ customers, 0 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 Calhoun County reported on EIA Form 861 for 2018, 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 | 2018 | 3.5 hrs | 1.06 | 1.8 hrs | 0.90 |
| Illinois Rural Electric 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 92% of Illinois's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,865 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. Calhoun County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Calhoun County, IL annual power outage report, 2018, 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/2018/illinois/calhoun-county