County annual report · FIPS 17013
2015 Calhoun County, IL Power Outage Report
In 2015, customers in Calhoun County, IL went without power for an average of 15.3 hours, a total of 29K customer-hours (Illinois average 2.3 hours). That ranks 6th worst of 100 Illinois counties and 163rd of 2,484 nationally.
Compared with IL, the US
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Calhoun County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 23, 2015 12:00 | December 23, 2015 21:00 | 9h | 1,391 | 1,170 |
| 2 | November 21, 2015 16:00 | November 21, 2015 20:45 | 4h 45m | 1,076 | 1,655 |
| 3 | November 27, 2015 20:15 | November 27, 2015 22:15 | 2h | 925 | 1,624 |
| 4 | June 17, 2015 14:30 | June 17, 2015 15:45 | 1h 15m | 319 | 334 |
| 5 | June 19, 2015 12:15 | June 19, 2015 16:30 | 4h 15m | 319 | 288 |
| 6 | July 7, 2015 03:15 | July 19, 2015 01:45 | 11d 22h | 297 | 3,754 |
| 7 | July 19, 2015 03:00 | August 4, 2015 17:45 | 16d 14h | 297 | 4,847 |
| 8 | June 21, 2015 07:15 | June 21, 2015 17:30 | 10h 15m | 290 | 770 |
| 9 | December 28, 2015 18:00 | December 29, 2015 04:00 | 10h | 251 | 881 |
| 10 | June 8, 2015 18:45 | June 8, 2015 21:30 | 2h 45m | 172 | 143 |
Outage episodes by size in 2015: 10 reached 100+ customers, 2 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 2015, 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 | 2015 | 5.9 hrs | 1.39 | 2.2 hrs | 1.04 |
| 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 n/a of Illinois's customers in 2015; 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, 2015, 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/2015/illinois/calhoun-county