County annual report · FIPS 17119
2015 Madison County, IL Power Outage Report
In 2015, customers in Madison County, IL went without power for an average of 1.6 hours, a total of 173K customer-hours (Illinois average 2.3 hours). That ranks 61st worst of 100 Illinois counties and 1412th 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 Madison 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 | June 25, 2015 20:30 | June 27, 2015 08:00 | 1d 11h | 12,267 | 29K |
| 2 | October 18, 2015 12:00 | October 18, 2015 17:15 | 5h 15m | 6,750 | 12K |
| 3 | June 10, 2015 10:30 | June 11, 2015 19:30 | 1d 9h | 2,273 | 9,171 |
| 4 | November 19, 2015 14:45 | November 20, 2015 20:30 | 1d 5h | 2,243 | 1,963 |
| 5 | December 27, 2015 16:30 | December 30, 2015 12:45 | 2d 20h | 1,777 | 15K |
| 6 | July 30, 2015 23:00 | July 31, 2015 07:15 | 8h 15m | 1,762 | 7,630 |
| 7 | May 6, 2015 15:30 | May 7, 2015 22:30 | 1d 7h | 1,630 | 1,048 |
| 8 | September 1, 2015 13:15 | September 2, 2015 19:00 | 1d 5h | 1,555 | 518 |
| 9 | August 9, 2015 23:00 | August 10, 2015 23:15 | 1d | 1,524 | 7,105 |
| 10 | April 19, 2015 13:00 | April 19, 2015 16:00 | 3h | 1,463 | 2,130 |
Outage episodes by size in 2015: 70 reached 100+ customers, 17 reached 1,000+ customers, 1 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 Madison 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 |
| Southwestern Electric Coop Inc - (IL) | 2015 | 2.7 hrs | 1.63 | 2.4 hrs | 1.50 |
| Ameren | - | - | - | - | - |
| M J M Electric Cooperative Inc | - | - | - | - | - |
| Clinton County Elec Coop, Inc | - | - | - | - | - |
| City of Highland | - | - | - | - | - |
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 ÷ 107,855 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. Madison County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Madison 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/madison-county