County annual report · FIPS 17119
2020 Madison County, IL Power Outage Report
In 2020, customers in Madison County, IL went without power for an average of 2.7 hours, a total of 291K customer-hours (Illinois average 5.9 hours). That ranks 61st worst of 102 Illinois counties and 1979th of 3,019 nationally.
Compared with IL, the US and 2019
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Madison County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 15, 2020 12:30 | July 17, 2020 10:30 | 1d 22h | 10,333 | 86K |
| 2 | October 19, 2020 14:45 | October 20, 2020 01:15 | 10h 30m | 4,240 | 8,274 |
| 3 | January 18, 2020 01:30 | January 20, 2020 22:15 | 2d 20h | 3,588 | 28K |
| 4 | April 5, 2020 10:15 | April 5, 2020 22:00 | 11h 45m | 3,460 | 8,377 |
| 5 | September 12, 2020 15:00 | September 12, 2020 21:45 | 6h 45m | 2,568 | 2,822 |
| 6 | May 25, 2020 15:15 | May 26, 2020 23:45 | 1d 8h | 2,468 | 17K |
| 7 | May 30, 2020 02:15 | May 30, 2020 10:45 | 8h 30m | 2,286 | 4,701 |
| 8 | November 12, 2020 19:00 | November 13, 2020 02:15 | 7h 15m | 2,228 | 1,228 |
| 9 | August 9, 2020 05:30 | August 12, 2020 00:15 | 2d 18h | 1,765 | 9,306 |
| 10 | July 12, 2020 15:15 | July 12, 2020 20:15 | 5h | 1,680 | 3,706 |
Outage episodes by size in 2020: 99 reached 100+ customers, 16 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 2020, 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 | 2020 | 3.7 hrs | 1.04 | 1.7 hrs | 0.82 |
| Southwestern Electric Coop Inc - (IL) | 2020 | 3.4 hrs | 1.51 | 3.1 hrs | 1.47 |
| 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 94% of Illinois's customers in 2020; 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, 2020, 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/2020/illinois/madison-county