County annual report · FIPS 17121
2020 Marion County, IL Power Outage Report
In 2020, customers in Marion County, IL went without power for an average of 3.9 hours, a total of 60K customer-hours (Illinois average 5.9 hours). That ranks 45th worst of 102 Illinois counties and 1623rd 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 Marion 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 | June 3, 2020 17:45 | June 3, 2020 20:45 | 3h | 3,500 | 1,368 |
| 2 | January 10, 2020 05:30 | January 10, 2020 10:30 | 5h | 2,010 | 4,454 |
| 3 | March 24, 2020 14:15 | March 24, 2020 18:00 | 3h 45m | 1,930 | 3,849 |
| 4 | November 15, 2020 10:00 | November 16, 2020 01:15 | 15h 15m | 1,633 | 6,989 |
| 5 | August 10, 2020 23:15 | August 12, 2020 02:45 | 1d 3h | 1,564 | 8,169 |
| 6 | December 1, 2020 23:30 | December 2, 2020 02:45 | 3h 15m | 1,481 | 2,071 |
| 7 | August 12, 2020 19:00 | August 13, 2020 06:15 | 11h 15m | 1,181 | 662 |
| 8 | September 28, 2020 05:30 | September 28, 2020 15:00 | 9h 30m | 1,080 | 2,217 |
| 9 | March 6, 2020 08:45 | March 6, 2020 16:00 | 7h 15m | 993 | 3,894 |
| 10 | July 19, 2020 12:30 | July 20, 2020 12:30 | 1d | 771 | 2,858 |
Outage episodes by size in 2020: 33 reached 100+ customers, 8 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 Marion 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 |
| Tri-County Electric Coop, Inc (IL) | 2020 | 2.7 hrs | 1.14 | 83 min | 0.85 |
| Ameren | - | - | - | - | - |
| Wayne-White Counties Elec Coop | - | - | - | - | - |
| Clay Electric Coop Inc | - | - | - | - | - |
| Clinton County Elec Coop, Inc | - | - | - | - | - |
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 ÷ 15,234 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. Marion County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marion 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/marion-county