County annual report · FIPS 17123
2020 Marshall County, IL Power Outage Report
In 2020, customers in Marshall County, IL went without power for an average of 11.3 hours, a total of 90K customer-hours (Illinois average 5.9 hours). That ranks 12th worst of 102 Illinois counties and 703rd 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 Marshall 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 | November 10, 2020 11:00 | November 10, 2020 13:00 | 2h | 1,660 | 2,075 |
| 2 | August 10, 2020 19:45 | August 16, 2020 03:45 | 5d 8h | 1,342 | 52K |
| 3 | July 12, 2020 01:45 | July 14, 2020 03:15 | 2d 1h | 1,016 | 14K |
| 4 | June 9, 2020 17:15 | June 10, 2020 03:45 | 10h 30m | 897 | 2,323 |
| 5 | July 7, 2020 20:15 | July 8, 2020 00:00 | 3h 45m | 793 | 748 |
| 6 | July 25, 2020 06:30 | July 25, 2020 13:30 | 7h | 791 | 1,887 |
| 7 | November 10, 2020 21:45 | November 12, 2020 00:00 | 1d 2h | 407 | 1,962 |
| 8 | July 19, 2020 11:15 | July 20, 2020 00:00 | 12h 45m | 378 | 1,484 |
| 9 | September 24, 2020 15:45 | September 24, 2020 18:30 | 2h 45m | 340 | 179 |
| 10 | June 27, 2020 01:30 | June 27, 2020 16:45 | 15h 15m | 301 | 1,439 |
Outage episodes by size in 2020: 17 reached 100+ customers, 3 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 Marshall 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 |
| Commonwealth Edison Co | 2020 | 5.7 hrs | 0.83 | 40 min | 0.55 |
| Corn Belt Energy Corporation | 2020 | 5.2 hrs | 4.46 | 2.8 hrs | 3.97 |
| Ameren | - | - | - | - | - |
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 ÷ 7,906 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. Marshall County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marshall 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/marshall-county