County annual report · FIPS 17123
2023 Marshall County, IL Power Outage Report
In 2023, customers in Marshall County, IL went without power for an average of 7.3 hours, a total of 58K customer-hours (Illinois average 4.0 hours). That ranks 40th worst of 102 Illinois counties and 1108th of 2,977 nationally.
Compared with IL, the US and 2022
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Marshall County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 1, 2023 00:45 | April 1, 2023 16:15 | 15h 30m | 2,959 | 4,039 |
| 2 | February 9, 2023 10:00 | February 10, 2023 01:15 | 15h 15m | 1,711 | 2,190 |
| 3 | August 15, 2023 17:15 | August 15, 2023 19:15 | 2h | 1,320 | 332 |
| 4 | June 29, 2023 17:30 | July 3, 2023 20:15 | 4d 2h | 1,138 | 11K |
| 5 | March 31, 2023 05:30 | March 31, 2023 11:30 | 6h | 925 | 1,556 |
| 6 | June 11, 2023 18:15 | June 12, 2023 08:45 | 14h 30m | 823 | 5,044 |
| 7 | October 6, 2023 01:15 | October 6, 2023 03:15 | 2h | 756 | 1,512 |
| 8 | November 26, 2023 11:15 | November 27, 2023 03:30 | 16h 15m | 683 | 1,494 |
| 9 | February 15, 2023 00:30 | February 15, 2023 15:15 | 14h 45m | 516 | 1,742 |
| 10 | May 31, 2023 17:45 | June 1, 2023 06:15 | 12h 30m | 503 | 983 |
Outage episodes by size in 2023: 21 reached 100+ customers, 4 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 2023, 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 | 2023 | 9.9 hrs | 1.33 | 1.9 hrs | 0.82 |
| Commonwealth Edison Co | 2023 | 1.6 hrs | 0.61 | 35 min | 0.48 |
| Corn Belt Energy Corporation | 2023 | 6.5 hrs | 4.54 | 2.6 hrs | 3.88 |
| 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 n/a of Illinois's customers in 2023; 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, 2023, 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/2023/illinois/marshall-county