County annual report · FIPS 17123
2015 Marshall County, IL Power Outage Report
In 2015, customers in Marshall County, IL went without power for an average of 17.2 hours, a total of 136K customer-hours (Illinois average 2.3 hours). That ranks 4th worst of 100 Illinois counties and 142nd 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 Marshall 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 | December 28, 2015 14:00 | December 31, 2015 00:15 | 2d 10h | 4,821 | 101K |
| 2 | November 18, 2015 15:45 | November 22, 2015 20:15 | 4d 4h | 1,114 | 11K |
| 3 | August 18, 2015 23:15 | August 19, 2015 14:30 | 15h 15m | 933 | 2,511 |
| 4 | June 11, 2015 00:00 | June 12, 2015 10:45 | 1d 10h | 823 | 6,344 |
| 5 | August 24, 2015 06:00 | August 24, 2015 11:30 | 5h 30m | 660 | 1,472 |
| 6 | November 24, 2015 15:00 | December 8, 2015 15:00 | 14d | 344 | 1,561 |
| 7 | December 23, 2015 17:15 | December 23, 2015 22:00 | 4h 45m | 286 | 227 |
| 8 | June 21, 2015 01:00 | June 21, 2015 21:15 | 20h 15m | 264 | 1,754 |
| 9 | September 10, 2015 18:30 | September 11, 2015 17:45 | 23h 15m | 215 | 1,114 |
| 10 | May 4, 2015 12:45 | May 4, 2015 16:30 | 3h 45m | 211 | 524 |
Outage episodes by size in 2015: 20 reached 100+ customers, 2 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 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 |
| Commonwealth Edison Co | 2015 | 1.8 hrs | 0.97 | 72 min | 0.86 |
| Corn Belt Energy Corporation | 2015 | 10.7 hrs | 5.30 | 4.1 hrs | 4.20 |
| 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 2015; 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, 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/marshall-county