County annual report · FIPS 17123
2018 Marshall County, IL Power Outage Report
In 2018, customers in Marshall County, IL went without power for an average of 4.3 hours, a total of 34K customer-hours (Illinois average 2.5 hours). That ranks 24th worst of 102 Illinois counties and 1171st of 2,798 nationally.
Compared with IL, the US and 2017
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Marshall County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 13, 2018 12:30 | May 13, 2018 15:30 | 3h | 971 | 1,709 |
| 2 | May 17, 2018 20:00 | May 17, 2018 22:30 | 2h 30m | 842 | 1,963 |
| 3 | October 28, 2018 15:15 | October 29, 2018 14:00 | 22h 45m | 822 | 2,532 |
| 4 | October 7, 2018 13:30 | October 7, 2018 15:30 | 2h | 770 | 1,475 |
| 5 | November 25, 2018 23:30 | November 29, 2018 17:30 | 3d 18h | 678 | 13K |
| 6 | August 3, 2018 21:15 | August 4, 2018 04:45 | 7h 30m | 557 | 1,818 |
| 7 | July 14, 2018 03:15 | July 14, 2018 15:45 | 12h 30m | 309 | 1,797 |
| 8 | July 1, 2018 20:00 | July 2, 2018 14:30 | 18h 30m | 247 | 1,398 |
| 9 | March 29, 2018 00:00 | March 29, 2018 04:30 | 4h 30m | 216 | 909 |
| 10 | April 26, 2018 04:00 | April 26, 2018 07:00 | 3h | 206 | 618 |
Outage episodes by size in 2018: 14 reached 100+ customers, 0 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 2018, 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 | 2018 | 3.5 hrs | 1.06 | 1.8 hrs | 0.90 |
| Commonwealth Edison Co | 2018 | 2.0 hrs | 0.82 | 58 min | 0.70 |
| Corn Belt Energy Corporation | 2018 | 6.9 hrs | 4.02 | 3.3 hrs | 3.75 |
| 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 92% of Illinois's customers in 2018; 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, 2018, 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/2018/illinois/marshall-county