County annual report · FIPS 17173
2018 Shelby County, IL Power Outage Report
In 2018, customers in Shelby County, IL went without power for an average of 3.2 hours, a total of 18K customer-hours (Illinois average 2.5 hours). That ranks 36th worst of 102 Illinois counties and 1446th 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 Shelby 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 | June 10, 2018 19:30 | June 12, 2018 11:45 | 1d 16h | 711 | 7,330 |
| 2 | August 17, 2018 06:45 | August 17, 2018 13:45 | 7h | 432 | 1,206 |
| 3 | May 10, 2018 01:30 | May 10, 2018 15:30 | 14h | 391 | 4,635 |
| 4 | February 25, 2018 05:00 | February 25, 2018 10:45 | 5h 45m | 383 | 629 |
| 5 | September 8, 2018 14:45 | September 8, 2018 18:15 | 3h 30m | 126 | 237 |
| 6 | September 26, 2018 07:15 | September 26, 2018 10:45 | 3h 30m | 126 | 411 |
| 7 | June 22, 2018 21:00 | June 23, 2018 05:45 | 8h 45m | 124 | 569 |
| 8 | January 18, 2018 17:30 | January 18, 2018 20:15 | 2h 45m | 98 | 127 |
| 9 | April 26, 2018 21:15 | April 26, 2018 22:00 | 45m | 95 | 71 |
| 10 | August 15, 2018 23:45 | August 16, 2018 03:15 | 3h 30m | 91 | 319 |
Outage episodes by size in 2018: 7 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 Shelby 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 |
| Southwestern Electric Coop Inc - (IL) | 2018 | 4.6 hrs | 1.89 | 4.6 hrs | 1.89 |
| Ameren | - | - | - | - | - |
| Norris Electric Coop | - | - | - | - | - |
| Shelby Electric Coop, Inc | - | - | - | - | - |
| Coles-Moultrie Electric Coop | - | - | - | - | - |
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 ÷ 5,708 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. Shelby County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Shelby 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/shelby-county