County annual report · FIPS 17035
2021 Cumberland County, IL Power Outage Report
In 2021, customers in Cumberland County, IL went without power for an average of 3.9 hours, a total of 19K customer-hours (Illinois average 2.3 hours). That ranks 30th worst of 102 Illinois counties and 1553rd of 2,974 nationally.
Compared with IL, the US and 2020
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Cumberland County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 28, 2021 01:45 | March 28, 2021 04:45 | 3h | 984 | 1,274 |
| 2 | August 10, 2021 21:30 | August 11, 2021 03:00 | 5h 30m | 939 | 2,923 |
| 3 | July 22, 2021 12:15 | July 22, 2021 19:00 | 6h 45m | 833 | 1,376 |
| 4 | February 24, 2021 15:00 | February 24, 2021 18:30 | 3h 30m | 347 | 1,127 |
| 5 | April 8, 2021 14:15 | April 8, 2021 16:30 | 2h 15m | 345 | 88 |
| 6 | February 22, 2021 15:45 | February 22, 2021 18:00 | 2h 15m | 344 | 157 |
| 7 | September 13, 2021 17:00 | September 13, 2021 17:15 | 15m | 342 | 86 |
| 8 | January 31, 2021 07:30 | January 31, 2021 11:30 | 4h | 339 | 1,356 |
| 9 | December 29, 2021 05:00 | December 29, 2021 11:30 | 6h 30m | 255 | 334 |
| 10 | February 3, 2021 15:15 | February 3, 2021 20:15 | 5h | 242 | 548 |
Outage episodes by size in 2021: 32 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 Cumberland County reported on EIA Form 861 for 2021, 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 | 2021 | 3.2 hrs | 1.11 | 2.0 hrs | 0.88 |
| Norris Electric Coop | - | - | - | - | - |
| Shelby Electric Coop, Inc | - | - | - | - | - |
| Coles-Moultrie Electric Coop | - | - | - | - | - |
| Village of Greenup - (IL) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Illinois's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,929 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. Cumberland County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cumberland County, IL annual power outage report, 2021, 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/2021/illinois/cumberland-county