County annual report · FIPS 17017
2017 Cass County, IL Power Outage Report
In 2017, customers in Cass County, IL went without power for an average of 0.5 hours, a total of 3,029 customer-hours (Illinois average 1.4 hours). That ranks 86th worst of 102 Illinois counties and 2289th of 2,786 nationally.
Compared with IL, the US and 2016
Coverage line is EAGLE-I's share of Illinois customers tracked each year.
Biggest outages in Cass County, 2017
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 1, 2017 20:30 | May 1, 2017 22:30 | 2h | 336 | 337 |
| 2 | May 10, 2017 23:45 | May 11, 2017 07:30 | 7h 45m | 261 | 1,949 |
| 3 | December 13, 2017 08:30 | December 13, 2017 11:30 | 3h | 65 | 192 |
| 4 | January 13, 2017 16:30 | January 13, 2017 18:00 | 1h 30m | 27 | 41 |
| 5 | January 18, 2017 18:30 | January 18, 2017 19:15 | 45m | 20 | 15 |
| 6 | November 21, 2017 20:30 | November 22, 2017 01:45 | 5h 15m | 20 | 76 |
| 7 | November 28, 2017 18:15 | November 28, 2017 19:45 | 1h 30m | 18 | 27 |
| 8 | December 16, 2017 14:00 | December 16, 2017 17:45 | 3h 45m | 13 | 41 |
| 9 | May 10, 2017 13:30 | May 10, 2017 20:30 | 7h | 10 | 18 |
| 10 | January 12, 2017 17:00 | January 12, 2017 19:15 | 2h 15m | 9 | 20 |
Outage episodes by size in 2017: 2 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 Cass County reported on EIA Form 861 for 2017, 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 | 2017 | 3.2 hrs | 1.12 | 2.0 hrs | 0.90 |
| Ameren | - | - | - | - | - |
| Illinois Rural Electric Coop | - | - | - | - | - |
| Menard 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 n/a of Illinois's customers in 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 6,087 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. Cass County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cass County, IL annual power outage report, 2017, 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/2017/illinois/cass-county