County annual report · FIPS 19029
2018 Cass County, IA Power Outage Report
In 2018, customers in Cass County, IA went without power for an average of 0.6 hours, a total of 5,839 customer-hours (Iowa average 2.2 hours). That ranks 94th worst of 99 Iowa counties and 2478th of 2,798 nationally.
Compared with IA, the US and 2017
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Cass 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 19, 2018 11:00 | June 19, 2018 12:00 | 1h | 856 | 441 |
| 2 | April 27, 2018 21:30 | April 27, 2018 23:15 | 1h 45m | 547 | 416 |
| 3 | June 28, 2018 15:30 | June 29, 2018 12:45 | 21h 15m | 285 | 823 |
| 4 | April 13, 2018 20:45 | April 14, 2018 02:30 | 5h 45m | 181 | 156 |
| 5 | May 10, 2018 18:45 | May 10, 2018 19:45 | 1h | 148 | 139 |
| 6 | March 27, 2018 00:15 | March 27, 2018 01:45 | 1h 30m | 126 | 158 |
| 7 | February 11, 2018 19:30 | February 11, 2018 21:00 | 1h 30m | 109 | 137 |
| 8 | April 20, 2018 17:45 | April 20, 2018 20:30 | 2h 45m | 109 | 273 |
| 9 | November 10, 2018 16:15 | November 15, 2018 17:30 | 5d 1h | 109 | 403 |
| 10 | June 2, 2018 07:15 | June 2, 2018 16:45 | 9h 30m | 108 | 246 |
Outage episodes by size in 2018: 13 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 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
| Farmers Electric Coop, Inc - (IA) | 2018 | 5.9 hrs | 1.44 | 2.1 hrs | 1.26 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| Guthrie County Rural E C A | - | - | - | - | - |
| Nishnabotna Valley R E C | - | - | - | - | - |
| Atlantic Municipal Utilities | - | - | - | - | - |
| City of Anita - (IA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of Iowa's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 10,329 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, IA 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/iowa/cass-county