County annual report · FIPS 19029
2023 Cass County, IA Power Outage Report
In 2023, customers in Cass County, IA went without power for an average of 1.2 hours, a total of 12K customer-hours (Iowa average 2.0 hours). That ranks 70th worst of 99 Iowa counties and 2601st of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Cass County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 1, 2023 05:15 | April 1, 2023 05:45 | 30m | 1,057 | 265 |
| 2 | April 15, 2023 03:30 | April 15, 2023 20:15 | 16h 45m | 962 | 5,302 |
| 3 | July 1, 2023 17:15 | July 1, 2023 19:00 | 1h 45m | 962 | 1,444 |
| 4 | March 14, 2023 19:30 | March 14, 2023 20:15 | 45m | 371 | 278 |
| 5 | July 12, 2023 12:00 | July 12, 2023 17:15 | 5h 15m | 167 | 411 |
| 6 | May 18, 2023 05:15 | May 18, 2023 13:30 | 8h 15m | 145 | 946 |
| 7 | May 11, 2023 00:00 | May 11, 2023 04:00 | 4h | 112 | 266 |
| 8 | September 19, 2023 19:30 | September 20, 2023 00:45 | 5h 15m | 100 | 45 |
| 9 | April 20, 2023 08:15 | April 20, 2023 13:45 | 5h 30m | 89 | 273 |
| 10 | May 1, 2023 02:00 | May 1, 2023 02:15 | 15m | 81 | 20 |
Outage episodes by size in 2023: 8 reached 100+ customers, 1 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 2023, 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 | 2023 | 2.8 hrs | 1.13 | 78 min | 0.83 |
| 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 n/a of Iowa's customers in 2023; 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, 2023, 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/2023/iowa/cass-county