County annual report · FIPS 19029
2024 Cass County, IA Power Outage Report
In 2024, customers in Cass County, IA went without power for an average of 2.6 hours, a total of 27K customer-hours (Iowa average 3.2 hours). That ranks 58th worst of 99 Iowa counties and 2237th of 2,990 nationally.
Compared with IA, the US and 2023
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Cass County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 9, 2024 16:00 | January 9, 2024 23:00 | 7h | 993 | 3,476 |
| 2 | May 21, 2024 12:30 | May 23, 2024 18:45 | 2d 6h | 935 | 9,221 |
| 3 | February 29, 2024 20:45 | February 29, 2024 23:45 | 3h | 608 | 599 |
| 4 | May 12, 2024 22:00 | May 12, 2024 23:45 | 1h 45m | 510 | 893 |
| 5 | May 14, 2024 19:30 | May 14, 2024 20:45 | 1h 15m | 510 | 638 |
| 6 | May 16, 2024 15:15 | May 16, 2024 16:45 | 1h 30m | 510 | 765 |
| 7 | July 31, 2024 23:45 | August 1, 2024 18:00 | 18h 15m | 390 | 5,322 |
| 8 | June 19, 2024 01:45 | June 19, 2024 06:45 | 5h | 149 | 54 |
| 9 | November 10, 2024 10:30 | November 10, 2024 12:45 | 2h 15m | 148 | 222 |
| 10 | January 1, 2024 10:30 | January 1, 2024 10:45 | 15m | 144 | 36 |
Outage episodes by size in 2024: 15 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 2024, 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 | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| 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 2024; 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, 2024, 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/2024/iowa/cass-county