County annual report · FIPS 19029
2015 Cass County, IA Power Outage Report
In 2015, customers in Cass County, IA went without power for an average of 0.3 hours, a total of 3,308 customer-hours (Iowa average 1.1 hours). That ranks 87th worst of 99 Iowa counties and 2177th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Cass County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 26, 2015 06:00 | December 26, 2015 08:30 | 2h 30m | 174 | 435 |
| 2 | July 11, 2015 11:30 | July 11, 2015 13:30 | 2h | 133 | 233 |
| 3 | November 27, 2015 02:00 | November 29, 2015 00:30 | 1d 22h | 116 | 885 |
| 4 | January 1, 2015 19:30 | January 1, 2015 21:00 | 1h 30m | 112 | 168 |
| 5 | March 12, 2015 03:30 | March 12, 2015 05:00 | 1h 30m | 111 | 167 |
| 6 | March 12, 2015 12:15 | March 12, 2015 14:45 | 2h 30m | 111 | 153 |
| 7 | June 3, 2015 10:45 | June 3, 2015 13:45 | 3h | 111 | 135 |
| 8 | December 24, 2015 16:45 | December 24, 2015 18:45 | 2h | 109 | 218 |
| 9 | August 9, 2015 06:15 | August 9, 2015 17:30 | 11h 15m | 71 | 232 |
| 10 | December 11, 2015 20:15 | December 11, 2015 23:15 | 3h | 50 | 101 |
Outage episodes by size in 2015: 8 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 2015, 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 | 2015 | 2.2 hrs | 1.05 | 87 min | 0.88 |
| Southwest Iowa Rural Elec Coop | 2015 | 1.6 hrs | 1.15 | 66 min | 0.86 |
| Farmers Electric Coop, Inc - (IA) | 2015 | 54 min | 0.75 | 54 min | 0.75 |
| 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 2015; 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, 2015, 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/2015/iowa/cass-county