County annual report · FIPS 19169
2025 Story County, IA Power Outage Report
In 2025, customers in Story County, IA went without power for an average of 1.1 hours, a total of 69K customer-hours (Iowa average 2.9 hours). That ranks 94th worst of 99 Iowa counties and 2732nd of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Story County, 2025
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 30, 2025 16:30 | January 30, 2025 18:45 | 2h 15m | 2,318 | 587 |
| 2 | March 5, 2025 05:30 | March 6, 2025 23:15 | 1d 17h | 2,256 | 14K |
| 3 | June 26, 2025 20:00 | June 27, 2025 04:15 | 8h 15m | 1,452 | 516 |
| 4 | December 28, 2025 16:45 | December 28, 2025 21:00 | 4h 15m | 1,260 | 3,169 |
| 5 | July 24, 2025 11:15 | July 24, 2025 19:30 | 8h 15m | 1,232 | 2,209 |
| 6 | July 19, 2025 11:00 | July 20, 2025 10:30 | 23h 30m | 987 | 1,774 |
| 7 | July 12, 2025 17:15 | July 12, 2025 22:15 | 5h | 957 | 4,785 |
| 8 | April 27, 2025 11:15 | April 27, 2025 19:30 | 8h 15m | 789 | 1,759 |
| 9 | August 20, 2025 01:45 | August 20, 2025 09:15 | 7h 30m | 785 | 1,572 |
| 10 | April 13, 2025 19:45 | April 14, 2025 05:30 | 9h 45m | 479 | 4,263 |
Outage episodes by size in 2025: 36 reached 100+ customers, 5 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 Story County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Consumers Energy Coop - (IA) | 2024 | 8.2 hrs | 1.54 | 1.6 hrs | 1.00 |
| City of Ames - (IA) | 2024 | 39 min | 0.47 | 19 min | 0.26 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| City of Story City - (IA) | - | - | - | - | - |
| City of State Center - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 63,396 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. Story County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Story County, IA annual power outage report, 2025, 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/2025/iowa/story-county