County annual report · FIPS 19169
2018 Story County, IA Power Outage Report
In 2018, customers in Story County, IA went without power for an average of 0.5 hours, a total of 32K customer-hours (Iowa average 2.2 hours). That ranks 96th worst of 99 Iowa counties and 2498th 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 Story 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 | April 14, 2018 00:45 | April 16, 2018 12:15 | 2d 11h | 1,909 | 7,810 |
| 2 | June 4, 2018 14:15 | June 7, 2018 06:45 | 2d 16h | 1,424 | 3,841 |
| 3 | January 22, 2018 05:45 | January 22, 2018 07:15 | 1h 30m | 1,251 | 1,753 |
| 4 | May 29, 2018 21:15 | May 30, 2018 03:30 | 6h 15m | 1,185 | 528 |
| 5 | May 22, 2018 12:15 | May 22, 2018 18:30 | 6h 15m | 1,177 | 1,979 |
| 6 | September 25, 2018 16:45 | September 25, 2018 19:00 | 2h 15m | 741 | 1,111 |
| 7 | June 11, 2018 05:45 | June 11, 2018 08:45 | 3h | 421 | 1,194 |
| 8 | April 11, 2018 19:30 | April 11, 2018 20:30 | 1h | 325 | 325 |
| 9 | June 30, 2018 23:00 | July 1, 2018 08:15 | 9h 15m | 309 | 1,586 |
| 10 | March 24, 2018 08:00 | March 26, 2018 03:30 | 1d 19h | 287 | 1,822 |
Outage episodes by size in 2018: 18 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 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 |
|---|---|---|---|---|---|
| Consumers Energy Coop - (IA) | 2018 | 2.4 hrs | 1.61 | 1.6 hrs | 1.35 |
| City of Ames - (IA) | 2018 | 40 min | 0.52 | 40 min | 0.52 |
| 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 89% of Iowa's customers in 2018; 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, 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/story-county