County annual report · FIPS 19157
2018 Poweshiek County, IA Power Outage Report
In 2018, customers in Poweshiek County, IA went without power for an average of 3.6 hours, a total of 24K customer-hours (Iowa average 2.2 hours). That ranks 23rd worst of 99 Iowa counties and 1351st 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 Poweshiek 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 | June 6, 2018 23:30 | June 8, 2018 04:45 | 1d 5h | 2,983 | 12K |
| 2 | May 14, 2018 05:30 | May 14, 2018 07:15 | 1h 45m | 1,022 | 1,126 |
| 3 | September 1, 2018 05:15 | September 1, 2018 07:30 | 2h 15m | 407 | 814 |
| 4 | May 3, 2018 08:30 | May 3, 2018 10:15 | 1h 45m | 362 | 542 |
| 5 | March 24, 2018 08:30 | March 25, 2018 16:30 | 1d 8h | 323 | 2,688 |
| 6 | August 22, 2018 10:15 | August 22, 2018 11:15 | 1h | 244 | 244 |
| 7 | September 14, 2018 10:15 | September 14, 2018 11:45 | 1h 30m | 244 | 366 |
| 8 | October 5, 2018 23:00 | October 6, 2018 03:45 | 4h 45m | 244 | 293 |
| 9 | December 4, 2018 21:45 | December 4, 2018 22:00 | 15m | 204 | 51 |
| 10 | November 27, 2018 20:45 | November 27, 2018 22:15 | 1h 30m | 203 | 52 |
Outage episodes by size in 2018: 16 reached 100+ customers, 2 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 Poweshiek 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Pella Cooperative Elec Assn | - | - | - | - | - |
| City of Brooklyn - (IA) | - | - | - | - | - |
| City of Montezuma - (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 ÷ 6,708 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. Poweshiek County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Poweshiek 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/poweshiek-county