County annual report · FIPS 19153
2017 Polk County, IA Power Outage Report
In 2017, customers in Polk County, IA went without power for an average of 1.4 hours, a total of 403K customer-hours (Iowa average 2.0 hours). That ranks 59th worst of 99 Iowa counties and 1865th of 2,786 nationally.
Compared with IA, the US and 2016
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Polk County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 17, 2017 18:45 | May 20, 2017 01:15 | 2d 6h | 16,113 | 76K |
| 2 | August 21, 2017 07:30 | August 21, 2017 21:45 | 14h 15m | 13,679 | 46K |
| 3 | April 18, 2017 02:45 | April 18, 2017 15:45 | 13h | 9,354 | 17K |
| 4 | July 2, 2017 08:00 | July 2, 2017 21:30 | 13h 30m | 8,961 | 15K |
| 5 | March 23, 2017 13:15 | March 23, 2017 19:30 | 6h 15m | 4,268 | 7,110 |
| 6 | March 15, 2017 18:45 | March 16, 2017 02:45 | 8h | 3,570 | 907 |
| 7 | September 17, 2017 05:45 | September 18, 2017 06:30 | 1d | 3,422 | 5,036 |
| 8 | July 20, 2017 12:00 | July 21, 2017 18:15 | 1d 6h | 3,241 | 5,845 |
| 9 | December 4, 2017 18:30 | December 5, 2017 18:45 | 1d | 3,177 | 8,930 |
| 10 | October 21, 2017 23:15 | October 22, 2017 07:45 | 8h 30m | 3,169 | 1,192 |
Outage episodes by size in 2017: 153 reached 100+ customers, 58 reached 1,000+ customers, 2 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 Polk County reported on EIA Form 861 for 2017, 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 | 2017 | 1.9 hrs | 1.00 | 1.6 hrs | 0.91 |
| Interstate Power and Light Co | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| Consumers Energy Coop - (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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 287,095 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. Polk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Polk County, IA annual power outage report, 2017, 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/2017/iowa/polk-county