County annual report · FIPS 19153
2015 Polk County, IA Power Outage Report
In 2015, customers in Polk County, IA went without power for an average of 0.5 hours, a total of 153K customer-hours (Iowa average 1.1 hours). That ranks 76th worst of 99 Iowa counties and 2049th 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 Polk 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 | September 21, 2015 14:15 | September 23, 2015 05:15 | 1d 15h | 8,774 | 11K |
| 2 | December 7, 2015 14:00 | December 8, 2015 01:00 | 11h | 8,597 | 9,390 |
| 3 | November 11, 2015 14:30 | November 13, 2015 04:15 | 1d 13h | 6,799 | 30K |
| 4 | September 12, 2015 01:15 | September 12, 2015 02:00 | 45m | 3,476 | 875 |
| 5 | September 2, 2015 08:45 | September 4, 2015 02:45 | 1d 18h | 3,261 | 8,462 |
| 6 | August 30, 2015 14:00 | August 31, 2015 06:30 | 16h 30m | 2,773 | 2,009 |
| 7 | August 12, 2015 20:45 | August 13, 2015 04:45 | 8h | 2,762 | 4,806 |
| 8 | September 18, 2015 21:45 | September 19, 2015 17:45 | 20h | 2,758 | 3,751 |
| 9 | January 8, 2015 21:00 | January 8, 2015 23:15 | 2h 15m | 2,558 | 3,258 |
| 10 | September 1, 2015 08:00 | September 1, 2015 09:15 | 1h 15m | 2,256 | 1,061 |
Outage episodes by size in 2015: 57 reached 100+ customers, 27 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 Polk 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 |
| 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 2015; 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, 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/polk-county