County annual report · FIPS 19153
2025 Polk County, IA Power Outage Report
In 2025, customers in Polk County, IA went without power for an average of 1.9 hours, a total of 551K customer-hours (Iowa average 2.9 hours). That ranks 77th worst of 99 Iowa counties and 2440th 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 Polk 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 | July 28, 2025 08:00 | July 29, 2025 07:00 | 23h | 24,009 | 91K |
| 2 | July 11, 2025 04:15 | July 12, 2025 07:30 | 1d 3h | 18,190 | 86K |
| 3 | March 4, 2025 21:15 | March 7, 2025 07:00 | 2d 9h | 8,989 | 64K |
| 4 | September 17, 2025 11:15 | September 18, 2025 07:15 | 20h | 8,707 | 12K |
| 5 | March 14, 2025 11:30 | March 16, 2025 03:45 | 1d 16h | 6,391 | 23K |
| 6 | September 2, 2025 08:15 | September 2, 2025 19:15 | 11h | 5,501 | 9,891 |
| 7 | July 29, 2025 09:45 | July 31, 2025 00:45 | 1d 15h | 4,974 | 29K |
| 8 | June 15, 2025 21:30 | June 16, 2025 07:15 | 9h 45m | 4,635 | 4,918 |
| 9 | October 11, 2025 10:15 | October 11, 2025 13:15 | 3h | 4,033 | 7,873 |
| 10 | October 20, 2025 09:15 | October 21, 2025 05:30 | 20h 15m | 3,739 | 2,718 |
Outage episodes by size in 2025: 115 reached 100+ customers, 55 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 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| Consumers Energy Coop - (IA) | 2024 | 8.2 hrs | 1.54 | 1.6 hrs | 1.00 |
| Interstate Power and Light Co | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
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 ÷ 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, 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/polk-county