County annual report · FIPS 19153
2023 Polk County, IA Power Outage Report
In 2023, customers in Polk County, IA went without power for an average of 0.9 hours, a total of 257K customer-hours (Iowa average 2.0 hours). That ranks 79th worst of 99 Iowa counties and 2708th of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Polk County, 2023
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 28, 2023 10:15 | September 28, 2023 23:15 | 13h | 5,675 | 4,907 |
| 2 | July 26, 2023 13:45 | July 27, 2023 04:00 | 14h 15m | 4,794 | 6,061 |
| 3 | August 17, 2023 12:15 | August 18, 2023 05:15 | 17h | 4,699 | 4,214 |
| 4 | November 17, 2023 14:00 | November 17, 2023 21:00 | 7h | 4,686 | 3,110 |
| 5 | August 30, 2023 17:00 | August 31, 2023 00:15 | 7h 15m | 4,663 | 5,513 |
| 6 | August 5, 2023 23:45 | August 6, 2023 22:15 | 22h 30m | 4,628 | 7,750 |
| 7 | August 4, 2023 07:45 | August 4, 2023 19:15 | 11h 30m | 4,627 | 7,568 |
| 8 | July 11, 2023 12:00 | July 12, 2023 03:00 | 15h | 4,253 | 4,882 |
| 9 | September 7, 2023 01:15 | September 7, 2023 04:45 | 3h 30m | 3,946 | 1,207 |
| 10 | January 26, 2023 15:00 | January 27, 2023 02:45 | 11h 45m | 3,773 | 5,625 |
Outage episodes by size in 2023: 153 reached 100+ customers, 54 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 2023, 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 | 2023 | 2.8 hrs | 1.13 | 78 min | 0.83 |
| Consumers Energy Coop - (IA) | 2023 | 1.9 hrs | 0.92 | 1.9 hrs | 0.92 |
| 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 2023; 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, 2023, 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/2023/iowa/polk-county