County annual report · FIPS 19153
2019 Polk County, IA Power Outage Report
In 2019, customers in Polk County, IA went without power for an average of 1.3 hours, a total of 384K customer-hours (Iowa average 2.2 hours). That ranks 78th worst of 99 Iowa counties and 2359th of 2,945 nationally.
Compared with IA, the US and 2018
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Polk County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 20, 2019 10:15 | August 21, 2019 18:00 | 1d 7h | 16,814 | 61K |
| 2 | February 12, 2019 16:30 | February 12, 2019 22:00 | 5h 30m | 15,414 | 4,636 |
| 3 | May 16, 2019 13:45 | May 18, 2019 03:45 | 1d 14h | 10,372 | 46K |
| 4 | July 1, 2019 20:45 | July 2, 2019 03:15 | 6h 30m | 7,844 | 4,506 |
| 5 | September 10, 2019 07:45 | September 11, 2019 05:30 | 21h 45m | 7,329 | 24K |
| 6 | November 26, 2019 21:15 | November 27, 2019 05:15 | 8h | 5,871 | 6,585 |
| 7 | July 27, 2019 02:00 | July 27, 2019 08:30 | 6h 30m | 4,661 | 1,172 |
| 8 | August 19, 2019 11:45 | August 19, 2019 17:00 | 5h 15m | 4,611 | 4,658 |
| 9 | October 20, 2019 16:15 | October 20, 2019 18:45 | 2h 30m | 4,456 | 5,406 |
| 10 | May 27, 2019 12:00 | May 28, 2019 04:15 | 16h 15m | 3,575 | 7,876 |
Outage episodes by size in 2019: 152 reached 100+ customers, 70 reached 1,000+ customers, 3 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 2019, 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 |
| Consumers Energy Coop - (IA) | 2018 | 2.4 hrs | 1.61 | 1.6 hrs | 1.35 |
| 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 89% of Iowa's customers in 2019; 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, 2019, 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/2019/iowa/polk-county