County annual report · FIPS 19013
2025 Black Hawk County, IA Power Outage Report
In 2025, customers in Black Hawk County, IA went without power for an average of 2.7 hours, a total of 153K customer-hours (Iowa average 2.9 hours). That ranks 54th worst of 99 Iowa counties and 2178th 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 Black Hawk 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 29, 2025 06:30 | July 31, 2025 11:45 | 2d 5h | 12,895 | 79K |
| 2 | May 16, 2025 05:45 | May 16, 2025 15:30 | 9h 45m | 2,754 | 8,206 |
| 3 | March 4, 2025 22:15 | March 5, 2025 00:00 | 1h 45m | 2,648 | 2,992 |
| 4 | June 24, 2025 00:30 | June 24, 2025 06:30 | 6h | 2,642 | 2,146 |
| 5 | June 20, 2025 13:30 | June 21, 2025 04:30 | 15h | 2,193 | 3,693 |
| 6 | December 30, 2025 00:15 | December 30, 2025 01:15 | 1h | 1,960 | 492 |
| 7 | June 12, 2025 00:15 | June 12, 2025 18:00 | 17h 45m | 1,645 | 6,170 |
| 8 | July 3, 2025 21:45 | July 4, 2025 08:00 | 10h 15m | 1,640 | 5,057 |
| 9 | November 25, 2025 04:15 | November 25, 2025 06:00 | 1h 45m | 1,628 | 1,381 |
| 10 | November 30, 2025 07:15 | November 30, 2025 09:45 | 2h 30m | 1,559 | 2,911 |
Outage episodes by size in 2025: 52 reached 100+ customers, 14 reached 1,000+ customers, 1 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 Black Hawk 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 |
| East-Central Iowa Rural Elec Coop | 2024 | 38 min | 0.53 | 38 min | 0.53 |
| Interstate Power and Light Co | - | - | - | - | - |
| Grundy County Rural Elec Coop | - | - | - | - | - |
| Cedar Falls Utilities | - | - | - | - | - |
| La Porte City Utilities | - | - | - | - | - |
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 ÷ 57,533 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. Black Hawk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Black Hawk 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/black-hawk-county