County annual report · FIPS 19013
2024 Black Hawk County, IA Power Outage Report
In 2024, customers in Black Hawk County, IA went without power for an average of 1.7 hours, a total of 96K customer-hours (Iowa average 3.2 hours). That ranks 79th worst of 99 Iowa counties and 2507th of 2,990 nationally.
Compared with IA, the US and 2023
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Black Hawk County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 21, 2024 21:30 | May 23, 2024 08:30 | 1d 11h | 7,552 | 46K |
| 2 | April 3, 2024 14:00 | April 4, 2024 04:15 | 14h 15m | 5,153 | 5,532 |
| 3 | December 30, 2024 14:45 | January 1, 2025 00:00 | 1d 9h | 3,388 | 4,514 |
| 4 | June 22, 2024 12:30 | June 22, 2024 21:00 | 8h 30m | 2,393 | 1,837 |
| 5 | June 19, 2024 03:45 | June 19, 2024 07:45 | 4h | 2,352 | 3,546 |
| 6 | August 18, 2024 15:00 | August 18, 2024 16:30 | 1h 30m | 2,226 | 563 |
| 7 | May 20, 2024 16:45 | May 21, 2024 00:30 | 7h 45m | 2,154 | 2,386 |
| 8 | June 30, 2024 13:45 | June 30, 2024 18:15 | 4h 30m | 1,601 | 515 |
| 9 | October 13, 2024 13:00 | October 13, 2024 14:15 | 1h 15m | 1,547 | 1,357 |
| 10 | August 4, 2024 00:45 | August 5, 2024 18:30 | 1d 17h | 1,256 | 986 |
Outage episodes by size in 2024: 50 reached 100+ customers, 16 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 Black Hawk County reported on EIA Form 861 for 2024, 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 2024; 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, 2024, 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/2024/iowa/black-hawk-county