County annual report · FIPS 19013
2023 Black Hawk County, IA Power Outage Report
In 2023, customers in Black Hawk County, IA went without power for an average of 0.7 hours, a total of 41K customer-hours (Iowa average 2.0 hours). That ranks 91st worst of 99 Iowa counties and 2767th 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 Black Hawk 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 | February 23, 2023 16:15 | February 23, 2023 22:45 | 6h 30m | 1,834 | 2,479 |
| 2 | April 16, 2023 21:30 | April 17, 2023 04:45 | 7h 15m | 1,619 | 3,266 |
| 3 | May 30, 2023 18:45 | May 31, 2023 04:00 | 9h 15m | 1,610 | 1,280 |
| 4 | October 12, 2023 22:15 | October 13, 2023 07:45 | 9h 30m | 1,473 | 1,946 |
| 5 | March 31, 2023 19:30 | April 1, 2023 02:45 | 7h 15m | 1,263 | 1,308 |
| 6 | May 8, 2023 09:00 | May 8, 2023 16:00 | 7h | 1,207 | 1,618 |
| 7 | October 11, 2023 14:00 | October 11, 2023 19:15 | 5h 15m | 1,147 | 870 |
| 8 | June 18, 2023 19:00 | June 18, 2023 22:00 | 3h | 1,112 | 1,947 |
| 9 | August 11, 2023 07:30 | August 11, 2023 11:00 | 3h 30m | 938 | 1,635 |
| 10 | April 20, 2023 17:45 | April 20, 2023 22:45 | 5h | 877 | 1,519 |
Outage episodes by size in 2023: 41 reached 100+ customers, 8 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 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 |
| East-Central Iowa Rural Elec Coop | 2023 | 52 min | 0.65 | 52 min | 0.65 |
| 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 2023; 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, 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/black-hawk-county