County annual report · FIPS 19013
2020 Black Hawk County, IA Power Outage Report
In 2020, customers in Black Hawk County, IA went without power for an average of 1.5 hours, a total of 89K customer-hours (Iowa average 27.4 hours). That ranks 71st worst of 99 Iowa counties and 2449th of 3,019 nationally.
Compared with IA, the US and 2019
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Black Hawk County, 2020
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 15, 2020 08:45 | July 15, 2020 15:15 | 6h 30m | 8,078 | 13K |
| 2 | July 9, 2020 17:45 | July 10, 2020 11:45 | 18h | 7,424 | 20K |
| 3 | September 23, 2020 14:00 | September 23, 2020 14:15 | 15m | 3,707 | 927 |
| 4 | May 23, 2020 21:45 | May 23, 2020 22:00 | 15m | 3,028 | 757 |
| 5 | May 25, 2020 13:00 | May 25, 2020 13:15 | 15m | 3,027 | 757 |
| 6 | February 2, 2020 17:30 | February 2, 2020 19:15 | 1h 45m | 2,952 | 2,216 |
| 7 | April 16, 2020 13:45 | April 16, 2020 14:00 | 15m | 2,720 | 680 |
| 8 | August 10, 2020 15:00 | August 18, 2020 02:15 | 7d 11h | 2,480 | 14K |
| 9 | July 12, 2020 09:30 | July 12, 2020 13:30 | 4h | 1,938 | 1,954 |
| 10 | January 9, 2020 14:15 | January 9, 2020 15:00 | 45m | 1,896 | 1,112 |
Outage episodes by size in 2020: 52 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 2020, 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 | 2020 | 18.3 hrs | 1.43 | 82 min | 0.79 |
| East-Central Iowa Rural Elec Coop | 2020 | 14.1 hrs | 1.01 | 54 min | 0.59 |
| 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 91% of Iowa's customers in 2020; 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, 2020, 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/2020/iowa/black-hawk-county