County annual report · FIPS 19013
2017 Black Hawk County, IA Power Outage Report
In 2017, customers in Black Hawk County, IA went without power for an average of 1.9 hours, a total of 110K customer-hours (Iowa average 2.0 hours). That ranks 43rd worst of 99 Iowa counties and 1667th of 2,786 nationally.
Compared with IA, the US and 2016
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Black Hawk County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 7, 2017 02:15 | March 7, 2017 15:30 | 13h 15m | 8,304 | 21K |
| 2 | November 20, 2017 07:30 | November 20, 2017 08:30 | 1h | 4,644 | 2,903 |
| 3 | April 7, 2017 10:30 | April 7, 2017 13:30 | 3h | 4,257 | 5,171 |
| 4 | July 8, 2017 23:00 | July 9, 2017 00:00 | 1h | 3,927 | 3,574 |
| 5 | May 17, 2017 18:45 | May 20, 2017 03:30 | 2d 8h | 3,319 | 35K |
| 6 | October 25, 2017 18:30 | October 25, 2017 21:30 | 3h | 3,054 | 771 |
| 7 | June 29, 2017 00:00 | June 29, 2017 03:00 | 3h | 2,785 | 701 |
| 8 | April 24, 2017 17:15 | April 25, 2017 01:15 | 8h | 2,502 | 1,897 |
| 9 | June 2, 2017 13:00 | June 2, 2017 14:45 | 1h 45m | 2,499 | 1,865 |
| 10 | March 7, 2017 17:00 | March 7, 2017 23:45 | 6h 45m | 2,468 | 2,333 |
Outage episodes by size in 2017: 64 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 2017, 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 | 2017 | 1.9 hrs | 1.00 | 1.6 hrs | 0.91 |
| Interstate Power and Light Co | - | - | - | - | - |
| East-Central Iowa Rural Elec Coop | - | - | - | - | - |
| 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 2017; 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, 2017, 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/2017/iowa/black-hawk-county