County annual report · FIPS 19013
2015 Black Hawk County, IA Power Outage Report
In 2015, customers in Black Hawk County, IA went without power for an average of 0.4 hours, a total of 21K customer-hours (Iowa average 1.1 hours). That ranks 83rd worst of 99 Iowa counties and 2145th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Black Hawk County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 4, 2015 09:45 | December 4, 2015 11:00 | 1h 15m | 2,391 | 1,625 |
| 2 | November 23, 2015 05:15 | November 23, 2015 07:30 | 2h 15m | 2,173 | 4,306 |
| 3 | December 1, 2015 10:00 | December 1, 2015 13:00 | 3h | 1,124 | 1,801 |
| 4 | September 29, 2015 15:30 | September 29, 2015 16:45 | 1h 15m | 929 | 466 |
| 5 | September 7, 2015 04:00 | September 7, 2015 15:15 | 11h 15m | 887 | 2,310 |
| 6 | August 5, 2015 17:45 | August 6, 2015 00:15 | 6h 30m | 844 | 557 |
| 7 | August 23, 2015 12:30 | August 23, 2015 22:00 | 9h 30m | 764 | 1,404 |
| 8 | September 17, 2015 18:45 | September 17, 2015 23:45 | 5h | 750 | 1,302 |
| 9 | November 12, 2015 20:45 | November 12, 2015 23:45 | 3h | 707 | 180 |
| 10 | September 15, 2015 12:15 | September 15, 2015 16:00 | 3h 45m | 284 | 308 |
Outage episodes by size in 2015: 22 reached 100+ customers, 3 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 2015, 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 | 2015 | 2.2 hrs | 1.05 | 87 min | 0.88 |
| 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 2015; 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, 2015, 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/2015/iowa/black-hawk-county