County annual report · FIPS 19021
2021 Buena Vista County, IA Power Outage Report
In 2021, customers in Buena Vista County, IA went without power for an average of 1.5 hours, a total of 18K customer-hours (Iowa average 2.7 hours). That ranks 80th worst of 99 Iowa counties and 2459th of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Buena Vista County, 2021
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 15, 2021 23:45 | December 18, 2021 00:00 | 2d | 1,145 | 6,857 |
| 2 | May 20, 2021 04:45 | May 20, 2021 05:30 | 45m | 858 | 487 |
| 3 | August 26, 2021 13:15 | August 26, 2021 18:00 | 4h 45m | 791 | 220 |
| 4 | August 28, 2021 12:45 | August 28, 2021 16:15 | 3h 30m | 642 | 971 |
| 5 | August 31, 2021 02:15 | August 31, 2021 16:00 | 13h 45m | 577 | 6,572 |
| 6 | February 17, 2021 13:45 | February 17, 2021 14:30 | 45m | 184 | 138 |
| 7 | December 20, 2021 23:15 | December 20, 2021 23:45 | 30m | 137 | 69 |
| 8 | September 24, 2021 14:15 | September 24, 2021 17:00 | 2h 45m | 114 | 186 |
| 9 | December 10, 2021 20:45 | December 11, 2021 01:00 | 4h 15m | 74 | 96 |
| 10 | May 1, 2021 19:00 | May 1, 2021 22:45 | 3h 45m | 71 | 68 |
Outage episodes by size in 2021: 8 reached 100+ customers, 1 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 Buena Vista County reported on EIA Form 861 for 2021, 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 | 2021 | 1.9 hrs | 1.04 | 75 min | 0.74 |
| Iowa Lakes Electric Coop | 2021 | 75 min | 0.84 | 65 min | 0.80 |
| Interstate Power and Light Co | - | - | - | - | - |
| Raccoon Valley Electric Cooperative | - | - | - | - | - |
| City of Alta - (IA) | - | - | - | - | - |
| City of Marathon - (IA) | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 11,607 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. Buena Vista County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Buena Vista County, IA annual power outage report, 2021, 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/2021/iowa/buena-vista-county