County annual report · FIPS 46135
2022 Yankton County, SD Power Outage Report
In 2022, customers in Yankton County, SD went without power for an average of 1.6 hours, a total of 19K customer-hours (South Dakota average 6.9 hours). That ranks 53rd worst of 63 South Dakota counties and 2479th of 2,976 nationally.
Compared with SD, the US and 2021
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Yankton County, 2022
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 5, 2022 23:00 | March 6, 2022 01:00 | 2h | 3,235 | 6,141 |
| 2 | May 12, 2022 21:30 | May 14, 2022 00:15 | 1d 2h | 487 | 2,426 |
| 3 | October 6, 2022 20:00 | October 6, 2022 23:15 | 3h 15m | 424 | 847 |
| 4 | December 13, 2022 15:45 | December 13, 2022 17:45 | 2h | 423 | 845 |
| 5 | June 4, 2022 14:45 | June 4, 2022 17:45 | 3h | 320 | 960 |
| 6 | September 10, 2022 00:00 | September 10, 2022 04:00 | 4h | 319 | 688 |
| 7 | July 5, 2022 20:30 | July 6, 2022 02:00 | 5h 30m | 315 | 367 |
| 8 | April 3, 2022 22:15 | April 4, 2022 01:15 | 3h | 162 | 486 |
| 9 | September 7, 2022 05:45 | September 7, 2022 10:30 | 4h 45m | 103 | 254 |
| 10 | November 11, 2022 07:45 | November 11, 2022 09:45 | 2h | 75 | 150 |
Outage episodes by size in 2022: 9 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 Yankton County reported on EIA Form 861 for 2022, 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 |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2022 | 2.1 hrs | 1.26 | 80 min | 1.01 |
| Bon Homme Yankton El Assn, Inc | 2018 | 34 min | 0.32 | 34 min | 0.32 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| Clay-Union Electric Corp | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of South Dakota's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 11,940 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. Yankton County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Yankton County, SD annual power outage report, 2022, 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/2022/south-dakota/yankton-county