County annual report · FIPS 46099
2022 Minnehaha County, SD Power Outage Report
In 2022, customers in Minnehaha County, SD went without power for an average of 9.8 hours, a total of 905K customer-hours (South Dakota average 6.9 hours). That ranks 24th worst of 63 South Dakota counties and 744th 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 Minnehaha 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 | July 5, 2022 02:00 | August 25, 2022 19:00 | 51d 17h | 23,986 | 193K |
| 2 | May 12, 2022 13:15 | June 27, 2022 06:00 | 45d 16h | 16,409 | 511K |
| 3 | November 8, 2022 14:45 | November 30, 2022 20:15 | 22d 5h | 5,171 | 13K |
| 4 | March 16, 2022 07:00 | April 4, 2022 20:15 | 19d 13h | 2,790 | 10K |
| 5 | April 21, 2022 13:45 | April 27, 2022 00:15 | 5d 10h | 2,427 | 5,455 |
| 6 | January 21, 2022 14:30 | January 21, 2022 15:45 | 1h 15m | 2,045 | 512 |
| 7 | May 11, 2022 16:45 | May 12, 2022 02:30 | 9h 45m | 2,045 | 1,310 |
| 8 | January 13, 2022 14:00 | January 17, 2022 14:15 | 4d | 1,367 | 116K |
| 9 | January 11, 2022 15:30 | January 11, 2022 21:00 | 5h 30m | 1,360 | 710 |
| 10 | November 6, 2022 18:45 | November 6, 2022 21:15 | 2h 30m | 1,327 | 2,327 |
Outage episodes by size in 2022: 39 reached 100+ customers, 14 reached 1,000+ customers, 2 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 Minnehaha 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 |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | 2022 | 4.0 hrs | 1.08 | 72 min | 0.72 |
| Sioux Valley SW Elec Coop | 2022 | 11.5 hrs | 2.53 | 2.2 hrs | 1.66 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| City of Sioux Falls - (SD) | - | - | - | - | - |
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 ÷ 91,940 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. Minnehaha County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Minnehaha 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/minnehaha-county