County annual report · FIPS 46099
2023 Minnehaha County, SD Power Outage Report
In 2023, customers in Minnehaha County, SD went without power for an average of 1.8 hours, a total of 164K customer-hours (South Dakota average 2.3 hours). That ranks 38th worst of 61 South Dakota counties and 2374th of 2,977 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Minnehaha County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 13, 2023 14:15 | April 14, 2023 01:45 | 11h 30m | 16,994 | 6,868 |
| 2 | April 14, 2023 13:00 | May 11, 2023 04:45 | 26d 15h | 8,818 | 11K |
| 3 | August 23, 2023 11:45 | August 24, 2023 23:15 | 1d 11h | 8,652 | 6,067 |
| 4 | June 11, 2023 13:45 | June 21, 2023 18:00 | 10d 4h | 8,614 | 8,837 |
| 5 | April 6, 2023 14:00 | April 6, 2023 21:00 | 7h | 7,985 | 6,487 |
| 6 | August 5, 2023 20:45 | August 6, 2023 09:30 | 12h 45m | 7,150 | 14K |
| 7 | July 21, 2023 20:45 | July 21, 2023 23:30 | 2h 45m | 6,578 | 7,028 |
| 8 | July 25, 2023 13:15 | July 26, 2023 20:30 | 1d 7h | 5,740 | 8,785 |
| 9 | October 13, 2023 12:45 | October 19, 2023 00:30 | 5d 11h | 3,964 | 3,022 |
| 10 | June 26, 2023 22:15 | June 30, 2023 13:45 | 3d 15h | 3,054 | 11K |
Outage episodes by size in 2023: 50 reached 100+ customers, 18 reached 1,000+ customers, 1 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 2023, 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 | 2023 | 1.7 hrs | 0.86 | 74 min | 0.77 |
| Sioux Valley SW Elec Coop | 2023 | 60 min | 1.46 | 60 min | 1.46 |
| 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 n/a of South Dakota's customers in 2023; 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, 2023, 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/2023/south-dakota/minnehaha-county