County annual report · FIPS 46099
2024 Minnehaha County, SD Power Outage Report
In 2024, customers in Minnehaha County, SD went without power for an average of 3.0 hours, a total of 279K customer-hours (South Dakota average 2.3 hours). That ranks 22nd worst of 65 South Dakota counties and 2095th of 2,990 nationally.
Compared with SD, the US and 2023
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Minnehaha County, 2024
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 25, 2024 15:45 | May 16, 2024 22:00 | 52d 6h | 12,418 | 29K |
| 2 | June 17, 2024 06:30 | June 18, 2024 02:30 | 20h | 11,079 | 40K |
| 3 | June 12, 2024 04:00 | June 12, 2024 05:30 | 1h 30m | 2,708 | 3,767 |
| 4 | June 18, 2024 09:15 | July 5, 2024 20:30 | 17d 11h | 2,707 | 16K |
| 5 | August 4, 2024 14:00 | August 4, 2024 20:15 | 6h 15m | 2,700 | 9,914 |
| 6 | March 24, 2024 22:30 | March 25, 2024 09:30 | 11h | 2,353 | 2,844 |
| 7 | July 29, 2024 15:30 | August 2, 2024 17:45 | 4d 2h | 2,310 | 8,929 |
| 8 | October 24, 2024 18:15 | November 4, 2024 15:30 | 10d 21h | 1,709 | 5,213 |
| 9 | January 1, 2024 00:00 | January 12, 2024 15:45 | 11d 15h | 1,596 | 17K |
| 10 | July 10, 2024 10:00 | July 18, 2024 19:15 | 8d 9h | 1,563 | 1,634 |
Outage episodes by size in 2024: 52 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 2024, 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 | 2024 | 2.6 hrs | 0.99 | 76 min | 0.80 |
| Sioux Valley SW Elec Coop | 2024 | 46 min | 0.92 | 46 min | 0.92 |
| 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 2024; 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, 2024, 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/2024/south-dakota/minnehaha-county