County annual report · FIPS 46125
2025 Turner County, SD Power Outage Report
In 2025, customers in Turner County, SD went without power for an average of 6.5 hours, a total of 33K customer-hours (South Dakota average 6.5 hours). That ranks 18th worst of 65 South Dakota counties and 1219th of 3,000 nationally.
Compared with SD, the US and 2024
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Turner County, 2025
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 30, 2025 01:15 | July 31, 2025 19:45 | 1d 18h | 983 | 7,434 |
| 2 | March 1, 2025 06:00 | March 1, 2025 09:30 | 3h 30m | 828 | 2,898 |
| 3 | June 12, 2025 01:15 | June 12, 2025 09:30 | 8h 15m | 701 | 1,612 |
| 4 | September 29, 2025 04:15 | September 29, 2025 10:00 | 5h 45m | 570 | 3,278 |
| 5 | December 31, 2025 18:15 | December 31, 2025 20:30 | 2h 15m | 484 | 848 |
| 6 | July 29, 2025 01:45 | July 30, 2025 00:15 | 22h 30m | 370 | 3,954 |
| 7 | June 17, 2025 16:15 | June 30, 2025 20:30 | 13d 4h | 233 | 1,792 |
| 8 | June 12, 2025 22:00 | June 12, 2025 22:15 | 15m | 215 | 54 |
| 9 | March 15, 2025 12:45 | March 15, 2025 13:15 | 30m | 134 | 36 |
| 10 | April 3, 2025 15:00 | April 3, 2025 16:15 | 1h 15m | 118 | 33 |
Outage episodes by size in 2025: 12 reached 100+ customers, 0 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 Turner County reported on EIA Form 861 for 2025, 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 |
| NorthWestern Energy - (SD) | 2024 | 76 min | 0.70 | 66 min | 0.65 |
| Sioux Valley SW Elec Coop | 2024 | 46 min | 0.92 | 46 min | 0.92 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| Clay-Union Electric Corp | - | - | - | - | - |
| City of Parker - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,964 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. Turner County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Turner County, SD annual power outage report, 2025, 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/2025/south-dakota/turner-county