County annual report · FIPS 46125
2020 Turner County, SD Power Outage Report
In 2020, customers in Turner County, SD went without power for an average of 5.5 hours, a total of 27K customer-hours (South Dakota average 4.6 hours). That ranks 19th worst of 62 South Dakota counties and 1321st of 3,019 nationally.
Compared with SD, the US and 2019
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Turner County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 9, 2020 22:30 | June 10, 2020 06:00 | 7h 30m | 1,479 | 2,113 |
| 2 | March 2, 2020 20:30 | March 9, 2020 13:15 | 6d 16h | 1,183 | 2,929 |
| 3 | December 23, 2020 17:15 | December 28, 2020 15:15 | 4d 22h | 706 | 3,421 |
| 4 | January 22, 2020 17:15 | January 22, 2020 18:45 | 1h 30m | 683 | 1,025 |
| 5 | February 14, 2020 11:45 | February 14, 2020 14:30 | 2h 45m | 683 | 602 |
| 6 | April 4, 2020 16:15 | April 6, 2020 13:45 | 1d 21h | 564 | 681 |
| 7 | May 5, 2020 15:15 | May 11, 2020 14:30 | 5d 23h | 267 | 1,805 |
| 8 | June 19, 2020 09:15 | June 19, 2020 12:15 | 3h | 264 | 792 |
| 9 | April 23, 2020 21:30 | April 28, 2020 13:00 | 4d 15h | 234 | 372 |
| 10 | October 22, 2020 13:00 | October 22, 2020 21:15 | 8h 15m | 142 | 777 |
Outage episodes by size in 2020: 11 reached 100+ customers, 2 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 2020, 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 | 2020 | 1.7 hrs | 0.84 | 68 min | 0.71 |
| NorthWestern Energy - (SD) | 2020 | 2.6 hrs | 1.54 | 1.9 hrs | 1.28 |
| Sioux Valley SW Elec Coop | 2020 | 1.5 hrs | 2.73 | 83 min | 2.32 |
| 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 79% of South Dakota's customers in 2020; 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, 2020, 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/2020/south-dakota/turner-county