County annual report · FIPS 46125
2018 Turner County, SD Power Outage Report
In 2018, customers in Turner County, SD went without power for an average of 0.6 hours, a total of 3,188 customer-hours (South Dakota average 1.1 hours). That ranks 12th worst of 30 South Dakota counties and 2449th of 2,798 nationally.
Compared with SD, the US and 2017
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Turner County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 18, 2018 12:30 | September 18, 2018 16:00 | 3h 30m | 473 | 1,184 |
| 2 | June 2, 2018 02:00 | June 2, 2018 10:45 | 8h 45m | 250 | 1,129 |
| 3 | October 22, 2018 16:45 | October 22, 2018 18:30 | 1h 45m | 57 | 100 |
| 4 | August 13, 2018 15:30 | August 13, 2018 18:30 | 3h | 18 | 50 |
| 5 | May 12, 2018 00:45 | May 12, 2018 03:00 | 2h 15m | 17 | 38 |
| 6 | August 4, 2018 04:15 | August 4, 2018 08:00 | 3h 45m | 10 | 20 |
| 7 | October 18, 2018 21:30 | October 22, 2018 11:30 | 3d 14h | 8 | 503 |
| 8 | April 14, 2018 04:45 | April 14, 2018 06:00 | 1h 15m | 7 | 7 |
| 9 | May 11, 2018 10:00 | May 11, 2018 12:00 | 2h | 5 | 9 |
| 10 | August 19, 2018 21:30 | August 20, 2018 00:15 | 2h 45m | 5 | 11 |
Outage episodes by size in 2018: 2 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 2018, 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 | 2018 | 90 min | 0.73 | 69 min | 0.62 |
| NorthWestern Energy - (SD) | 2018 | 1.9 hrs | 1.24 | 1.6 hrs | 1.13 |
| Sioux Valley SW Elec Coop | 2018 | 4.0 hrs | 3.62 | 2.0 hrs | 2.88 |
| 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 46% of South Dakota's customers in 2018; 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, 2018, 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/2018/south-dakota/turner-county