TAP167770
SubstationSouth Dakota · OTTER TAIL POWER CO
At a glance
TAP167770 is an electric transmission substation in South Dakota, on OTTER TAIL POWER CO's transmission network. It is classified as distribution (69–115 kv) and connects 3 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #168820 | 69 kV | OTTER TAIL POWER CO | IN SERVICE | 2.0 mi |
| #168821 | 69 kV | OTTER TAIL POWER CO | IN SERVICE | 3.5 mi |
| #168826 | 69 kV | OTTER TAIL POWER CO | IN SERVICE | 7.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP167770, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| VT HANLON | Substation-Adjacent | SD | McCook County | 230 kV | 300 MW | 4.3 yrs | 63.4 |
| EC Near Pathfinder | Greenfield | SD | Minnehaha | — | — | 4.3 yrs | 61.1 |
| EC Near Lake Preston | Greenfield | SD | Kingsbury | — | — | 4.3 yrs | 60.3 |
| EC Near Lake Preston | Greenfield | SD | Kingsbury | — | — | 4.3 yrs | 60.1 |
| Lake Preston | Brownfield | SD | Kingsbury County | — | 24 MW | 4.3 yrs | 60.0 |
| EC Near Lake Preston | Greenfield | SD | Kingsbury | — | — | 4.3 yrs | 59.4 |
| EC Near Lake Preston | Greenfield | SD | Kingsbury | — | — | 4.3 yrs | 59.3 |
| TAP159698 | Substation-Adjacent | SD | Minnehaha County | 69 kV | 50 MW | 4.3 yrs | 59.1 |
Who owns the transmission lines at TAP167770?
The 3 connected lines listed above are owned by OTTER TAIL POWER CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 12.5 miles.
How do candidate sites near TAP167770 score?
The 8 highest-scoring candidate sites within about 25 miles range from 59 to 63 on the 0–100 DC Readiness scale. They fall in McCook County, Minnehaha, Kingsbury, Kingsbury County. The South Dakota average across 1,151 scored sites is 54.7. 477 of those South Dakota sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP167770 substation?
TAP167770 has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so TAP167770 is below the national midpoint.
How many transmission lines connect to TAP167770 substation?
3 transmission lines terminate at or pass through TAP167770 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 12.5 miles.
Who owns TAP167770 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP167770 belong to OTTER TAIL POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP167770 substation located?
TAP167770 is in South Dakota at 44.0439, -97.0692. The datacenter candidate sites closest to it are in McCook County, Minnehaha, Kingsbury.
Are there datacenter candidate sites near TAP167770 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP167770. The highest-scoring is VT HANLON at 63/100. Across South Dakota, the average DC Readiness score is 54.7.
More in South Dakota
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “TAP167770 substation, South Dakota”, https://gridcensus.com/substations/south-dakota/tap167770-e7039994 (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
Every site and score for TAP167770 substation, South Dakota is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.