TAP167858
SubstationSouth Dakota · WAPA-- WESTERN AREA POWER ADMINISTRATION
At a glance
TAP167858 is an electric transmission substation in South Dakota, on WAPA-- WESTERN AREA POWER ADMINISTRATION'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
Ownership
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #165945 | 69 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | IN SERVICE | 7.8 mi |
| #168937 | 69 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | IN SERVICE | 2.0 mi |
| #168938 | 69 kV | — | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP167858, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN131330 | Substation-Adjacent | SD | Union County | 230 kV | 300 MW | 4.3 yrs | 64.0 |
| OZ Clay | Greenfield | SD | Clay | — | — | 4.3 yrs | 62.2 |
| UNKNOWN131256 | Substation-Adjacent | SD | Clay County | 69 kV | 50 MW | 4.3 yrs | 60.6 |
| UNKNOWN131257 | Substation-Adjacent | SD | Clay County | 115 kV | 100 MW | 4.3 yrs | 60.4 |
| UNKNOWN133793 | Substation-Adjacent | SD | Clay County | 115 kV | 100 MW | 4.3 yrs | 60.4 |
| TAP159315 | Substation-Adjacent | SD | Clay County | 69 kV | 50 MW | 4.3 yrs | 60.3 |
| UNKNOWN133792 | Substation-Adjacent | SD | Clay County | 69 kV | 50 MW | 4.3 yrs | 59.8 |
| TAP167963 | Substation-Adjacent | SD | Union County | 69 kV | 50 MW | 4.3 yrs | 59.7 |
Who owns the transmission lines at TAP167858?
The 3 connected lines listed above are owned by WAPA-- WESTERN AREA POWER ADMINISTRATION. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 9.8 miles.
How do candidate sites near TAP167858 score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 64 on the 0–100 DC Readiness scale. They fall in Union County, Clay, Clay 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 TAP167858 substation?
TAP167858 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 TAP167858 is below the national midpoint.
How many transmission lines connect to TAP167858 substation?
3 transmission lines terminate at or pass through TAP167858 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 9.8 miles.
Who owns TAP167858 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP167858 belong to WAPA-- WESTERN AREA POWER ADMINISTRATION. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP167858 substation located?
TAP167858 is in South Dakota at 42.7935, -96.9291. The datacenter candidate sites closest to it are in Union County, Clay, Clay County.
Are there datacenter candidate sites near TAP167858 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP167858. The highest-scoring is UNKNOWN131330 at 64/100. 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, “TAP167858 substation, South Dakota”, https://gridcensus.com/substations/south-dakota/tap167858-c46e6b68 (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 TAP167858 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.