BLACK HILLS POWER
SubstationSouth Dakota · BLACK HILLS POWER, INC. D/B/A
At a glance
BLACK HILLS POWER is an electric transmission substation in South Dakota, on BLACK HILLS POWER, INC. D/B/A'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 |
|---|---|---|---|---|
| #118220 | 69 kV | BLACK HILLS POWER, INC. D/B/A | IN SERVICE | 4.6 mi |
| #162581 | 69 kV | BLACK HILLS POWER, INC. D/B/A | IN SERVICE | 0.5 mi |
| #120931 | — | BLACK HILLS POWER, INC. D/B/A | IN SERVICE | 8.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BLACK HILLS POWER, 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 |
|---|---|---|---|---|---|---|---|
| EC Coal Pennington County | Greenfield | SD | Pennington County | — | — | 4.3 yrs | 63.0 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 4.3 yrs | 61.5 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 4.3 yrs | 61.3 |
| LOOKOUT | Substation-Adjacent | SD | Lawrence County | 230 kV | 300 MW | 4.3 yrs | 61.2 |
| YELLOW CREEK | Substation-Adjacent | SD | Lawrence County | 230 kV | 300 MW | 4.3 yrs | 61.1 |
| EC Coal Meade County | Greenfield | SD | Meade County | — | — | 4.3 yrs | 60.7 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 4.3 yrs | 60.3 |
| UNKNOWN131366 | Substation-Adjacent | SD | Custer County | 69 kV | 50 MW | 4.3 yrs | 60.3 |
How does BLACK HILLS POWER compare with other substations in South Dakota?
South Dakota has 970 substation records in HIFLD, of which 40 carry a station name; the rest are unnamed tap points, risers and line ends. 3 named substations in the state are in BLACK HILLS POWER's 69–114 kV band (8% of named stations). 36 sit in a higher band. 6 named substations in South Dakota operate at 345 kV or above. The highest voltage recorded in the state is 345 kV, and the state median is 230 kV.
Who owns the transmission lines at BLACK HILLS POWER?
The 3 connected lines listed above are owned by BLACK HILLS POWER, INC. D/B/A. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 13.3 miles.
How do candidate sites near BLACK HILLS POWER score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 63 on the 0–100 DC Readiness scale. They fall in Pennington County, Pennington, Lawrence County, Meade 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 BLACK HILLS POWER substation?
BLACK HILLS POWER 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 BLACK HILLS POWER is below the national midpoint.
How many transmission lines connect to BLACK HILLS POWER substation?
3 transmission lines terminate at or pass through BLACK HILLS POWER in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 13.3 miles.
Who owns BLACK HILLS POWER substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at BLACK HILLS POWER belong to BLACK HILLS POWER, INC. D/B/A. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is BLACK HILLS POWER substation located?
BLACK HILLS POWER is in South Dakota at 44.3590, -103.7386. The datacenter candidate sites closest to it are in Pennington County, Pennington, Lawrence County.
Are there datacenter candidate sites near BLACK HILLS POWER substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of BLACK HILLS POWER. The highest-scoring is EC Coal Pennington County at 63/100. Across South Dakota, the average DC Readiness score is 54.7.
Other 69 kV substations 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, “BLACK HILLS POWER substation, South Dakota”, https://gridcensus.com/substations/south-dakota/black-hills-power-ec28a7f6 (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 BLACK HILLS POWER 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.