TAP171178
SubstationMinnesota · NORTHERN STATES POWER CO - MINNESOTA
At a glance
TAP171178 is an electric transmission substation in Minnesota, on NORTHERN STATES POWER CO - MINNESOTA's transmission network. It is classified as unclassified 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 |
|---|---|---|---|---|
| #173420 | — | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 7.9 mi |
| #173421 | — | — | IN SERVICE | 0.0 mi |
| #173422 | — | — | IN SERVICE | 7.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP171178, 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 |
|---|---|---|---|---|---|---|---|
| CEDAR MOUNTAIN | Substation-Adjacent | MN | Renville County | 345 kV | 600 MW | 4.3 yrs | 63.4 |
| PANTHER | Substation-Adjacent | MN | Renville County | 230 kV | 300 MW | 4.3 yrs | 61.4 |
| EC Near Sleepy Eye | Greenfield | MN | Brown | — | — | 4.3 yrs | 59.4 |
| EC Near Sleepy Eye | Greenfield | MN | Brown | — | — | 4.3 yrs | 58.7 |
| EC Near Sleepy Eye | Greenfield | MN | Brown | — | — | 4.3 yrs | 58.2 |
| OZ Redwood | Greenfield | MN | Redwood | — | — | 4.3 yrs | 58.2 |
| OZ Renville | Greenfield | MN | Renville | — | — | 4.3 yrs | 57.9 |
| EC Near Sleepy Eye | Greenfield | MN | Brown | — | — | 4.3 yrs | 57.8 |
Who owns the transmission lines at TAP171178?
The 3 connected lines listed above are owned by NORTHERN STATES POWER CO - MINNESOTA. Their combined recorded length is about 15.2 miles.
How do candidate sites near TAP171178 score?
The 8 highest-scoring candidate sites within about 25 miles range from 58 to 63 on the 0–100 DC Readiness scale. They fall in Renville County, Brown, Redwood, Renville. The Minnesota average across 3,216 scored sites is 55.7. 1,270 of those Minnesota sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP171178 substation?
3 transmission lines terminate at or pass through TAP171178 in the HIFLD line data. Together the listed lines cover about 15.2 miles.
Who owns TAP171178 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP171178 belong to NORTHERN STATES POWER CO - MINNESOTA. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP171178 substation located?
TAP171178 is in Minnesota at 44.6580, -95.0555. The datacenter candidate sites closest to it are in Renville County, Brown, Redwood.
Are there datacenter candidate sites near TAP171178 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP171178. The highest-scoring is CEDAR MOUNTAIN at 63/100. Across Minnesota, the average DC Readiness score is 55.7.
More in Minnesota
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, “TAP171178 substation, Minnesota”, https://gridcensus.com/substations/minnesota/tap171178-68a57224 (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 TAP171178 substation, Minnesota 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.