TAP138588
SubstationMinnesota · NORTHERN STATES POWER CO - MINNESOTA
At a glance
TAP138588 is an electric transmission substation in Minnesota, on NORTHERN STATES POWER CO - MINNESOTA'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 |
|---|---|---|---|---|
| #108202 | 69 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 0.6 mi |
| #144338 | 69 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 5.1 mi |
| #148782 | 69 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 2.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP138588, 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 |
|---|---|---|---|---|---|---|---|
| CHUB LAKE | Substation-Adjacent | MN | Scott County | 345 kV | 600 MW | 4.3 yrs | 67.1 |
| HAMPTON | Substation-Adjacent | MN | Dakota County | 345 kV | 600 MW | 4.3 yrs | 66.4 |
| EC Near West Group Data Center F | Greenfield | MN | Dakota | — | — | 4.3 yrs | 64.7 |
| OZ Waseca | Greenfield | MN | Waseca | — | — | 4.3 yrs | 64.5 |
| UNKNOWN129423 | Substation-Adjacent | MN | Steele County | 161 kV | 100 MW | 4.3 yrs | 64.4 |
| EC Near Owatonna | Greenfield | MN | Steele | — | — | 4.3 yrs | 64.1 |
| EC Near Montgomery | Greenfield | MN | Le Sueur | — | — | 4.3 yrs | 63.6 |
| EC Near Owatonna | Greenfield | MN | Steele | — | — | 4.3 yrs | 63.5 |
Who owns the transmission lines at TAP138588?
The 3 connected lines listed above are owned by NORTHERN STATES POWER CO - MINNESOTA. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 8.2 miles.
How do candidate sites near TAP138588 score?
The 8 highest-scoring candidate sites within about 25 miles range from 64 to 67 on the 0–100 DC Readiness scale. They fall in Scott County, Dakota County, Dakota, Waseca. 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
What voltage is TAP138588 substation?
TAP138588 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 TAP138588 is below the national midpoint.
How many transmission lines connect to TAP138588 substation?
3 transmission lines terminate at or pass through TAP138588 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 8.2 miles.
Who owns TAP138588 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP138588 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 TAP138588 substation located?
TAP138588 is in Minnesota at 44.3705, -93.2536. The datacenter candidate sites closest to it are in Scott County, Dakota County, Dakota.
Are there datacenter candidate sites near TAP138588 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP138588. The highest-scoring is CHUB LAKE at 67/100. 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, “TAP138588 substation, Minnesota”, https://gridcensus.com/substations/minnesota/tap138588-4c7cfa62 (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 TAP138588 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.