TAP139645
SubstationMinnesota · NORTHERN STATES POWER CO
TAP139645 is an electric transmission substation in Minnesota, operated by NORTHERN STATES POWER CO. It is classified as sub-transmission (138 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 & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #23399 | 161 kV | NORTHERN STATES POWER CO | IN SERVICE | 6.1 mi |
| #28360 | 161 kV | NORTHERN STATES POWER CO - WISCONSIN | IN SERVICE | 25.4 mi |
| #48679 | 161 kV | NORTHERN STATES POWER CO | IN SERVICE | 1.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP139645, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN139596 | Substation-Adjacent | WI | St. Croix County | 115 kV | 100 MW | 1.4 yrs | 69.9 |
| UNKNOWN163358 | Substation-Adjacent | WI | Dunn County | 161 kV | 100 MW | 1.4 yrs | 69.2 |
| UNKNOWN132588 | Substation-Adjacent | WI | St. Croix County | 161 kV | 100 MW | 1.4 yrs | 69.0 |
| TAP139645 | Substation-Adjacent | WI | St. Croix County | 161 kV | 100 MW | 1.4 yrs | 68.9 |
| APPLE RIVER | Substation-Adjacent | WI | Polk County | 161 kV | 100 MW | 1.4 yrs | 68.3 |
| Greenfield (UNKNOWN129869 - KING PLANT) | Greenfield | WI | Dunn County | 345 kV | 600 MW | 1.4 yrs | 67.8 |
| UNKNOWN131981 | Substation-Adjacent | WI | St. Croix County | 161 kV | 100 MW | 1.4 yrs | 67.3 |
| Greenfield (UNKNOWN129869 - KING PLANT) | Greenfield | WI | Pierce County | 345 kV | 600 MW | 1.4 yrs | 66.9 |
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
This page shows a public slice of the GridCensus dataset for TAP139645 substation, Minnesota. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.