WILMARTH
SubstationMinnesota · NORTHERN STATES POWER CO - MINNESOTA
WILMARTH is an electric transmission substation in Minnesota, operated by NORTHERN STATES POWER CO - MINNESOTA. It is classified as high-voltage (345 kv) and connects 7 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 |
|---|---|---|---|---|
| #44416 | 345 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 29.2 mi |
| #7259 | 345 kV | NORTHERN STATES POWER CO - MINNESOTA | — | 0.3 mi |
| #60109 | 345 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 24.8 mi |
| #47829 | 115 kV | NORTHERN STATES POWER CO - MINNESOTA | — | 0.4 mi |
| #41420 | 115 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 4.6 mi |
| #17406 | 115 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 4.6 mi |
| #4187 | 115 kV | NORTHERN STATES POWER CO - MINNESOTA | IN SERVICE | 16.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of WILMARTH, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN132021 | Substation-Adjacent | MN | Le Sueur County | 345 kV | 600 MW | 1.4 yrs | 75.1 |
| WILMARTH | Substation-Adjacent | MN | Blue Earth County | 345 kV | 600 MW | 1.4 yrs | 74.9 |
| UNKNOWN132584 | Substation-Adjacent | MN | Blue Earth County | 345 kV | 600 MW | 1.4 yrs | 72.6 |
| Greenfield (HELENA - CEDAR MOUNTAIN) | Greenfield | MN | Scott County | 345 kV | 600 MW | 1.4 yrs | 71.4 |
| UNKNOWN129662 | Substation-Adjacent | MN | Blue Earth County | 115 kV | 100 MW | 1.4 yrs | 69.6 |
| Greenfield (HELENA - CEDAR MOUNTAIN) | Greenfield | MN | Sibley County | 345 kV | 600 MW | 1.4 yrs | 69.1 |
| Greenfield (UNKNOWN132021 - WILMARTH) | Greenfield | MN | Le Sueur County | 345 kV | 600 MW | 1.4 yrs | 69.0 |
| TAP138573 | Substation-Adjacent | MN | Blue Earth County | 115 kV | 100 MW | 1.4 yrs | 68.5 |
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 WILMARTH 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.