ARPIN
SubstationMinnesota · AMERICAN TRANSMISSION CO
ARPIN is an electric transmission substation in Minnesota, operated by AMERICAN TRANSMISSION CO. It is classified as high-voltage (345 kv) and connects 5 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 |
|---|---|---|---|---|
| #34881 | 345 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 20.1 mi |
| #37441 | 345 kV | NORTHERN STATES POWER CO - WISCONSIN | IN SERVICE | 79.9 mi |
| #64141 | 345 kV | — | — | 0.0 mi |
| #3569 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 5.3 mi |
| #22239 | 115 kV | — | IN SERVICE | 12.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ARPIN, 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 |
|---|---|---|---|---|---|---|---|
| HUME | Substation-Adjacent | WI | Wood County | 115 kV | 100 MW | 1.4 yrs | 75.6 |
| MARSHFIELD UTILITIES GAS PLANT | Substation-Adjacent | WI | Wood County | 115 kV | 100 MW | 1.4 yrs | 72.8 |
| ARPIN | Substation-Adjacent | WI | Wood County | 345 kV | 600 MW | 1.4 yrs | 72.7 |
| Greenfield (UNKNOWN129869 - ARPIN) | Greenfield | WI | Wood County | 345 kV | 600 MW | 1.4 yrs | 72.6 |
| SIGEL | Substation-Adjacent | WI | Wood County | 138 kV | 100 MW | 1.4 yrs | 71.3 |
| SAND LAKE | Substation-Adjacent | WI | Wood County | 138 kV | 100 MW | 1.4 yrs | 70.7 |
| WILDWOOD (MEWD) | Substation-Adjacent | WI | Wood County | 115 kV | 100 MW | 1.4 yrs | 70.2 |
| CASSEL | Substation-Adjacent | WI | Marathon County | 115 kV | 100 MW | 1.4 yrs | 69.9 |
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 ARPIN 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.