BUNKER HILL
SubstationMinnesota · AMERICAN TRANSMISSION CO
BUNKER HILL is an electric transmission substation in Minnesota, operated by AMERICAN TRANSMISSION CO. It is classified as sub-transmission (115 kv) and connects 2 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 |
|---|---|---|---|---|
| #17774 | 115 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 19.5 mi |
| #38009 | 115 kV | NORTHERN STATES POWER CO - WISCONSIN | IN SERVICE | 10.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BUNKER HILL, 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 |
|---|---|---|---|---|---|---|---|
| WESTON | Substation-Adjacent | WI | Marathon County | 345 kV | 600 MW | 1.4 yrs | 77.4 |
| GARDNER PARK | Substation-Adjacent | WI | Marathon County | 345 kV | 600 MW | 1.4 yrs | 73.9 |
| CASSEL | Substation-Adjacent | WI | Marathon County | 115 kV | 100 MW | 1.4 yrs | 69.9 |
| WHITCOMB | Substation-Adjacent | WI | Marathon County | 115 kV | 100 MW | 1.4 yrs | 69.2 |
| SHERMAN ST | Substation-Adjacent | WI | Marathon County | 115 kV | 100 MW | 1.4 yrs | 69.2 |
| Greenfield (STONE LAKE - GARDNER PARK) | Greenfield | WI | Marathon County | 345 kV | 600 MW | 1.4 yrs | 69.0 |
| PINE (WPS) | Substation-Adjacent | WI | Lincoln County | 115 kV | 100 MW | 1.4 yrs | 67.5 |
| Greenfield (STONE LAKE - GARDNER PARK) | Greenfield | WI | Marathon County | 345 kV | 600 MW | 1.4 yrs | 65.7 |
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 BUNKER HILL 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.