MILES CITY
SubstationMontana · MONTANA-DAKOTA UTILITIES CO
MILES CITY is an electric transmission substation in Montana, operated by MONTANA-DAKOTA UTILITIES CO. It is classified as high-voltage (230 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 |
|---|---|---|---|---|
| #68442 | 230 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 37.3 mi |
| #68448 | 230 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 70.2 mi |
| #68451 | 230 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 75.6 mi |
| #70972 | 230 kV | MONTANA-DAKOTA UTILITIES CO | — | 0.3 mi |
| #76251 | 115 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 15.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MILES CITY, 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 |
|---|---|---|---|---|---|---|---|
| MILES CITY | Substation-Adjacent | MT | Custer County | 230 kV | 300 MW | 1.1 yrs | 74.8 |
| UNKNOWN206225 | Substation-Adjacent | MT | Custer County | 115 kV | 100 MW | 1.1 yrs | 72.4 |
| TAP208436 | Substation-Adjacent | MT | Prairie County | 115 kV | 100 MW | 1.1 yrs | 71.7 |
| TAP205543 | Substation-Adjacent | MT | Custer County | 115 kV | 100 MW | 1.1 yrs | 70.9 |
| TAP205547 | Substation-Adjacent | MT | Custer County | 115 kV | 100 MW | 1.1 yrs | 70.6 |
| TAP205544 | Substation-Adjacent | MT | Custer County | 115 kV | 100 MW | 1.1 yrs | 70.5 |
| TAP205542 | Substation-Adjacent | MT | Custer County | 115 kV | 100 MW | 1.1 yrs | 69.0 |
| UNKNOWN208435 | Substation-Adjacent | MT | Prairie County | 115 kV | 100 MW | 1.1 yrs | 68.9 |
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 MILES CITY substation, Montana. 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.