DAWSON COUNTY
SubstationMontana · WAPA-- WESTERN AREA POWER ADMINISTRATION
DAWSON COUNTY is an electric transmission substation in Montana, operated by WAPA-- WESTERN AREA POWER ADMINISTRATION. It is classified as high-voltage (230 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 |
|---|---|---|---|---|
| #68443 | 230 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 105.1 mi |
| #68448 | 230 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 70.2 mi |
| #68449 | 230 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 71.6 mi |
| #69283 | 115 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 26.1 mi |
| #69287 | 115 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 2.8 mi |
| #69295 | 115 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 51.6 mi |
| #69296 | 115 kV | WAPA-- WESTERN AREA POWER ADMINISTRATION | — | 45.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DAWSON COUNTY, 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 |
|---|---|---|---|---|---|---|---|
| DAWSON COUNTY | Substation-Adjacent | MT | Dawson County | 230 kV | 300 MW | 1.1 yrs | 71.6 |
| UNKNOWN202277 | Substation-Adjacent | MT | Prairie County | 115 kV | 100 MW | 1.1 yrs | 71.5 |
| GLENDIVE GT | Substation-Adjacent | MT | Dawson County | 115 kV | 100 MW | 1.1 yrs | 69.0 |
| Greenfield (DAWSON COUNTY - MILES CITY) | Greenfield | MT | Prairie County | 230 kV | 300 MW | 1.1 yrs | 68.7 |
| Greenfield (DAWSON COUNTY - TAP205535) | Greenfield | MT | Wibaux County | 230 kV | 300 MW | 1.1 yrs | 67.6 |
| Greenfield (DAWSON COUNTY - TAP205535) | Greenfield | MT | Wibaux County | 230 kV | 300 MW | 1.1 yrs | 67.2 |
| Greenfield (DAWSON COUNTY - TAP205535) | Greenfield | MT | Dawson County | 230 kV | 300 MW | 1.1 yrs | 67.0 |
| Greenfield (DAWSON COUNTY - TAP205535) | Greenfield | MT | Dawson County | 230 kV | 300 MW | 1.1 yrs | 66.5 |
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 DAWSON COUNTY 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.