NOXON
SubstationMontana · AVISTA CORP
NOXON is an electric transmission substation in Montana, operated by AVISTA CORP. It is classified as high-voltage (230 kv) and connects 9 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 |
|---|---|---|---|---|
| #68243 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 72.6 mi |
| #68266 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 70.1 mi |
| #68278 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 68.2 mi |
| #68479 | 230 kV | AVISTA CORP | — | 69.8 mi |
| #68480 | 230 kV | AVISTA CORP | — | 18.5 mi |
| #69467 | 230 kV | AVISTA CORP | — | 43.1 mi |
| #73456 | 230 kV | AVISTA CORP | — | 0.3 mi |
| #73457 | 230 kV | AVISTA CORP | — | 0.2 mi |
| #73458 | 230 kV | AVISTA CORP | — | 0.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of NOXON, 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 |
|---|---|---|---|---|---|---|---|
| NOXON | Substation-Adjacent | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 73.0 |
| Greenfield (TAFT - HOT SPRINGS) | Greenfield | MT | Sanders County | 500 kV | 1,000 MW | 1.1 yrs | 70.5 |
| Greenfield (NOXON - HOT SPRINGS) | Greenfield | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 68.2 |
| Greenfield (LANCASTER - NOXON) | Greenfield | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 67.8 |
| Greenfield (NOXON - CABINET GORGE) | Greenfield | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 67.8 |
| Greenfield (NOXON - HOT SPRINGS) | Greenfield | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 67.3 |
| Greenfield (NOXON - HOT SPRINGS) | Greenfield | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 67.2 |
| Greenfield (NOXON - HOT SPRINGS) | Greenfield | MT | Sanders County | 230 kV | 300 MW | 1.1 yrs | 67.1 |
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.
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This page shows a public slice of the GridCensus dataset for NOXON 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.