POST FALLS
SubstationWashington · AVISTA CORP
POST FALLS is an electric transmission substation in Washington, operated by AVISTA CORP. It is classified as sub-transmission (115 kv) and connects 1 transmission line. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #73557 | 115 kV | AVISTA CORP | — | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of POST FALLS, 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 |
|---|---|---|---|---|---|---|---|
| LANCASTER | Substation-Adjacent | ID | Kootenai County | 230 kV | 300 MW | 1.1 yrs | 79.2 |
| RATHDRUM POWER LLC | Substation-Adjacent | ID | Kootenai County | 230 kV | 300 MW | 2.0 yrs | 74.7 |
| Greenfield (LANCASTER - NOXON) | Greenfield | ID | Kootenai County | 230 kV | 300 MW | 1.1 yrs | 72.4 |
| UPRIVER DAM HYDRO PLANT | Substation-Adjacent | WA | Spokane County | 230 kV | 300 MW | 1.7 yrs | 71.8 |
| RATHDRUM | Substation-Adjacent | ID | Kootenai County | 230 kV | 300 MW | 1.7 yrs | 71.7 |
| Greenfield (LANCASTER - NOXON) | Greenfield | ID | Kootenai County | 230 kV | 300 MW | 1.1 yrs | 71.7 |
| TAP205408 | Substation-Adjacent | ID | Kootenai County | 138 kV | 100 MW | 1.7 yrs | 71.2 |
| BELL | Substation-Adjacent | WA | Spokane County | 500 kV | 1,000 MW | 1.7 yrs | 70.8 |
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 POST FALLS substation, Washington. 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.