WESTSIDE
SubstationWashington · AVISTA CORP
WESTSIDE is an electric transmission substation in Washington, operated by AVISTA CORP. 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 |
|---|---|---|---|---|
| #68105 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 77.2 mi |
| #68106 | 230 kV | BONNEVILLE POWER ADMINISTRATION | — | 9.6 mi |
| #71379 | 115 kV | AVISTA CORP | — | 4.5 mi |
| #71380 | 115 kV | AVISTA CORP | — | 4.0 mi |
| #71381 | 115 kV | AVISTA CORP | — | 2.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of WESTSIDE, 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 |
|---|---|---|---|---|---|---|---|
| WESTSIDE | Substation-Adjacent | WA | Spokane County | 230 kV | 300 MW | 1.7 yrs | 73.4 |
| UPRIVER DAM HYDRO PLANT | Substation-Adjacent | WA | Spokane County | 230 kV | 300 MW | 1.7 yrs | 71.8 |
| LANCASTER | Substation-Adjacent | WA | Spokane County | 230 kV | 300 MW | 1.7 yrs | 70.8 |
| BELL | Substation-Adjacent | WA | Spokane County | 500 kV | 1,000 MW | 1.7 yrs | 70.8 |
| UNKNOWN201468 | Substation-Adjacent | WA | Spokane County | 230 kV | 300 MW | 1.7 yrs | 70.3 |
| OTIS ORCHARDS | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 69.9 |
| COLLEGE AND WALNUT | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 69.7 |
| UNKNOWN205382 | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 69.4 |
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 WESTSIDE 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.