SUNSET
SubstationWashington · AVISTA CORP
SUNSET is an electric transmission substation in Washington, operated by AVISTA CORP. It is classified as sub-transmission (115 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #71359 | 115 kV | AVISTA CORP | — | 5.4 mi |
| #71364 | 115 kV | AVISTA CORP | — | 4.1 mi |
| #71365 | 115 kV | AVISTA CORP | — | 2.9 mi |
| #71366 | 115 kV | AVISTA CORP | — | 2.3 mi |
| #71367 | 115 kV | AVISTA CORP | — | 9.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SUNSET, 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 |
| 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 |
| LANCASTER | Substation-Adjacent | WA | Spokane County | 230 kV | 300 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 |
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 SUNSET 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.