ROSALIA
SubstationWashington · AVISTA CORP
ROSALIA 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #70475 | 230 kV | AVISTA CORP | — | 27.9 mi |
| #70610 | 230 kV | AVISTA CORP | — | 32.2 mi |
| #72808 | 138 kV | AVISTA CORP | — | 3.9 mi |
| #70612 | 115 kV | AVISTA CORP | — | 24.7 mi |
| #71358 | 115 kV | AVISTA CORP | — | 13.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ROSALIA, 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 |
|---|---|---|---|---|---|---|---|
| ROSALIA | Substation-Adjacent | WA | Whitman County | 230 kV | 300 MW | 1.7 yrs | 68.6 |
| UNKNOWN205397 | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 68.3 |
| TAP205400 | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 68.2 |
| TAP205373 | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 68.0 |
| HAYFORD | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 68.0 |
| TAP200915 | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 67.8 |
| UNKNOWN202419 | Substation-Adjacent | WA | Spokane County | 115 kV | 100 MW | 1.7 yrs | 67.7 |
| TAP204924 | Substation-Adjacent | ID | Benewah County | 230 kV | 300 MW | 1.7 yrs | 67.3 |
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 ROSALIA 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.