Substation-Adjacent Datacenter Sites in Washington
Washington has 1,240 substation-adjacent datacenter candidate sites. Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
1,240
Substation-Adjacent sites
74.4/100
Avg score (top 25)
Washington
State
Substation-Adjacent
Type
Top substation-adjacent sites in Washington
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| SNO-KING | Substation-Adjacent | Kitsap County | 500 kV | 1,000 MW | 1.7 yrs | 77.1 |
| MONROE | Substation-Adjacent | Snohomish County | 500 kV | 1,000 MW | 1.7 yrs | 76.2 |
| TRANSALTA CENTRALIA GENERATION | Substation-Adjacent | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 76.1 |
| MAPLE VALLEY | Substation-Adjacent | King County | 500 kV | 1,000 MW | 1.7 yrs | 76.0 |
| TACOMA | Substation-Adjacent | Pierce County | 500 kV | 1,000 MW | 1.7 yrs | 75.6 |
| SNOHOMISH | Substation-Adjacent | Snohomish County | 345 kV | 600 MW | 1.7 yrs | 75.2 |
| COLUMBIA | Substation-Adjacent | Kittitas County | 500 kV | 1,000 MW | 1.7 yrs | 74.9 |
| TAP200917 | Substation-Adjacent | Snohomish County | 500 kV | 1,000 MW | 1.7 yrs | 74.7 |
| UNKNOWN206104 | Substation-Adjacent | Grant County | 230 kV | 300 MW | 1.7 yrs | 74.5 |
| CUSTER | Substation-Adjacent | San Juan County | 500 kV | 1,000 MW | 1.7 yrs | 74.4 |
| SACAJAWEA | Substation-Adjacent | Walla Walla County | 500 kV | 1,000 MW | 1.7 yrs | 74.4 |
| CELILO | Substation-Adjacent | Klickitat County | 1000 kV | 1,000 MW | 5.8 yrs | 74.3 |
| MCNARY | Substation-Adjacent | Benton County | 500 kV | 1,000 MW | 1.7 yrs | 74.3 |
| ROSS | Substation-Adjacent | Clark County | 345 kV | 600 MW | 1.7 yrs | 74.1 |
| TAP206102 | Substation-Adjacent | Grant County | 230 kV | 300 MW | 1.7 yrs | 74.1 |
| BOTHELL | Substation-Adjacent | Snohomish County | 230 kV | 300 MW | 1.7 yrs | 73.9 |
| PAUL | Substation-Adjacent | Thurston County | 500 kV | 1,000 MW | 1.7 yrs | 73.6 |
| TAP203128 | Substation-Adjacent | Walla Walla County | 500 kV | 1,000 MW | 1.7 yrs | 73.6 |
| COLUMBIA GENERATING STATION | Substation-Adjacent | Benton County | 500 kV | 1,000 MW | 1.7 yrs | 73.5 |
| WESTSIDE | Substation-Adjacent | Spokane County | 230 kV | 300 MW | 1.7 yrs | 73.4 |
| MASSACHUSETTS STREET | Substation-Adjacent | Kitsap County | 230 kV | 300 MW | 1.7 yrs | 73.4 |
| SEATTLE CITY EAST PINE | Substation-Adjacent | Kitsap County | 230 kV | 300 MW | 1.7 yrs | 73.3 |
| TAP206105 | Substation-Adjacent | Grant County | 230 kV | 300 MW | 1.7 yrs | 73.3 |
| BERRYDALE | Substation-Adjacent | King County | 230 kV | 300 MW | 1.7 yrs | 73.1 |
| UNKNOWN201377 | Substation-Adjacent | Grant County | 230 kV | 300 MW | 1.7 yrs | 73.0 |
- How many substation-adjacent datacenter sites are in Washington?
- GridCensus catalogs 1,240 substation-adjacent datacenter candidate sites in Washington.
- What is a substation-adjacent datacenter site?
- Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Dataset updated . Screening estimates derived from public data sources.
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This page shows a public slice of the GridCensus dataset for Substation-Adjacent sites in 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.