Brownfield Datacenter Sites in Washington
At a glance
Previously developed land with real or perceived environmental contamination. Brownfields trade remediation overhead for existing utility hookups, infill locations near fiber, and redevelopment incentives.
Top brownfield sites in Washington
| Site | Type | County | Former use | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| Wanapum | Brownfield | Grant County | hydro | 500 kV | 1,038 MW | 3.5 yrs | 68.2 |
| Randolph Road | Brownfield | Grant County | oil | — | 32 MW | 3.5 yrs | 63.2 |
| SPI - Everett | Brownfield | Snohomish | biomass | 115 kV | 28 MW | 3.5 yrs | 61.0 |
| University of Washington Power Plant | Brownfield | Kitsap County | gas | — | 5 MW | 3.5 yrs | 58.2 |
| Washington State University | Brownfield | Whitman County | coal | — | 2 MW | 3.5 yrs | 56.5 |
| Sullivan CR | Brownfield | Pend Oreille County | hydro | — | 9 MW | 3.5 yrs | 54.1 |
| Elwha Hydroelectric Project | Brownfield | Clallam County | hydro | — | 13 MW | 3.5 yrs | 48.0 |
| Glines Hydroelectric Project | Brownfield | Jefferson County | hydro | — | 16 MW | 3.5 yrs | 42.2 |
How does Washington compare with other states for brownfield sites?
With 8 sites, Washington ranks 30th of the 49 states that have any brownfield candidate sites. California leads with 103. Nationally, brownfield sites average 57.5/100 DC Readiness, above the 53.0 average across all site types. Across every site type, Washington averages 51.7, the 42nd-highest of 52 states, and its candidate sites face an average interconnection-queue wait of 3.5 years.
Where are the highest-scoring brownfield sites in Washington?
The top 8 range from 68.2 to 42.2 on the 0–100 DC Readiness Score. They are concentrated in Grant County (2). By grid region, 8 are in WECC.
County pages: Grant County · Snohomish · Kitsap County · Whitman County
What power, fiber and flood exposure do these brownfield sites have?
Of the top 8 brownfield sites in Washington, 2 have a recorded nearest-substation voltage, with a median of 308 kV; for 1 that substation is rated 230 kV or higher. Their counties have a median of 7 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 71 km. The median interconnection-queue wait in their markets is 3.5 years. 2 of the 7 with a mapped FEMA flood zone sit in a high-risk (A or V) zone.
Frequently asked questions
How many brownfield datacenter sites are in Washington?
GridCensus catalogs 8 brownfield datacenter candidate sites in Washington, 1% of the national total for this type (30th of 49 states).
What is a brownfield datacenter site?
Previously developed land with real or perceived environmental contamination. Brownfields trade remediation overhead for existing utility hookups, infill locations near fiber, and redevelopment incentives.
What is the best brownfield datacenter site in Washington?
By DC Readiness Score, Wanapum in Grant County ranks first at 68.2/100, followed by Randolph Road in Grant County at 63.2.
Which Washington counties have the best brownfield sites?
The top 8 brownfield sites in Washington are concentrated in Grant County (2).
How does Washington score for datacenters overall?
All 6,019 scored sites in Washington average 51.7/100 DC Readiness, the 42nd-highest of 52 states, against a national average of 53.0.
More on brownfield sites and Washington
- All datacenter sites in Washington· 6,019 sites
- Brownfield datacenter sites nationwide· 771 sites
- Federal Excess sites in Washington· 3,676 sites
- Substation-Adjacent sites in Washington· 1,343 sites
- Industrial sites in Washington· 538 sites
- Former Mine sites in Washington· 321 sites
- Greenfield sites in Washington· 133 sites
Brownfield sites in other states
- Brownfield sites in California· 103 sites
- Brownfield sites in New Jersey· 52 sites
- Brownfield sites in New York· 48 sites
- Brownfield sites in Massachusetts· 44 sites
- Brownfield sites in Iowa· 38 sites
- Brownfield sites in Illinois· 33 sites
- Brownfield sites in Texas· 30 sites
- Brownfield sites in Ohio· 29 sites
Dataset updated . Screening estimates derived from public data sources.
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Brownfield datacenter sites in Washington”, https://gridcensus.com/site-types/brownfield/washington (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for Brownfield sites in Washington is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.