Former Mine Datacenter Sites in Washington
At a glance
Decommissioned or active mining land. Mine sites often retain heavy electrical service and water rights from prior operations, and many sit near coal-plant substations now freeing up grid capacity.
Top former mine sites in Washington
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 55.5 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 55.5 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 55.3 |
| Mine Site | Former Mine | Grant County | — | — | 3.5 yrs | 55.0 |
| Mine Site | Former Mine | King County | — | — | 3.5 yrs | 54.8 |
| Mine Site | Former Mine | Spokane County | — | — | 3.5 yrs | 54.6 |
| Mine Site | Former Mine | Grant County | — | — | 3.5 yrs | 54.5 |
| Mine Site | Former Mine | Yakima County | — | — | 3.5 yrs | 54.4 |
| Mine Site | Former Mine | Whatcom County | — | — | 3.5 yrs | 54.4 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 54.2 |
| Mine Site | Former Mine | Grant County | — | — | 3.5 yrs | 54.1 |
| Mine Site | Former Mine | Spokane County | — | — | 3.5 yrs | 54.1 |
| Mine Site | Former Mine | King County | — | — | 3.5 yrs | 53.9 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 53.9 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 53.8 |
| Mine Site | Former Mine | King County | — | — | 3.5 yrs | 53.8 |
| Mine Site | Former Mine | King County | — | — | 3.5 yrs | 53.8 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 53.7 |
| Mine Site | Former Mine | King County | — | — | 3.5 yrs | 53.7 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 53.7 |
| Mine Site | Former Mine | Snohomish County | — | — | 3.5 yrs | 53.6 |
| Mine Site | Former Mine | Spokane County | — | — | 3.5 yrs | 53.6 |
| Mine Site | Former Mine | Spokane County | — | — | 3.5 yrs | 53.6 |
| Mine Site | Former Mine | Spokane County | — | — | 3.5 yrs | 53.6 |
| Mine Site | Former Mine | King County | — | — | 3.5 yrs | 53.6 |
How does Washington compare with other states for former mine sites?
With 321 sites, Washington ranks 21st of the 50 states that have any former mine candidate sites. Kentucky leads with 5,049. Nationally, former mine sites average 49.7/100 DC Readiness, below 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 former mine sites in Washington?
The top 25 range from 55.5 to 53.6 on the 0–100 DC Readiness Score. They are concentrated in Snohomish County (9), King County (6), Spokane County (5) and Grant County (3). By grid region, 25 are in WECC.
County pages: Snohomish County · King County · Spokane County · Grant County
What power, fiber and flood exposure do these former mine sites have?
Their counties have a median of 11 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 6 km. The median interconnection-queue wait in their markets is 3.5 years. None of the 3 with a mapped FEMA flood zone sits in a high-risk (A or V) zone.
Frequently asked questions
How many former mine datacenter sites are in Washington?
GridCensus catalogs 321 former mine datacenter candidate sites in Washington, 1% of the national total for this type (21st of 50 states).
What is a former mine datacenter site?
Decommissioned or active mining land. Mine sites often retain heavy electrical service and water rights from prior operations, and many sit near coal-plant substations now freeing up grid capacity.
What is the best former mine datacenter site in Washington?
By DC Readiness Score, Mine Site in Snohomish County ranks first at 55.5/100, followed by Mine Site in Snohomish County at 55.5.
Which Washington counties have the best former mine sites?
The top 25 former mine sites in Washington are concentrated in Snohomish County (9), King County (6), Spokane County (5) and Grant County (3).
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 former mine sites and Washington
- All datacenter sites in Washington· 6,019 sites
- Former Mine datacenter sites nationwide· 26,205 sites
- Federal Excess sites in Washington· 3,676 sites
- Substation-Adjacent sites in Washington· 1,343 sites
- Industrial sites in Washington· 538 sites
- Greenfield sites in Washington· 133 sites
- Brownfield sites in Washington· 8 sites
Former Mine sites in other states
- Former Mine sites in Kentucky· 5,049 sites
- Former Mine sites in Pennsylvania· 3,356 sites
- Former Mine sites in West Virginia· 2,495 sites
- Former Mine sites in Virginia· 1,614 sites
- Former Mine sites in Alabama· 1,069 sites
- Former Mine sites in Texas· 935 sites
- Former Mine sites in Ohio· 925 sites
- Former Mine sites in Tennessee· 661 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, “Former Mine datacenter sites in Washington”, https://gridcensus.com/site-types/mine/washington (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for Former Mine 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.