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Datacenter Sites in Washington

Washington has 6,019 scored datacenter candidate sites averaging 51.7/100 DC Readiness. Federal Excess parcels lead the inventory (3,676 sites). Most sites interconnect through WECC. The state's candidate sites carry a catalogued aggregate of 198.4k MW and average a 3.5 yrs interconnection-queue wait.

At a glance

Washington has 6,019 scored datacenter candidate sites, the 6th-most of the 50 states, DC and Puerto Rico, averaging 51.7/100 DC Readiness against a national average of 53.0. Its average score ranks 42nd among states. The state also has 100 operating datacenters and 49 internet exchange facilities on record.

6,019
Candidate sites
51.7/100
Avg DC Readiness
198.4k MW
Catalogued capacity
theoretical aggregate
3.5 yrs
Avg queue wait
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≥ 7560–7540–60≤ 40
Top 25 in Washington

How does Washington compare with other states for datacenter sites?

By number of scored candidate sites, Washington ranks 6th of the 50 states, DC and Puerto Rico (6,019 of 147,272 nationally, 4.1%). Its average DC Readiness of 51.7/100 ranks 42nd and is roughly in line with the national average of 53.0. The average interconnection-queue wait at its sites, 3.5-year, is the 7th-shortest of the group (national 4.2-year).

Across the five headline sub-scores, Washington is strongest relative to the nation on natural hazard (71.0 vs 66.8 nationally) and weakest on water (63.7 vs 72.3). Power and speed to power carry 20% of the score each, fiber 12%, water 7% and hazard 6%.

Which counties in Washington have the most datacenter sites?

Grant County (1,518 sites, average 52.7), Stevens County (577 sites, average 47.4), and Ferry County (527 sites, average 47.1) hold the largest inventories. Together the top 3 account for 44% of the state's scored sites. Benton County has the highest average score among counties with at least 10 sites (57.1/100). 39 counties have five or more scored sites and their own county page.

What kinds of sites and grid regions are in Washington?

Federal Excess parcels are the largest category (3,676, 61%), followed by substation-adjacent (1,343) and industrial (538). Every scored site sits in the WECC region.

By site type

By grid region

Average sub-score profile

How Washington's candidate sites score on each DC Readiness dimension (0–100 average).

Power availability
36.5
Speed-to-power
49.7
Fiber
63.1
Water
63.7
Hazard resilience
71.0

Top 25 datacenter sites in Washington

Ranked by DC Readiness.

Top datacenter sites in Washington
SiteTypeCountyVoltageCapacityQueue waitScore
COLUMBIASubstation-AdjacentGrant County500 kV1,000 MW3.5 yrs69.1
MAPLE VALLEYSubstation-AdjacentKing County500 kV1,000 MW3.5 yrs68.4
WanapumBrownfieldGrant County500 kV1,038 MW3.5 yrs68.2
COVINGTONSubstation-AdjacentKing County500 kV1,000 MW3.5 yrs68.2
SNO-KINGSubstation-AdjacentKitsap County500 kV1,000 MW3.5 yrs68.2
TAP200917Substation-AdjacentSnohomish County500 kV1,000 MW3.5 yrs68.1
BELLSubstation-AdjacentSpokane County500 kV1,000 MW3.5 yrs68.0
MONROESubstation-AdjacentSnohomish County500 kV1,000 MW3.5 yrs67.8
UNKNOWN201455Substation-AdjacentThurston County500 kV1,000 MW3.5 yrs67.8
SACAJAWEASubstation-AdjacentWalla Walla County500 kV1,000 MW3.5 yrs67.4
ECHO LAKESubstation-AdjacentKing County500 kV1,000 MW3.5 yrs67.4
SICKLERSubstation-AdjacentChelan County500 kV1,000 MW3.5 yrs67.3
CUSTERSubstation-AdjacentSan Juan County500 kV1,000 MW3.5 yrs66.9
UNKNOWN206104Substation-AdjacentGrant County230 kV300 MW3.5 yrs66.6
RAVERSubstation-AdjacentKing County500 kV1,000 MW3.5 yrs66.6
UNKNOWN209155Substation-AdjacentGrant County230 kV300 MW3.5 yrs66.5
SNOHOMISHSubstation-AdjacentSnohomish County345 kV600 MW3.5 yrs66.5
TAP206230Substation-AdjacentKing County500 kV1,000 MW3.5 yrs66.3
LARSONSubstation-AdjacentGrant County230 kV300 MW3.5 yrs66.3
TAP206102Substation-AdjacentGrant County230 kV300 MW3.5 yrs66.3
COLUMBIA GENERATING STATIONSubstation-AdjacentBenton County500 kV1,000 MW3.5 yrs66.2
TAP206103Substation-AdjacentGrant County230 kV300 MW3.5 yrs66.2
TAP203128Substation-AdjacentWalla Walla County500 kV1,000 MW3.5 yrs65.9
VANTAGESubstation-AdjacentGrant County500 kV1,000 MW3.5 yrs65.6
OZ SpokaneGreenfieldSpokane——3.5 yrs65.4

Counties in Washington

39 counties with five or more scored sites.

Grant County1,518 · 52.7Stevens County577 · 47.4Ferry County527 · 47.1King County344 · 56.1Franklin County305 · 50.6Lincoln County252 · 48.4Kitsap County165 · 56.3Benton County161 · 57.1Pierce County160 · 57.1Kittitas County155 · 51.1Spokane County140 · 57.0Okanogan County125 · 48.1Snohomish County120 · 56.9Thurston County116 · 53.8Yakima County114 · 53.5Adams County97 · 50.9Clark County84 · 55.7Grays Harbor County75 · 51.2Whatcom County73 · 55.4Clallam County67 · 47.2Douglas County65 · 52.7Chelan County60 · 55.0Cowlitz County56 · 52.5Klickitat County55 · 54.1Island County52 · 54.4Lewis County47 · 53.3Skagit County47 · 52.3San Juan County43 · 55.3Walla Walla County43 · 56.0Whitman33 · 55.6Mason County29 · 53.2Skamania County28 · 50.3Pend Oreille24 · 54.8Jefferson County18 · 49.8Pacific County18 · 51.1Columbia County15 · 55.1Garfield County10 · 56.3Wahkiakum County8 · 56.8Asotin County5 · 52.1

Operating datacenters in Washington

100 operating datacenter facilities in Washington are on record, the 6th-most of any state. Seattle has the largest cluster (10 facilities). The operators with the most facilities here are Microsoft (12), Sabey (7), Sabey Data Centers (5). Footprints are recorded for 78 of them, totalling about 23.8 million square feet.

Seattle (10)

Quincy (8)

East Wenatchee (5)

Lynnwood (3)

Bothell (2)

Puyallup (2)

Bellevue (1)

Bellingham (1)

Federal Way (1)

Kennewick (1)

Kent (1)

Liberty Lake (1)

Moses Lake (1)

Spokane (1)

  • Lumen · Lumen Technologies

Tacoma (1)

Yakima (1)

City not recorded (50)

Internet exchange and peering facilities in Washington

49 peering and colocation facilities in Washington are listed in PeeringDB. Seattle has the most (18). The best-connected facility hosts 234 networks; the median facility in the state hosts 4 networks.

Quincy (3)

Bothell (2)

Spokane (2)

Bellevue (1)

Bellingham (1)

Federal Way (1)

Kennewick (1)

Kent (1)

Liberty Lake (1)

Lynnwood (1)

Moses Lake (1)

Redmond (1)

Yakima (1)

Washington datacenter site selection FAQ

How many datacenter sites are in Washington?

GridCensus catalogs 6,019 scored datacenter candidate sites in Washington, with an average DC Readiness score of 51.7/100. That is the 6th-largest inventory of the 50 states, DC and Puerto Rico.

How many operating datacenters are in Washington?

100 operating datacenter facilities in Washington are on record, the 6th-most of any state. Seattle has the most (10). Microsoft operates the most facilities in the state (12).

What is the average interconnection-queue wait in Washington?

Candidate sites in Washington average a 3.5-year interconnection-queue wait, with an average queue depth of 34 projects. The national average across all scored sites is 4.2-year, and Washington has the 7th-shortest average wait of the 50 states, DC and Puerto Rico.

Which county in Washington has the most datacenter sites?

Grant County has the most scored candidate sites in Washington (1,518), followed by Stevens County (577) and Ferry County (527). Among counties with at least 10 sites, Benton County has the highest average DC Readiness (57.1/100).

What kind of datacenter sites are most common in Washington?

Federal Excess sites are the most common category in Washington (3,676 sites, 61% of the inventory), and most sites fall within the WECC grid region.

How many internet exchange facilities are in Washington?

49 peering and colocation facilities listed in PeeringDB are in Washington. Seattle has the most (18). The best-connected one hosts 234 networks.

Looking for a specific record? The directory lists every scored datacenter site in Washington, A to Z.

More Washington infrastructure

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, “Datacenter candidate sites in Washington”, https://gridcensus.com/datacenter-sites/washington (data as of November 12, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for 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.

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