EC Near University of Washington Power Plant
GreenfieldKing County, Washington · WECC
At a glance
EC Near University of Washington Power Plant is a greenfield datacenter candidate site in King County, Washington, scoring 55.5/100 DC Readiness — 120th of 344 scored sites in the county. It sits in the WECC grid region and the CITY OF MILTON - (WA) service territory, where interconnection has averaged 3.5 years from request to operation.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Sales tax exemption on DC equipment and construction for eligible facilities; no state income tax.
Site location
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How does EC Near University of Washington Power Plant compare with other sites in King County?
EC Near University of Washington Power Plant ranks 120th of 344 scored candidate sites in King County. Its 55.5/100 is roughly in line with the county average of 56.1. It is roughly in line with the Washington average of 51.7 and roughly in line with the national average of 53.2.
Against the Washington average, its strongest sub-score is fiber connectivity (84 vs 63) and its weakest is natural hazard (47 vs 71). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is EC Near University of Washington Power Plant to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is Digital Fortress (SEA) at 4.5 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is CTI Biopharma, 4.5 miles away.
What are the flood, water and hazard risks at EC Near University of Washington Power Plant?
The site is in FEMA flood zone A, a Special Flood Hazard Area — land with at least a 1% annual chance of flooding. WRI rates baseline water stress at 1.80 on a 0–5 scale. Mapped wetlands (National Wetlands Inventory) are present on the parcel. At the county level, FEMA's National Risk Index rates King County "Relatively Moderate".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in King County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| MAPLE VALLEY | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 68.4 |
| COVINGTON | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 68.2 |
| ECHO LAKE | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 67.4 |
| RAVER | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 66.6 |
| TAP206230 | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 66.3 |
| OBRIEN | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 65.2 |
| OZ King | Greenfield | — | — | 3.5 yrs | 64.6 |
| SAMMAMISH | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 64.2 |
EC Near University of Washington Power Plant: common questions
What is the DC Readiness score of EC Near University of Washington Power Plant?
EC Near University of Washington Power Plant scores 55.5/100 on the GridCensus DC Readiness scale, rated good. It ranks 120th of 344 scored sites in King County. The King County average is 56.1 and the Washington average is 51.7.
Which electric utility serves EC Near University of Washington Power Plant?
CITY OF MILTON - (WA) (not available) holds the retail service territory that contains the site; its holding company is MILTON WA (CITY OF).
What grid region is EC Near University of Washington Power Plant in?
EC Near University of Washington Power Plant is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
Is EC Near University of Washington Power Plant in a flood zone?
The site is in FEMA flood zone A, a Special Flood Hazard Area — land with at least a 1% annual chance of flooding.
Who owns EC Near University of Washington Power Plant?
Parcel records list the owner as CITY OF SEATTLE - (WA) (private land).
How far is EC Near University of Washington Power Plant from an internet exchange?
The nearest internet exchange facility is Digital Fortress (SEA), about 4.5 miles away; 16 fiber providers report service at the location.
Related pages
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 October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “EC Near University of Washington Power Plant, King County, WA”, https://gridcensus.com/datacenter-sites/washington/king-county/ec-near-university-of-washington-power-plant-18c7b3c0 (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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