Greenfield (STRATFORD - MCMILLAN)
GreenfieldMarathon County, Washington · MISO
At a glance
Greenfield (STRATFORD - MCMILLAN) is a greenfield datacenter candidate site in Marathon County, Washington, scoring 55.6/100 DC Readiness — 36th of 100 scored sites in the county. Its nearest substation is STRATFORD. It sits in the MISO grid region, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Enterprise Zone tax credits; TIF available for DC construction in eligible areas.
Site location
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How does Greenfield (STRATFORD - MCMILLAN) compare with other sites in Marathon County?
Greenfield (STRATFORD - MCMILLAN) ranks 36th of 100 scored candidate sites in Marathon County. Its 55.6/100 is roughly in line with the county average of 53.9. 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 water (94 vs 64) and its weakest is power availability (28 vs 37). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (STRATFORD - MCMILLAN) to power, fiber and other datacenters?
The nearest mapped substation, STRATFORD, is the closest grid connection point on record and operates at 115 kV. For connectivity, the nearest internet exchange facility is 901 Commerce Dr at 9.3 miles. 10 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is 901 Commerce Dr, 9.3 miles away.
What are the flood, water and hazard risks at Greenfield (STRATFORD - MCMILLAN)?
At the county level, FEMA's National Risk Index rates Marathon County "Relatively Low".
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 Marathon County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN133208 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 67.2 |
| GARDNER PARK | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.4 |
| EC Near Weston | Greenfield | — | — | 4.3 yrs | 61.5 |
| STRATFORD | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 60.7 |
| EC Near Domtar Paper Company Rothschild | Greenfield | — | — | 4.3 yrs | 60.5 |
| EC Near Weston | Greenfield | — | — | 4.3 yrs | 60.0 |
| EC Near Weston | Greenfield | — | — | 4.3 yrs | 59.4 |
| UNKNOWN171986 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
Greenfield (STRATFORD - MCMILLAN): common questions
What is the DC Readiness score of Greenfield (STRATFORD - MCMILLAN)?
Greenfield (STRATFORD - MCMILLAN) scores 55.6/100 on the GridCensus DC Readiness scale, rated good. It ranks 36th of 100 scored sites in Marathon County. The Marathon County average is 53.9 and the Washington average is 51.7.
What is the nearest substation to Greenfield (STRATFORD - MCMILLAN)?
The nearest mapped substation is STRATFORD, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
What grid region is Greenfield (STRATFORD - MCMILLAN) in?
Greenfield (STRATFORD - MCMILLAN) is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Greenfield (STRATFORD - MCMILLAN) from an internet exchange?
The nearest internet exchange facility is 901 Commerce Dr, about 9.3 miles away; 10 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, “Greenfield (STRATFORD - MCMILLAN), Marathon County, WA”, https://gridcensus.com/datacenter-sites/washington/marathon-county/greenfield-stratford-mcmillan-87f70e03 (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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