Greenfield (HILLTOP (WPS) - GARDNER PARK)
GreenfieldMarathon County, Wisconsin · MISO
At a glance
Greenfield (HILLTOP (WPS) - GARDNER PARK) is a greenfield datacenter candidate site in Marathon County, Wisconsin, scoring 51.7/100 DC Readiness — 78th of 100 scored sites in the county. Its nearest substation is HILLTOP (WPS). It sits in the MISO grid region and the WISCONSIN PUBLIC SERVICE CORP service territory, 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 (HILLTOP (WPS) - GARDNER PARK) compare with other sites in Marathon County?
Greenfield (HILLTOP (WPS) - GARDNER PARK) ranks 78th of 100 scored candidate sites in Marathon County. Its 51.7/100 is roughly in line with the county average of 53.9. It is roughly in line with the Wisconsin average of 55.4 and roughly in line with the national average of 53.2.
Against the Wisconsin average, its strongest sub-score is natural hazard (78 vs 77) and its weakest is power availability (28 vs 38). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (HILLTOP (WPS) - GARDNER PARK) to power, fiber and other datacenters?
The nearest mapped substation, HILLTOP (WPS), is the closest grid connection point on record and operates at 115 kV. The nearest located transmission bottleneck is NSPALW02_NORTHPRT_NORTHWILMA11_1_1 (MISO), 26 miles away. For connectivity, the nearest internet exchange facility is 901 Commerce Dr at 31.9 miles. 10 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is 901 Commerce Dr, 31.9 miles away.
What are the flood, water and hazard risks at Greenfield (HILLTOP (WPS) - GARDNER PARK)?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk). 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 (HILLTOP (WPS) - GARDNER PARK): common questions
What is the DC Readiness score of Greenfield (HILLTOP (WPS) - GARDNER PARK)?
Greenfield (HILLTOP (WPS) - GARDNER PARK) scores 51.7/100 on the GridCensus DC Readiness scale, rated fair. It ranks 78th of 100 scored sites in Marathon County. The Marathon County average is 53.9 and the Wisconsin average is 55.4.
What is the nearest substation to Greenfield (HILLTOP (WPS) - GARDNER PARK)?
The nearest mapped substation is HILLTOP (WPS), at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves Greenfield (HILLTOP (WPS) - GARDNER PARK)?
WISCONSIN PUBLIC SERVICE CORP (investor owned) holds the retail service territory that contains the site; its holding company is INTEGRYS ENERGY GROUP.
What grid region is Greenfield (HILLTOP (WPS) - GARDNER PARK) in?
Greenfield (HILLTOP (WPS) - GARDNER PARK) is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
Is Greenfield (HILLTOP (WPS) - GARDNER PARK) in a flood zone?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk).
How far is Greenfield (HILLTOP (WPS) - GARDNER PARK) from an internet exchange?
The nearest internet exchange facility is 901 Commerce Dr, about 31.9 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 (HILLTOP (WPS) - GARDNER PARK), Marathon County, WI”, https://gridcensus.com/datacenter-sites/wisconsin/marathon-county/greenfield-hilltop-wps-gardner-park-181eeff8 (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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Every site and score for Greenfield (HILLTOP (WPS) - GARDNER PARK), Marathon County 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.