Greenfield Datacenter Sites in Wisconsin
At a glance
Undeveloped land with no prior industrial use. Greenfield parcels offer maximum design flexibility and large contiguous footprints, but typically require full utility build-out — the speed-to-power story hinges on proximity to existing transmission.
Top greenfield sites in Wisconsin
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| EC Near MMSD Jones Island Wastewater | Greenfield | Milwaukee | — | — | 4.3 yrs | 65.1 |
| OZ Dane | Greenfield | Dane | — | — | 4.3 yrs | 64.9 |
| EC Near Kimberly Mill | Greenfield | Outagamie | — | — | 4.3 yrs | 64.8 |
| EC Near Oneida Casino | Greenfield | Brown | — | — | 4.3 yrs | 64.7 |
| EC Near Blount Street | Greenfield | Dane | — | — | 4.3 yrs | 64.5 |
| OZ Dane | Greenfield | Dane | — | — | 4.3 yrs | 64.4 |
| EC Near Winnebago County Landfill Gas | Greenfield | Winnebago | — | — | 4.3 yrs | 64.4 |
| EC Near South Oak Creek | Greenfield | Milwaukee | — | — | 4.3 yrs | 64.2 |
| OZ Dane | Greenfield | Dane | — | — | 4.3 yrs | 64.2 |
| OZ Dane | Greenfield | Dane | — | — | 4.3 yrs | 64.2 |
| EC Near Omega Hills Gas Recovery | Greenfield | Washington | — | — | 4.3 yrs | 64.2 |
| EC Near Oneida Casino | Greenfield | Brown | — | — | 4.3 yrs | 63.9 |
| EC Coal Milwaukee County | Greenfield | Milwaukee County | — | — | 4.3 yrs | 63.7 |
| EC Near Blount Street | Greenfield | Dane | — | — | 4.3 yrs | 63.7 |
| EC Near MMSD Jones Island Wastewater | Greenfield | Milwaukee | — | — | 4.3 yrs | 63.5 |
| EC Near Pleasant Prairie | Greenfield | Kenosha | — | — | 4.3 yrs | 63.5 |
| EC Near Blount Street | Greenfield | Dane | — | — | 4.3 yrs | 63.3 |
| EC Coal Kenosha County | Greenfield | Kenosha County | — | — | 4.3 yrs | 63.3 |
| Greenfield (UNKNOWN129869 - ARPIN) | Greenfield | Wood County | 345 kV | 600 MW | 4.3 yrs | 63.3 |
| EC Near Omega Hills Gas Recovery | Greenfield | Washington | — | — | 4.3 yrs | 63.2 |
| EC Near Winnebago County Landfill Gas | Greenfield | Winnebago | — | — | 4.3 yrs | 63.2 |
| EC Near Pleasant Prairie | Greenfield | Kenosha | — | — | 4.3 yrs | 63.1 |
| EC Near Sheepskin | Greenfield | Rock | — | — | 4.3 yrs | 62.9 |
| EC Near WPPI Hartford DG | Greenfield | Washington | — | — | 4.3 yrs | 62.9 |
| OZ Milwaukee | Greenfield | Milwaukee | — | — | 4.3 yrs | 62.9 |
How does Wisconsin compare with other states for greenfield sites?
With 465 sites, Wisconsin ranks 15th of the 51 states that have any greenfield candidate sites. Texas leads with 1,276. Nationally, greenfield sites average 55.3/100 DC Readiness, above the 53.0 average across all site types. Across every site type, Wisconsin averages 55.4, the 14th-highest of 52 states, and its candidate sites face an average interconnection-queue wait of 4.3 years.
Where are the highest-scoring greenfield sites in Wisconsin?
The top 25 range from 65.1 to 62.9 on the 0–100 DC Readiness Score. They are concentrated in Dane (7), Milwaukee (5), Washington (3) and Kenosha (3). By grid region, 25 are in MISO.
County pages: Dane · Milwaukee · Washington · Kenosha
What power, fiber and flood exposure do these greenfield sites have?
Of the top 25 greenfield sites in Wisconsin, 1 have a recorded nearest-substation voltage, with a median of 345 kV; for 1 that substation is rated 230 kV or higher. Their counties have a median of 12 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 7 km. The median interconnection-queue wait in their markets is 4.3 years. 1 of the 24 with a mapped FEMA flood zone sits in a high-risk (A or V) zone. 7 lie within 25 km of a binding transmission constraint.
Frequently asked questions
How many greenfield datacenter sites are in Wisconsin?
GridCensus catalogs 465 greenfield datacenter candidate sites in Wisconsin, 3% of the national total for this type (15th of 51 states).
What is a greenfield datacenter site?
Undeveloped land with no prior industrial use. Greenfield parcels offer maximum design flexibility and large contiguous footprints, but typically require full utility build-out — the speed-to-power story hinges on proximity to existing transmission.
What is the best greenfield datacenter site in Wisconsin?
By DC Readiness Score, EC Near MMSD Jones Island Wastewater in Milwaukee ranks first at 65.1/100, followed by OZ Dane in Dane at 64.9.
Which Wisconsin counties have the best greenfield sites?
The top 25 greenfield sites in Wisconsin are concentrated in Dane (7), Milwaukee (5), Washington (3) and Kenosha (3).
How does Wisconsin score for datacenters overall?
All 3,340 scored sites in Wisconsin average 55.4/100 DC Readiness, the 14th-highest of 52 states, against a national average of 53.0.
More on greenfield sites and Wisconsin
- All datacenter sites in Wisconsin· 3,340 sites
- Greenfield datacenter sites nationwide· 18,112 sites
- Substation-Adjacent sites in Wisconsin· 1,248 sites
- Industrial sites in Wisconsin· 1,013 sites
- Former Mine sites in Wisconsin· 364 sites
- Shovel-Ready sites in Wisconsin· 169 sites
- Federal Excess sites in Wisconsin· 69 sites
- Brownfield sites in Wisconsin· 12 sites
Greenfield sites in other states
- Greenfield sites in Texas· 1,276 sites
- Greenfield sites in Pennsylvania· 973 sites
- Greenfield sites in California· 941 sites
- Greenfield sites in Illinois· 913 sites
- Greenfield sites in Florida· 791 sites
- Greenfield sites in Michigan· 719 sites
- Greenfield sites in Ohio· 680 sites
- Greenfield sites in Kentucky· 640 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 13, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Greenfield datacenter sites in Wisconsin”, https://gridcensus.com/site-types/greenfield/wisconsin (data as of November 13, 2026).
Go deeper than the public screen
Every site and score for Greenfield sites in Wisconsin 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.