Substation-Adjacent Datacenter Sites in Wisconsin
At a glance
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Top substation-adjacent sites in Wisconsin
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| OAK CREEK STATION | Substation-Adjacent | Milwaukee County | 345 kV | 600 MW | 4.3 yrs | 72.3 |
| PLEASANT PRAIRIE | Substation-Adjacent | Kenosha County | 345 kV | 600 MW | 4.3 yrs | 71.1 |
| CARDINAL | Substation-Adjacent | Dane County | 345 kV | 600 MW | 4.3 yrs | 69.6 |
| GRANVILLE | Substation-Adjacent | Milwaukee County | 345 kV | 600 MW | 4.3 yrs | 68.3 |
| FOX RIVER STATION | Substation-Adjacent | Outagamie County | 345 kV | 600 MW | 4.3 yrs | 68.1 |
| RACINE | Substation-Adjacent | Racine County | 345 kV | 600 MW | 4.3 yrs | 68.0 |
| ARPIN | Substation-Adjacent | Wood County | 345 kV | 600 MW | 4.3 yrs | 67.8 |
| NORTH APPLETON | Substation-Adjacent | Outagamie County | 345 kV | 600 MW | 4.3 yrs | 67.7 |
| NORTH MADISON 345/138KV | Substation-Adjacent | Dane County | 345 kV | 600 MW | 4.3 yrs | 67.7 |
| SOUTH FOND DE LAC | Substation-Adjacent | Fond du Lac County | 345 kV | 600 MW | 4.3 yrs | 67.5 |
| FITZGERALD | Substation-Adjacent | Winnebago County | 345 kV | 600 MW | 4.3 yrs | 67.2 |
| UNKNOWN133208 | Substation-Adjacent | Marathon County | 345 kV | 600 MW | 4.3 yrs | 67.2 |
| BAIN | Substation-Adjacent | Kenosha County | 345 kV | 600 MW | 4.3 yrs | 67.0 |
| FOREST JUNCTION | Substation-Adjacent | Calumet County | 345 kV | 600 MW | 4.3 yrs | 66.9 |
| EDGEWATER STATION | Substation-Adjacent | Sheboygan County | 345 kV | 600 MW | 4.3 yrs | 66.9 |
| ARCADIAN | Substation-Adjacent | Waukesha County | 345 kV | 600 MW | 4.3 yrs | 66.6 |
| CEDARSAUK | Substation-Adjacent | Ozaukee County | 345 kV | 600 MW | 4.3 yrs | 66.5 |
| BLUEMOUND | Substation-Adjacent | Milwaukee County | 230 kV | 300 MW | 4.3 yrs | 66.5 |
| DEADEND167359 | Substation-Adjacent | Milwaukee County | 230 kV | 300 MW | 4.3 yrs | 66.5 |
| TAP138061 | Substation-Adjacent | Washington County | 345 kV | 600 MW | 4.3 yrs | 66.4 |
| CYPRESS | Substation-Adjacent | Calumet County | 345 kV | 600 MW | 4.3 yrs | 66.3 |
| PULLIAM SW YD | Substation-Adjacent | Brown County | 138 kV | 100 MW | 4.3 yrs | 66.3 |
| WERNER WEST | Substation-Adjacent | Outagamie County | 345 kV | 600 MW | 4.3 yrs | 65.9 |
| CHRISTIANA | Substation-Adjacent | Jefferson County | 345 kV | 600 MW | 4.3 yrs | 65.8 |
| ROCKY RUN | Substation-Adjacent | Portage County | 345 kV | 600 MW | 4.3 yrs | 65.6 |
How does Wisconsin compare with other states for substation-adjacent sites?
With 1,248 sites, Wisconsin ranks 9th of the 52 states that have any substation-adjacent candidate sites. Texas leads with 3,635. Nationally, substation-adjacent sites average 57.4/100 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 substation-adjacent sites in Wisconsin?
The top 25 range from 72.3 to 65.6 on the 0–100 DC Readiness Score. They are concentrated in Milwaukee County (4), Outagamie County (3), Kenosha County (2) and Dane County (2). By grid region, 25 are in MISO.
County pages: Milwaukee County · Outagamie County · Kenosha County · Dane County
What power, fiber and flood exposure do these substation-adjacent sites have?
Of the top 25 substation-adjacent sites in Wisconsin, 25 have a recorded nearest-substation voltage, with a median of 345 kV; for 24 that substation is rated 230 kV or higher. Their counties have a median of 9 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 19 km. The median interconnection-queue wait in their markets is 4.3 years. None of the 3 with a mapped FEMA flood zone sits in a high-risk (A or V) zone. 5 lie within 25 km of a binding transmission constraint.
Frequently asked questions
How many substation-adjacent datacenter sites are in Wisconsin?
GridCensus catalogs 1,248 substation-adjacent datacenter candidate sites in Wisconsin, 3% of the national total for this type (9th of 52 states).
What is a substation-adjacent datacenter site?
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
What is the best substation-adjacent datacenter site in Wisconsin?
By DC Readiness Score, OAK CREEK STATION in Milwaukee County ranks first at 72.3/100, followed by PLEASANT PRAIRIE in Kenosha County at 71.1.
Which Wisconsin counties have the best substation-adjacent sites?
The top 25 substation-adjacent sites in Wisconsin are concentrated in Milwaukee County (4), Outagamie County (3), Kenosha County (2) and Dane County (2).
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 substation-adjacent sites and Wisconsin
- All datacenter sites in Wisconsin· 3,340 sites
- Substation-Adjacent datacenter sites nationwide· 38,820 sites
- Industrial sites in Wisconsin· 1,013 sites
- Greenfield sites in Wisconsin· 465 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
Substation-Adjacent sites in other states
- Substation-Adjacent sites in Texas· 3,635 sites
- Substation-Adjacent sites in California· 1,573 sites
- Substation-Adjacent sites in Florida· 1,539 sites
- Substation-Adjacent sites in Georgia· 1,530 sites
- Substation-Adjacent sites in Oklahoma· 1,344 sites
- Substation-Adjacent sites in Washington· 1,343 sites
- Substation-Adjacent sites in Minnesota· 1,270 sites
- Substation-Adjacent sites in Kentucky· 1,261 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 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Substation-Adjacent datacenter sites in Wisconsin”, https://gridcensus.com/site-types/substation/wisconsin (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for Substation-Adjacent 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.