QTS Dane County Data Center Campus (DeForest Vienna)
DeForest, Dane County, WIDeveloper: QTS Data CentersCensus GEOID 55025
- Stage
- Proposed
- Undisclosed in public filings
- Land, Water
QTS Data Centers proposed a 12 building, 800 MW hyperscale data center campus at County Highway I and Interstate 39 in DeForest and Vienna, Dane County, Wisconsin. It is proposed; the record holds no sourced date for when it reached that stage.
How much water it would use and who would use it have not been disclosed.
Tap a pin for the data center, the parcel for its record
- This record: Proposed, ringed
- data center
- Smaller pins: 21 other published records in Wisconsin
Details
- this record's location, ringed
- parcel outline, from the county parcel record
- city limits, U.S. Census Bureau, on a town level record
- county boundary
The other pins are the published projects in the same state, each in its stage color. The imagery beneath is the USGS national orthoimagery, public domain, shown so the land around the site can be read.
How to read this page. Every fact links to the source it rests on; a number in brackets is its place in the source list. A figure no source gives reads Not disclosed, and nothing is estimated. Where sources give different figures, each is shown with who gave it, and another source's figure never stands in for the record's own. Entries are added and never overwritten; corrections are listed under What happened.
What is known
Each figure as its source gave it. The number in brackets is its place in the source list.
- Buildings
- 12 buildings agency filing, verified October 27, 2026
- Power it would draw
- 800 MW the developer's figure About 8 percent of New York City's summer peak demand in 2024.
- Who leads it
- QTS Data Centers as stated by the source
- Undisclosed in public filings
- Land, Water, Who would use it, Jobs once it runs, Tax each year
The math behind the comparison
- QTS Dane County Data Center Campus (DeForest Vienna), capacity: 800 MW.
- New York City (NYISO Zone J) summer peak demand, actual, 2024: 10,245 MW (2024).
- 800 ÷ 10,245 = 0.08 (MW over MW).
Sources:
- QTS Data Centers (opens in a new tab)
- NYISO, 2025 Load and Capacity Data Report (Gold Book) (opens in a new tab), Table I-4a, Baseline Summer Non-Coincident Peak Demand, Historical and Forecast, page 26, Zone J, 2024 row (2024)
A comparison is arithmetic on two published rows and is never a new fact (how comparisons are made).
Every field, with who said it and when (Researcher view)
Impact figures
| Field | Value | Who says so | Source | Last verified |
|---|---|---|---|---|
| How much power it needs | 800 MW | the developer's figure | vi.deforest.wi.us (opens in a new tab) | October 27, 2026 |
| How much water it would use | ||||
| How loud it would be | ||||
| Jobs once it runs | ||||
| Tax it would pay each year |
The record's fields
| Field | Value | Who says so | Source | Last verified |
|---|---|---|---|---|
| Who is building it | QTS Data Centers | as stated by the source | October 27, 2026 | |
| Who is constructing it | ||||
| How much land | ||||
| Buildings | 12 buildings | agency filing, verified October 27, 2026 | vi.deforest.wi.us (opens in a new tab) | October 27, 2026 |
| Where its power comes from | ||||
| Grid connection | ||||
| How it is cooled |
A blank value cell means not disclosed by any source on file; a blank basis cell means the source gave the figure without saying on what basis.
The developer's figure is what the company said; what a permit allows is the ceiling a permit sets; measured means observed. Water is in gallons a day or a year, whichever the source stated; a tax claim given as a range shows both ends, each linked to the source that gave it.
Still not public, and where it would show up
The record adds each the day a source gives it. Why these documents.
- Water use A state water right filing or a water supply agreement.
- Who would use it A lease announcement or a tenant named in a filing.
- Jobs and tax An incentive agreement, a county's economic development filing or a fiscal note.
What was decided
Acts of Dane County and DeForest about data centers, on the record with their source. A rule about the area is not a decision about this record.
| Date | Who | Decision | Source |
|---|---|---|---|
| Dane County | Dane County passed an 18 month data center moratorium in June, applicable to towns subject to county zoning | hngnews.com (opens in a new tab) | |
| Cottage Grove | Village of Cottage Grove passed a one year data center moratorium in July | hngnews.com (opens in a new tab) | |
| Madison | City of Madison passed a one year data center moratorium in January | hngnews.com (opens in a new tab) | |
| Sun Prairie | Sun Prairie City Council unanimously approved a one year moratorium on new or expanded data centers larger than 10,000 square feet, unless an accessory use to an existing business, effective September 1 | hngnews.com (opens in a new tab) | |
| Madison | The moratorium on AI data centers expires in January 2027 | civicmedia.us (opens in a new tab) | |
| Madison | Madison passed a moratorium on AI data centers amid concerns about water use and high energy demands | civicmedia.us (opens in a new tab) |
1 earlier decision on the county's rows
| Date | Who | Decision | Source |
|---|---|---|---|
| Dane County | Dane County imposed a data center moratorium | wispolitics.com (opens in a new tab) |
January 13, 2026 Madison, WI Madison Common Council One Year Data Center Moratorium Vote
On January 13, 2026, the Madison Common Council voted to enact a one year moratorium pausing land use approvals for new data centers over 10,000 square feet while city staff studies energy, water, and climate plan impacts.
- Satya Rhodes Conway, Mayor, City of Madison Elected Official auto captions, unchecked
"US NOW WITH MORE ON WHAT PROMPTED THE CITY'S DECISION TO PROMPTED THE CITY'S DECISION TO PROMPTED THE CITY'S DECISION TO PAUSE PROMPTED THE CITY'S DECISION TO PAUSE THE PROMPTED THE CITY'S DECISION TO PAUSE THE NEW PROMPTED THE CITY'S DECISION TO PAUSE THE NEW DEVELOPMENTS. PAUSE THE NEW DEVELOPMENTS. PAUSE THE NEW DEVELOPMENTS. MACKENZIE... PAUSE THE NEW DEVELOPMENTS. MACKENZIE... THE PAUSE THE NEW DEVELOPMENTS. MACKENZIE... THE KEY PAUSE THE NEW DEVELOPMENTS. MACKENZIE... THE KEY WORD MACKENZIE... THE KEY WORD MACKENZIE... THE KEY WORD YOU MACKENZIE... THE KEY WORD YOU USED MACKENZIE... THE KEY WORD YOU USED IS MACKENZIE... THE KEY WORD YOU USED IS áNEW. YOU USED IS áNEW. YOU USED IS áNEW. TAKE YOU USED IS áNEW. TAKE A YOU USED IS áNEW. TAKE A LOOK YOU USED IS áNEW. TAKE A LOOK AT YOU USED IS áNEW. TAKE A LOOK AT THIS YOU USED IS áNEW. TAKE A LOOK AT THIS MAP... TAKE A LOOK AT THIS MAP... TAKE A LOOK AT THIS MAP... MADISON TAKE A LOOK AT THIS MAP... MADISON ALREADY TAKE A LOOK AT THIS MAP... MADISON ALREADY HAS TAKE A LOOK AT THIS MAP... MADISON ALREADY HAS MORE TAKE A LOOK AT THIS MAP... MADISON ALREADY HAS MORE THAN TAKE A LOOK AT THIS MAP... MADISON ALREADY HAS MORE THAN 10 MADISON ALREADY HAS MORE THAN 10 MADISON ALREADY HAS MORE THAN 10 DATA MADISON ALREADY HAS MORE THAN 10 DATA CENTERS. DATA CENTERS. DATA CENTERS. A DATA CENTERS. A PLANNING DATA CENTERS. A PLANNING COMMISSION A PLANNING COMMISSION A PLANNING COMMISSION REPORT A PLANNING COMMISSION REPORT SHOWS A PLANNING COMMISSION REPORT SHOWS THAT A PLANNING COMMISSION REPORT SHOWS THAT OF A PLANNING COMMISSION REPORT SHOWS THAT OF THOSE REPORT SHOWS THAT OF THOSE REPORT SHOWS THAT OF THOSE EXISTING REPORT SHOWS THAT OF THOSE EXISTING FACILITIES, REPORT SHOWS THAT OF THOSE EXISTING FACILITIES, ONLY REPORT SHOWS THAT OF THOSE EXISTING FACILITIES, ONLY TWO EXISTING FACILITIES, ONLY TWO EXISTING FACILITIES, ONLY TWO WOULD EXISTING FACILITIES, ONLY TWO WOULD QUALIFY EXISTING FACILITIES, ONLY TWO WOULD QUALIFY TO EXISTING FACILITIES, ONLY TWO WOULD QUALIFY TO BE EXISTING FACILITIES, ONLY TWO WOULD QUALIFY TO BE BLOCKED EXISTING FACILITIES, ONLY TWO WOULD QUALIFY TO BE BLOCKED BY WOULD QUALIFY TO BE BLOCKED BY WOULD QUALIFY TO BE BLOCKED BY THE WOULD QUALIFY TO BE BLOCKED BY THE NEW WOULD QUALIFY TO BE BLOCKED BY THE NEW MORATORIUM WOULD QUALIFY TO BE BLOCKED BY THE NEW MORATORIUM IF WOULD QUALIFY TO BE BLOCKED BY THE NEW MORATORIUM IF THEY WOULD QUALIFY TO BE BLOCKED BY THE NEW MORATORIUM IF THEY WERE THE NEW MORATORIUM IF THEY WERE THE NEW MORATORIUM IF THEY WERE PROPOSED THE NEW MORATORIUM IF THEY WERE PROPOSED TODAY. PROPOSED TODAY. PROPOSED TODAY. THIS PROPOSED TODAY. THIS ALL PROPOSED TODAY. THIS ALL COMES PROPOSED TODAY. THIS ALL COMES INTO PROPOSED TODAY. THIS ALL COMES INTO PLAY PROPOSED TODAY. THIS ALL COMES INTO PLAY AS THIS ALL COMES INTO PLAY AS THIS ALL COMES INTO PLAY AS CITY THIS ALL COMES INTO PLAY AS CITY LEADERS THIS ALL COMES INTO PLAY AS CITY LEADERS VOTE THIS ALL COMES INTO PLAY AS CITY LEADERS VOTE TO THIS ALL COMES INTO PLAY AS CITY LEADERS VOTE TO PUMP THIS ALL COMES INTO PLAY AS CITY LEADERS VOTE TO PUMP THE CITY LEADERS VOTE TO PUMP THE"
- Resident public comment Resident Public Comment auto captions, unchecked
"CITY LEADERS VOTE TO PUMP THE BRAKES BRAKES BRAKES DATA BRAKES DATA CENTERS BRAKES DATA CENTERS ARE BRAKES DATA CENTERS ARE POPPING BRAKES DATA CENTERS ARE POPPING UP DATA CENTERS ARE POPPING UP DATA CENTERS ARE POPPING UP AROUND DATA CENTERS ARE POPPING UP AROUND THE DATA CENTERS ARE POPPING UP AROUND THE COUNTRY. DATA CENTERS ARE POPPING UP AROUND THE COUNTRY. ON DATA CENTERS ARE POPPING UP AROUND THE COUNTRY. ON TUESDAY AROUND THE COUNTRY. ON TUESDAY AROUND THE COUNTRY. ON TUESDAY MADISON AROUND THE COUNTRY. ON TUESDAY MADISON CITY AROUND THE COUNTRY. ON TUESDAY MADISON CITY OFFICIALS AROUND THE COUNTRY. ON TUESDAY MADISON CITY OFFICIALS VOTED AROUND THE COUNTRY. ON TUESDAY MADISON CITY OFFICIALS VOTED TO MADISON CITY OFFICIALS VOTED TO MADISON CITY OFFICIALS VOTED TO SLOW MADISON CITY OFFICIALS VOTED TO SLOW THAT MADISON CITY OFFICIALS VOTED TO SLOW THAT PROCESS MADISON CITY OFFICIALS VOTED TO SLOW THAT PROCESS DOWN. SLOW THAT PROCESS DOWN. SLOW THAT PROCESS DOWN. "ITS SLOW THAT PROCESS DOWN. "ITS JUST SLOW THAT PROCESS DOWN. "ITS JUST ABOUT SLOW THAT PROCESS DOWN. "ITS JUST ABOUT GIVING SLOW THAT PROCESS DOWN. "ITS JUST ABOUT GIVING US SLOW THAT PROCESS DOWN. "ITS JUST ABOUT GIVING US TIME "ITS JUST ABOUT GIVING US TIME "ITS JUST ABOUT GIVING US TIME TO "ITS JUST ABOUT GIVING US TIME TO ACTUALLY "ITS JUST ABOUT GIVING US TIME TO ACTUALLY COME "ITS JUST ABOUT GIVING US TIME TO ACTUALLY COME UP "ITS JUST ABOUT GIVING US TIME TO ACTUALLY COME UP WITH TO ACTUALLY COME UP WITH TO ACTUALLY COME UP WITH DEFINITION TO ACTUALLY COME UP WITH DEFINITION FOR TO ACTUALLY COME UP WITH DEFINITION FOR DATA TO ACTUALLY COME UP WITH DEFINITION FOR DATA CENTERS TO ACTUALLY COME UP WITH DEFINITION FOR DATA CENTERS IN DEFINITION FOR DATA CENTERS IN DEFINITION FOR DATA CENTERS IN OUR DEFINITION FOR DATA CENTERS IN OUR ZONING DEFINITION FOR DATA CENTERS IN OUR ZONING CODE DEFINITION FOR DATA CENTERS IN OUR ZONING CODE WHICH DEFINITION FOR DATA CENTERS IN OUR ZONING CODE WHICH WE DEFINITION FOR DATA CENTERS IN OUR ZONING CODE WHICH WE DON'T OUR ZONING CODE WHICH WE DON'T OUR ZONING CODE WHICH WE DON'T HAVE OUR ZONING CODE WHICH WE DON'T HAVE RIGHT OUR ZONING CODE WHICH WE DON'T HAVE RIGHT NOW. HAVE RIGHT NOW. HAVE RIGHT NOW. THE HAVE RIGHT NOW. THE MORATORIUM, HAVE RIGHT NOW. THE MORATORIUM, OR HAVE RIGHT NOW. THE MORATORIUM, OR PAUSE HAVE RIGHT NOW. THE MORATORIUM, OR PAUSE THAT THE MORATORIUM, OR PAUSE THAT THE MORATORIUM, OR PAUSE THAT WAS THE MORATORIUM, OR PAUSE THAT WAS APPROVED, THE MORATORIUM, OR PAUSE THAT WAS APPROVED, IS THE MORATORIUM, OR PAUSE THAT WAS APPROVED, IS A THE MORATORIUM, OR PAUSE THAT WAS APPROVED, IS A ZONING THE MORATORIUM, OR PAUSE THAT WAS APPROVED, IS A ZONING CODE WAS APPROVED, IS A ZONING CODE WAS APPROVED, IS A ZONING CODE CHANGE WAS APPROVED, IS A ZONING CODE CHANGE THAT WAS APPROVED, IS A ZONING CODE CHANGE THAT EXPIRES WAS APPROVED, IS A ZONING CODE CHANGE THAT EXPIRES IN WAS APPROVED, IS A ZONING CODE CHANGE THAT EXPIRES IN A WAS APPROVED, IS A ZONING CODE CHANGE THAT EXPIRES IN A YEAR. CHANGE THAT EXPIRES IN A YEAR. CHANGE THAT EXPIRES IN A YEAR. IT CHANGE THAT EXPIRES IN A YEAR. IT IS CHANGE THAT EXPIRES IN A YEAR. IT IS MEANT CHANGE THAT EXPIRES IN A YEAR. IT IS MEANT TO CHANGE THAT EXPIRES IN A YEAR. IT IS MEANT TO BUY CHANGE THAT EXPIRES IN A YEAR. IT IS MEANT TO BUY THE CHANGE THAT EXPIRES IN A YEAR. IT IS MEANT TO BUY THE CITY CHANGE THAT EXPIRES IN A YEAR. IT IS MEANT TO BUY THE CITY MORE IT IS MEANT TO BUY THE CITY MORE IT IS MEANT TO BUY THE CITY MORE TIME IT IS MEANT TO BUY THE CITY MORE TIME BEFORE IT IS MEANT TO BUY THE CITY MORE TIME BEFORE ANY IT IS MEANT TO BUY THE CITY MORE TIME BEFORE ANY LONG IT IS MEANT TO BUY THE CITY MORE TIME BEFORE ANY LONG TERM TIME BEFORE ANY LONG TERM TIME BEFORE ANY LONG TERM DECISIONS TIME BEFORE ANY LONG TERM DECISIONS ARE TIME BEFORE ANY LONG TERM DECISIONS ARE MADE TIME BEFORE ANY LONG TERM DECISIONS ARE MADE ON TIME BEFORE ANY LONG TERM DECISIONS ARE MADE ON MORE TIME BEFORE ANY LONG TERM DECISIONS ARE MADE ON MORE DATA DECISIONS ARE MADE ON MORE DATA DECISIONS ARE MADE ON MORE DATA CENTERS DECISIONS ARE MADE ON MORE DATA CENTERS COMING DECISIONS ARE MADE ON MORE DATA CENTERS COMING TO DECISIONS ARE MADE ON MORE DATA CENTERS COMING TO TOWN. CENTERS COMING TO TOWN. CENTERS COMING TO TOWN. "ONE CENTERS COMING TO TOWN. "ONE OF CENTERS COMING TO TOWN. "ONE OF THE CENTERS COMING TO TOWN. "ONE OF THE REASONS CENTERS COMING TO TOWN. "ONE OF THE REASONS WE CENTERS COMING TO TOWN. "ONE OF THE REASONS WE ARE"
- Madison Common Council Member Elected Official auto captions, unchecked
"CENTERS COMING TO TOWN. "ONE OF THE REASONS WE ARE DOING "ONE OF THE REASONS WE ARE DOING "ONE OF THE REASONS WE ARE DOING THE "ONE OF THE REASONS WE ARE DOING THE MORATORIUM "ONE OF THE REASONS WE ARE DOING THE MORATORIUM IS "ONE OF THE REASONS WE ARE DOING THE MORATORIUM IS SO "ONE OF THE REASONS WE ARE DOING THE MORATORIUM IS SO THAT "ONE OF THE REASONS WE ARE DOING THE MORATORIUM IS SO THAT STAFF THE MORATORIUM IS SO THAT STAFF THE MORATORIUM IS SO THAT STAFF ACTUALLY THE MORATORIUM IS SO THAT STAFF ACTUALLY HAS THE MORATORIUM IS SO THAT STAFF ACTUALLY HAS THE THE MORATORIUM IS SO THAT STAFF ACTUALLY HAS THE TIME THE MORATORIUM IS SO THAT STAFF ACTUALLY HAS THE TIME TO THE MORATORIUM IS SO THAT STAFF ACTUALLY HAS THE TIME TO DO THE MORATORIUM IS SO THAT STAFF ACTUALLY HAS THE TIME TO DO THE ACTUALLY HAS THE TIME TO DO THE ACTUALLY HAS THE TIME TO DO THE RESEARCH ACTUALLY HAS THE TIME TO DO THE RESEARCH AND ACTUALLY HAS THE TIME TO DO THE RESEARCH AND SEE ACTUALLY HAS THE TIME TO DO THE RESEARCH AND SEE HOW ACTUALLY HAS THE TIME TO DO THE RESEARCH AND SEE HOW THESE ACTUALLY HAS THE TIME TO DO THE RESEARCH AND SEE HOW THESE RE RESEARCH AND SEE HOW THESE RE RESEARCH AND SEE HOW THESE RE BEING RESEARCH AND SEE HOW THESE RE BEING REGULATED RESEARCH AND SEE HOW THESE RE BEING REGULATED OTHER RESEARCH AND SEE HOW THESE RE BEING REGULATED OTHER PLACES." 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Using this data in a report? Support the record.
What happened
-
· Status: stalled or cancelled (content date)
QTS Data Centers proposed a 1,600 acre and 12 billion dollar data center project in DeForest but formally withdrew its application after the village board voted unanimously against it.
The full QTS Dane County Data Center Campus (DeForest Vienna) timeline, in order
The site
The pin is the site's address.
- Where
- County Highway I and Interstate 39, DeForest, WI 53532, DeForest, Dane County, Wisconsin [source] (opens in a new tab)
- How exactly it is located
- Exact, at the address
- The parcel
- No parcel outline in the public record
- Nearest homes
- Not computed for a record placed at a place center
- Nearest records
- Network 222 Carrier Hotel and Data Center (Madison), 11 mi
- SupraNet Communications Madison Data Center, 13 mi
- EdgeConneX Madison Data Center (EDCMAD01), 14 mi
- US Signal and OneNeck Madison Data Center (WI02), 17 mi
- Meta Beaver Dam Data Center, 32 mi
Keep going
Questions about this project
5 questions answered from the record
How big is QTS Dane County Data Center Campus (DeForest Vienna)?
-
The record has 2 measures of its size: 800 MW (the developer's figure, vi.deforest.wi.us (opens in a new tab)) and 12 buildings (agency filing, verified October 27, 2026, vi.deforest.wi.us (opens in a new tab)). Its acreage is not disclosed.
Who is building QTS Dane County Data Center Campus (DeForest Vienna)?
-
QTS Data Centers is the developer. No construction contractor is named on the record yet.
How much power and water does QTS Dane County Data Center Campus (DeForest Vienna) say it needs?
-
Power: 800 MW (the developer's figure, vi.deforest.wi.us (opens in a new tab)). Water: not disclosed by any source on file.
Where does QTS Dane County Data Center Campus (DeForest Vienna) stand today?
-
It is proposed; the date it reached that stage is not sourced, only the day a page was read. The newest entry, February 6, 2026: QTS Data Centers proposed a 1,600 acre and 12 billion dollar data center project in DeForest but formally withdrew its application after the village board voted unanimously against it. [1]
What has DeForest or Dane County decided about it?
-
Dane County: Dane County passed an 18 month data center moratorium in June, applicable to towns subject to county zoning (reported September 3, 2026, hngnews.com (opens in a new tab)); and Cottage Grove: Village of Cottage Grove passed a one year data center moratorium in July (reported September 3, 2026, hngnews.com (opens in a new tab)). 7 events are on the county's rows; a rule about the area is not a decision about this record.
Sources
Reporting
- The local battles over data center developments in Wisconsin - PBS Wisconsin (opens in a new tab), PBS Wisconsin, February 6, 2026, query feed
1 source on file.
About this data
Last verified , first recorded . Every correction is logged on the corrections page. Report a correction · Send a tip about QTS Dane County Data Center Campus (DeForest Vienna)
Cite this page
Data Center Record, "QTS Dane County Data Center Campus (DeForest Vienna)", https://datacenterrecord.org/projects/qts-deforest-data-center-wi. Data: Data Center Record, datacenterrecord.org, CC BY-NC 4.0.
The structured rows are CC BY-NC 4.0. Link to this page; that is what turns a reuse into a citation. Commercial use needs a license. Prose stays under copyright.
For researchers
- Stage
- Proposed
- Tier
- built from one source
- Tags
- Built from one source
- Coordinates
- 43.2385, -89.3642
- How the location is known
- Location from the site's street address.
- Location source
- https://www.vi.deforest.wi.us/
- Coordinate source
- Village of DeForest and Town of Vienna annexation filings
- How capacity was disclosed
- the developer's figure
- Capacity, if disclosed
- 800 MW, the developer's figure
- Rating of the county's rows
- Restrictive
- Published
- October 21, 2026
- Last verified
- October 27, 2026
- Undisclosed in public filings
- Location source number, Location last verified, EPA registry id, Uses, Tenancy, Cooling, How water was disclosed, How acreage was disclosed, Interconnection