Data center · Facility
AnnouncedUndisclosed (Balloonist LLC) data center in Menomonie, Wisconsin
Announced Jul 2025, in Dunn County. No permit on record yet.
No permit on record yet. First seen Sep 23, 2026.
Where
Menomonie, Dunn County, Wisconsin.
Exact site not public. Shown at township level.
- Work it brings
- Electrical, mechanical, low-voltage, site, fiber
- The trades a data center build hires, from the site work to the last mile of fiber.
- Who bills here
- Undisclosed (Balloonist LLC)
- The operator, per Compute Atlas. No public record names its general contractor yet. The carriers show here when a record names them.
Nearest other build
Connect Data Centers – Eagan (powered by Oppidan)
58.5 miles away
Builds in Dunn County
Published build in the Kapwork Grow tracker, this one included. Published Nov 3, 2026.
Builds in Wisconsin
Proposed, approved, under construction or expanding, this one included. Kapwork Grow tracker, published Nov 3, 2026.
U.S. data center construction
August 2026, seasonally adjusted annual rate, preliminary. Up 73.2% from $49.05B in August 2025; 63.3% of private office construction. U.S. Census Bureau, C30, released Oct 1, 2026.
What this means for you
Same customers, bigger invoices.
The electrical, mechanical and fiber work on this campus bills Undisclosed (Balloonist LLC), its GC and the carriers you already know. Certify the invoices behind it, and funders compete to fund them.
An announced or permitted build is not a contract, an open bid or a purchase order.
Who your invoice goes to
- Undisclosed (Balloonist LLC)Operator
- General contractorNot named yet
- CarriersNot named yet
- UtilityNot named yet
Key facts
- Stage
- ProposedCompute Atlas · Jul 23, 2026
- Site area
- 324 acresKapwork Grow tracker · Nov 2, 2026
- Announced
- Jul 2025Compute Atlas · Jul 23, 2026
- Location
- Menomonie, Dunn County, WisconsinCompute Atlas · Jul 23, 2026
- Location precision
- Site footprint confirmedKapwork Grow tracker · Nov 2, 2026
- Community response
- Local opposition reportedKapwork Grow tracker · Nov 2, 2026
- Power source
- Grid powerKapwork Grow tracker · Nov 2, 2026
- Cooling
- Closed loopKapwork Grow tracker · Nov 2, 2026
- AI workload
- Likely AI or machine-learning workloadCompute Atlas · Jul 23, 2026
- Facility type
- AI data centerKapwork Grow tracker · Nov 2, 2026
What the public record lacks: the megawatts, the building area, the investment, the jobs, the general contractor's name and the completion date.
Who's involved
- Operator
- Undisclosed (Balloonist LLC)Compute Atlas · Jul 23, 2026
- Utility
- Xcel EnergyKapwork Grow tracker · Nov 2, 2026
- General contractor
- Not named in a public record yet
- Carriers
- Appear here as the records name them
How far along it is
- · Compute Atlas
Announced
- · Compute Atlas
Reported as announced
- · Compute Atlas
Reported as announced
- · Compute Atlas
Reported as announced
- · Kapwork's date
First seen in the Kapwork Grow tracker
Dates as reported. Not a bid calendar. A planned date is not evidence that work occurred. Dates marked Kapwork's date come from the tracker's own snapshots, not from the sources.
More builds
In Wisconsin
The Kapwork Grow tracker lists 16 published builds in Wisconsin, as published Nov 3, 2026; these are the ones linked to this record.
Questions this page answers
Is Menomonie Data Center Campus under construction?
Who is building Menomonie Data Center Campus?
Which carriers serve Menomonie Data Center Campus?
How do contractors on Menomonie Data Center Campus get paid sooner?
Already invoice Undisclosed (Balloonist LLC)?
Crews on a campus like this invoice the GC and the carriers in their own portals. Certify the unpaid invoices. Kapwork proves they're real so funders fund them sooner while the GC takes its time. Free for businesses.
- Multiple offers
- No notice of assignment
- Free for businesses
Sources, updates and data
Compute Atlas · Kapwork Grow tracker · U.S. Census C30
Where this comes from
- Compute Atlas facility record (Kubiak, E., 2026, CC BY 4.0)
Record menomonie-data-center-wi · As of Jul 23, 2026 - WTMJ (cited by Compute Atlas)
As of Jul 7, 2026 - Volume One (cited by Compute Atlas)
As of Jul 7, 2026 - Data Center Dynamics (cited by Compute Atlas)
As of Jul 7, 2026 - Menomonie News Net (cited by Compute Atlas)
As of Jul 7, 2026 - Wisconsin Public Radio (cited by Compute Atlas)
As of Jul 7, 2026 - Data Center Dynamics (cited by Compute Atlas)
As of Jul 7, 2026 - WCFW (cited by Compute Atlas)
As of Jul 7, 2026 - Menomonie Minute (cited by Compute Atlas)
As of Jul 7, 2026 - Oak Ridge National Laboratory (ORNL) / HIFLD (cited by Compute Atlas)
As of Jul 23, 2026 - Kapwork Grow tracker record, merged from the sources listed here (free account)
Merged view of the sources here · snapshot Nov 2, 2026 - U.S. Census Bureau, Construction Spending (Value of Construction Put in Place, C30)
National data center spending · August 2026 · released Oct 1, 2026 - Kapwork Grow tracker
Counts, nearest build and first-seen dates (Kapwork's dates), published Nov 3, 2026. Tracker snapshot Nov 2, 2026; sources fetched: Compute Atlas Sep 24, 2026; Server Country Sep 24, 2026; Pennsylvania DEP Sep 24, 2026; EPA ECHO Sep 24, 2026; Texas Comptroller Sep 24, 2026; UVA DC-SENSE Sep 24, 2026; Public Evidence Project Sep 24, 2026.
What each source reports
- Compute Atlas: Proposed
Updates
- Between Aug 15, 2026 and Sep 23, 2026: First seen in the Kapwork Grow tracker. Kapwork's date
- Jun 30, 2026: Reported as announced. Compute Atlas
- Jan 6, 2026: Reported as announced. Compute Atlas
- Sep 22, 2025: Reported as announced. Compute Atlas
- Jul 2025: Announced. Compute Atlas
Limitations and interpretation
- This record is the Kapwork Grow tracker's merged view of a facility, from the tracker snapshot built 2026-11-02. Facts tagged KW are the tracker's resolved values; the per-source rows it was merged from are listed under Sources and on the tracker record.
- Sources on this record: Compute Atlas: Kubiak, E. (2026). Compute Atlas [Data set]. https://doi.org/10.5281/zenodo.22284476 (CC BY 4.0). Every source is licensed for commercial use with attribution.
- An announced or permitted build is not a contract, an open bid or a purchase order.
- Capacity figures are as reported by the cited sources and may describe planned rather than energised capacity.
“Not reported” means missing information, not zero. Completed and withdrawn records can remain available as historical records.
Nearest build: Haversine great-circle distance on the tracker latitude and longitude, in statute miles, rounded to 0.1. First-seen dates: first_seen: the earliest committed snapshot of data/dcfo.sqlite holding any of the facility's source keys (source:source_id), narrowed to the nightly run day by the alert sender's facility_new events when they are available. status_first_seen: the start of the unbroken run of snapshots, ending at this one, in which a facility sharing a source key had the current status, narrowed by the latest status_changed event to that status. Dates are Kapwork's, not the sources'.
What we don't know yet
- The megawatts, the building area, the investment, the jobs, the general contractor's name and the completion date.
- The carriers that serve the campus.
- How the operator and its GC pay their contractors: portal, terms, days to pay.
Spot an error? Tell us
Cite: Kapwork Grow, “Menomonie Data Center Campus”, https://kapwork.com/grow/directory/datacenters/menomonie-data-center-campus-wi-dc_95c4e5a3de83, materially updated Nov 3, 2026.
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