Columbia County, Wisconsin
Columbia County, Wisconsin has 21 power projects in the FieldProspects database: 9 operating plants totaling 1.3 GW and 12 planned projects totaling 2.3 GW. No data center record lists the county. Solar leads with 1.3 GW across 9 projects. 4 planned projects are past their listed in-service date.
Columbia County and its neighbors
Counties shaded by data center MW on record, planned to operating. 6 of its 7 neighboring counties have pages of their own. The rest are in the member database.
Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers
more planned than operating generation in Columbia County. 12 projects in the queue would add 2.3 GW to the 1.3 GW operating today, and 4 of them are past their listed in-service date.
Technology mix
21 projects, 3.6 GW planned and operating
Power generation in the county
9 plants operate inside Columbia County, 1.3 GW. The queue adds 2.3 GW across 12 projects, and 4 of them are past their listed in-service date.
Operating and planned generation by technology
MW in Columbia County
View as table
| Technology | Status | Projects | MW |
|---|---|---|---|
| Solar | Operating | 1 | 11.8 |
| Solar | Planned | 8 | 1,321.2 |
| Coal | Operating | 2 | 1,112 |
| Battery Storage | Operating | 1 | 5 |
| Battery Storage | Planned | 2 | 700 |
| Wind | Operating | 1 | 162 |
| Wind | Planned | 1 | 250 |
| Transmission | Planned | 1 | 20.2 |
| Hydro | Operating | 4 | 9.7 |
Planned generation by listed in-service year
MW. Years before 2026 are past due. 1 planned project lists no date and is left out.
View as table
| Year | Planned projects | MW |
|---|---|---|
| 2024 | 1 | 200 |
| 2025 | 3 | 271.2 |
| 2026 | 0 | 0 |
| 2027 | 4 | 1,000 |
| 2028 | 3 | 800 |
Columbia County against its neighbors
Dodge County has the most data center MW among the neighbors, 197.6 MW. 6 of the 6 have more generation operating than data center MW on record.
| County | Data center records | Data center MW | Operating generation MW | Planned generation MW | Data center MW per MW operating |
|---|---|---|---|---|---|
| Dodge County | 2 | 175 | 0.59x | ||
| Dane County | 1 | 2,614 | 0x | ||
| Columbia County this page | 0 | 2,291 | 0x | ||
| Juneau County | 0 | 655 | 0x | ||
| Sauk County | 0 | 0 | 0x | ||
| Adams County | 0 | 200 | 0x | ||
| Green Lake County | 0 | 0 | 0x |
Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.
7 counties shownWhat changed since June 4, 2026
1 project in Columbia County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.
Every change in Columbia County
Project, what changed, technology, MW and the dates that moved, for all 1 change.
| Project | Change | Technology | MW | Previous date | New date |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see the project behind each change, its developer and the dates that moved.
Every record in Columbia County
Project name, developer, status, MW, in-service year and the developer’s contacts, for all 21 records. Filter, sort and export to Excel.
| Project or campus | Developer | Status | MW | Year | Contacts |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see every field and can export up to 1,000 rows a month on Solo, unlimited on Unlimited.
Get alerts for Columbia County
We email you when a data center or power project in Columbia County is added, changes status, signs an interconnection agreement or slips its date. One email per snapshot, only when something changed.
Open every campus, project and contact in Columbia County.
Solo is $250 a month for one user. Unlimited is $500 for your whole team. Cancel any time.