Marathon County, Wisconsin
Marathon County, Wisconsin has 22 power projects in the FieldProspects database: 20 operating plants totaling 1.2 GW and 2 planned projects totaling 268.8 MW. No data center record lists the county. Coal leads with 945.5 MW across 2 projects. No planned project is past its listed in-service date.
Marathon County and its neighbors
Counties shaded by data center MW on record, planned to operating. 4 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
of the county's operating generation is in the queue as new capacity: 268.8 MW planned across 2 projects against 1.2 GW operating.
Technology mix
22 projects, 1.4 GW planned and operating
Power generation in the county
20 plants operate inside Marathon County, 1.2 GW. The queue adds 268.8 MW across 2 projects.
Operating and planned generation by technology
MW in Marathon County
View as table
| Technology | Status | Projects | MW |
|---|---|---|---|
| Coal | Operating | 2 | 945.5 |
| Solar | Planned | 1 | 169.9 |
| Natural Gas | Operating | 7 | 131.6 |
| Wind | Planned | 1 | 98.9 |
| Biomass | Operating | 3 | 77.5 |
| Hydro | Operating | 8 | 9.9 |
Planned generation by listed in-service year
MW. Years before 2026 are past due.
View as table
| Year | Planned projects | MW |
|---|---|---|
| 2026 | 1 | 98.9 |
| 2027 | 0 | 0 |
| 2028 | 0 | 0 |
| 2029 | 0 | 0 |
| 2030 | 1 | 169.9 |
Marathon County against its neighbors
Wood County has the most data center MW among the neighbors, 20 MW. 4 of the 4 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 |
|---|---|---|---|---|---|
| Wood County | 1 | 551 | 0.05x | ||
| Marathon County this page | 0 | 269 | 0x | ||
| Lincoln County | 0 | 0 | 0x | ||
| Portage County | 0 | 3,578 | 0x | ||
| Clark County | 0 | 193 | 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.
5 counties shownWhat changed since June 4, 2026
1 project in Marathon County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.
Every change in Marathon 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 Marathon County
Project name, developer, status, MW, in-service year and the developer’s contacts, for all 22 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 Marathon County
We email you when a data center or power project in Marathon 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 Marathon County.
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