Marathon County, WI interconnection queue
2 interconnection applications are pending in Marathon County, WI, requesting 270 MW of new generating capacity, as of 15 August 2026. 1 projects have been built here and 4 have been withdrawn since 2017.
Source: interconnection queues published by MISO. Parsed and normalised by Watt Street. Data as of 15 August 2026. A queued project is a request, not a commitment.
What is waiting in Marathon County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Solar | 1 | 170 MW |
| Wind | 1 | 100 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 1 | 99 MW | 14.3% |
| Still pending | 2 | 270 MW | 28.6% |
| Withdrawn | 4 | 500 MW | 57.1% |
| Suspended | 0 | — | 0.0% |
Withdrawal is the ordinary outcome of an interconnection application nationally, not a sign of a problem in this county. Most withdrawals are a developer testing a site and moving on.
The largest projects on file
| Project | Fuel | Capacity | Status | Filed | Queue |
|---|---|---|---|---|---|
| Stone Lake - (Pershing) - Gardner Park 345 kV Line Tap | Solar | 200 MW | withdrawn | 2018-03 | MISO |
| Kelly - Ackley 115.0kV | Solar | 170 MW | active | 2025-10 | MISO |
| Gardner Park-Stone Lake 345kV | Wind | 150 MW | withdrawn | 2022-09 | MISO |
| Stratford - McMillan 115.0kV | Wind | 100 MW | active | 2024-04 | MISO |
| Wein - Stratford 115 kV Line Tap | Wind | 100 MW | withdrawn | 2017-06 | MISO |
| B-54 Wien to McMillan 115KV | Wind | 99 MW | completed | 2020-06 | MISO |
| Gardner Park-Stone Lake 345kV | Solar | 50 MW | withdrawn | 2022-09 | MISO |
How this county ranks
Marathon County ranks #825 of 1,607 US counties by capacity currently queued, and #10 of 18 in Wisconsin.
Other Wisconsin counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Kenosha County | 6 | 1.9 GW |
| Walworth County | 4 | 1.6 GW |
| Portage County | 5 | 1.6 GW |
| Dane County | 3 | 1.3 GW |
| Columbia County | 6 | 1.3 GW |
| Fond du Lac County | 2 | 625 MW |
| Rock County | 5 | 510 MW |
| Waushara County | 4 | 330 MW |
Go deeper on Marathon County
The interactive map plots every one of these applications, and a generated county report puts them in a sourced PDF with the date each figure was true on every page.
Open Marathon County on the map County reports All of Wisconsin