Planned solar farms in Wisconsin
What EIA-860M's Planned sheet says is coming in Wisconsin: 18 solar farms totalling 3 GW, each with the in-service year its developer reported and the construction status EIA records. A planned project is not a built one.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Planned projects
- 18
- 18 generating units
- Proposed capacity
- 3 GW
- Earliest in-service year
- 2026
- Latest in-service year
- 2028
Map of planned solar farms in Wisconsin
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List of planned solar farms in Wisconsin
| Vista Sands SolarSolar Photovoltaic | Vista Sands Solar LLC | Portage | 1,182 | 1 | 2028 | Regulatory approvals pending. Not under construction |
| Koshkonong Solar Energy Center LLCSolar Photovoltaic | Invenergy Services LLC | Dane | 300 | 1 | 2026 | Under construction |
| High Noon Solar Energy LLCSolar Photovoltaic | Invenergy Services LLC | Columbia | 300 | 1 | 2027 | Under construction |
| Portage Solar, LLCSolar Photovoltaic | Geronimo Power | Portage | 250 | 1 | 2027 | Under construction |
| Emerald Bluffs Solar ParkSolar Photovoltaic | Emerald Bluffs Solar Park LLC | Juneau | 225 | 1 | 2028 | Regulatory approvals pending. Not under construction |
| Ursa Solar, LLCSolar Photovoltaic | Samsung C&T Renewables, LLC | Columbia | 200 | 1 | 2027 | Planned for installation |
| Badger State Solar LLCSolar Photovoltaic | Badger State Solar LLC | Jefferson | 149 | 1 | 2027 | Under construction |
| Northern Prairie 1Solar Photovoltaic | Leeward Asset Management, LLC | St Croix | 101 | 1 | 2028 | Regulatory approvals received. Not under construction |
| Sinnissippi Solar Energy LLCSolar Photovoltaic | Invenergy Services LLC | Jefferson | 100 | 1 | 2028 | Planned for installation |
| BjornSolar Photovoltaic | OneEnergy, Inc. | Barron | 5 | 1 | 2026 | Under construction |
| City of Milwaukee- Airport ExpansionSolar Photovoltaic | WEC: City of Milwaukee - Airport Expansion | Milwaukee | 4.6 | 1 | 2026 | Under construction |
| Castle Rock Lake SolarSolar Photovoltaic | OneEnergy, Inc. | Juneau | 4.5 | 1 | 2026 | Under construction |
| GilmanSolar Photovoltaic | OneEnergy, Inc. | Chippewa | 3.8 | 1 | 2026 | Under construction |
| MondoviSolar Photovoltaic | OneEnergy, Inc. | Buffalo | 3 | 1 | 2026 | Under construction |
| Clark Solar-LongwoodSolar Photovoltaic | OneEnergy, Inc. | Clark | 2.5 | 1 | 2026 | Under construction |
| FalunSolar Photovoltaic | OneEnergy, Inc. | Burnett | 2.5 | 1 | 2026 | Under construction |
| SpoonerSolar Photovoltaic | OneEnergy, Inc. | Washburn | 2.3 | 1 | 2026 | Under construction |
| Vienna Walbec Customer HostedSolar Photovoltaic | Wisconsin Power & Light Co | Dane | 1.4 | 1 | 2026 | Under construction |
Where they are in the build
- Under construction7
- Under construction6
- Regulatory approvals pending. Not under construction2
- Planned for installation2
- Regulatory approvals received. Not under construction1
Planned solar farms in Wisconsin: FAQ
- How many solar farms are planned in Wisconsin?
- 18, for 3 GW of nameplate capacity. These are generators developers have reported to EIA, not generators that exist.
- What do the status letters mean?
- EIA files each planned generator under a status: regulatory approvals pending, under construction at or below half complete, under construction more than half complete, construction complete but not yet in commercial operation, or planned but not yet started. Each row shows its own.
- Do these projects always get built?
- No. EIA keeps a separate Canceled or Postponed sheet, and projects move between the sheets month to month. This page is the Planned sheet for 2026-07 and nothing more.