Rock LakeSolar WI, LLC
Rock LakeSolar WI, LLC is a 5 MW solar farm in Jefferson County, Wisconsin, operated by Wisconsin Electric Power Co. EIA-860M lists 1 generating unit here, inside MISO. Its unit entered service in 2025.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 5 MW
- 5 MW net summer
- Generating units
- 1
- In service
- 2025
- EIA plant ID
- 69431
Where it is
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- County
- Jefferson County, Wisconsin
- Coordinates
- 43.1132, -88.9752
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Wisconsin Electric Power Co
- Primary energy source
- Solar
- Technologies
- Solar Photovoltaic
- Status
- Operating
Rock LakeSolar WI, LLC: FAQ
- Where is Rock LakeSolar WI, LLC?
- In Jefferson County, Wisconsin (WI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Rock LakeSolar WI, LLC?
- 5 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Rock LakeSolar WI, LLC?
- EIA-860M names Wisconsin Electric Power Co as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is Rock LakeSolar WI, LLC still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.