Solar thermal incentives in the State of Wisconsin change frequently and the best source for the latest up-to-date information is the Database of State Incentives for Renewables & Efficiency (DSIRE) — an ongoing project of the North Carolina Solar Center and the Interstate Renewable Energy Council (IREC). It is funded by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE), primarily through the Office of Planning, Budget and Analysis (PBA). The site is administered by the National Renewable Energy Laboratory (NREL), which is operated for DOE by the Alliance for Sustainable Energy, LLC.  Please see

When considering incentives, there are often 3 main sources:

1) The federal government (including the 30% alternative energy tax credit)

2) State-wide programs (in Wisconsin, Focus on Energy runs various programs, including one that provides Cash-Back Rewards of between 15 and 35%)

3) Utility-sponsored programs (specific to territories; incentive amounts vary widely)

Again… please check DSIREUSA.ORG for the latest updates