Under the Bipartisan Budget Act of 2018, the renewable energy tax credits for fuel cells, small wind turbines, and geothermal heat pumps now feature a gradual step down in the credit value, the same as those for solar energy systems.
30% for systems placed in service by 12/31/2019
26% for systems placed in service after 12/31/2019 and before 01/01/2021
22% for systems placed in service after 12/31/2020 and before 01/01/2022
Expires: December 31, 2021
Details: Existing homes and new construction qualify. Both principal residences and second homes qualify. Rentals do not qualify.