Energy Star is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy. See the Energy Star Federal Income Tax Credits and Other Incentives for Energy Efficiency website for information regarding the credits available for 2021 tax returns. The Bipartisan Budget Act of 2018 extended the credits in Part I of Form 5695 Residential Energy Credits until 2021 as told in the instructions for Form 5695.
To enter information for the residential energy credits in the TaxAct program:
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the webpage or document at the time it is accessed.