Energy Star is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy. See the Energy Star website Federal Tax Credits for Consumer Energy Efficiency for information regarding the credits available for 2018 tax returns. These credits are available in the TaxAct program.
To enter information for the residential energy credits:
Note: The Bipartisan Budget Act of 2018 extended the credits in Part I of Form 5695 until 2021 as told in the instructions for 5695.