Energy Star is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy. The Energy Star Federal Income Tax Credits and Other Incentives for Energy Efficiency webpage contains information regarding the available credits. These credits are entered in the Credits section of 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.