To achieve net zero emissions by 2050, our homes need to be powered without any fossil fuels. RMI and its coalition of partners will research, organize, and advocate for state and city policy and regulations in support of all-electric new construction as well as an equitable and rapid transition away from fossil fuels in existing buildings. This project aims to put the U.S. on a trajectory towards 100% electric and efficient buildings powered by a clean power system and built with low-carbon building materials.