The Building Electrification Technology Roadmap (BETR) is a guide for utilities and other organizations developing, implementing, and supporting electrification technology programs as a way to advance high efficiency technologies, reduce GHG emissions, and improve public health. It’s the first study to characterize the industry status of a comprehensive set of electrification technologies that replace traditional combustion technologies, site barriers to adoption, and the road to accelerate adoption. Although developed and written to guide efficiency programs, the recommended actions can also inform manufacturers, the design community, owners, and policymakers.