The shift towards a “greener” environment has resulted in cities and states implementing electrification mandates, which will have a major impact on both current and future building design. Currently, most commercial and residential end users are already all-electric. However, there are some exceptions, such as space and water heating, that use a significant amount of energy. Several states, including California and New York, have cities that have introduced legislation requiring new construction to be all-electric. This means, for example, using electricity for heating rather than fossil fuels such as natural gas. Mandate or not, building owners and developers should consider the risks and rewards of an all-electric design.