The proposed "All-Electric Building Act" amends Title 37 of the General Laws by introducing a new chapter that mandates all new commercial, residential, and mixed-use buildings to be all-electric if the initial permit application is submitted after December 31, 2026. An all-electric building is defined as one that relies solely on electricity for its energy needs, with no installations of natural gas, propane, or oil systems. The act also establishes definitions for "all-electric ready" buildings, which are designed to accommodate future retrofitting to all-electric systems, and outlines the responsibilities of the public utilities commission and other agencies to create guidelines for such buildings by January 1, 2026.

Exceptions to this requirement are provided for cases where constructing an all-electric building is deemed physically or technically infeasible, particularly for commercial food service establishments. Additionally, the act prohibits the conversion of all-electric buildings into mixed-fuel buildings after the specified date. Exemptions are also made for hospitals, medical facilities, laboratories for biological research, and restaurants. The act is set to take effect upon passage, and it aims to promote sustainable building practices while ensuring that the affordability of electricity remains a priority for residents.