Subsection (b) of section 84 of chapter 179 of the acts of 2022 is hereby amended by striking out the words “or to hospitals or medical offices regulated by the department of public health as a health care facility.” and inserting in place thereof the following words:- “to hospitals or medical offices regulated by the department of public health as a health care facility, or commercial, industrial and institutional permitted installations.”

(b) The department of energy resources shall establish a demonstration project in which cities and towns may, notwithstanding chapter 40A of the General Laws, section 13 of chapter 142 of the General Laws and chapter 164 of the General Laws or any other general or special law to the contrary, adopt and amend general or zoning ordinances or by-laws that require new building construction or major renovation projects to be fossil fuel-free, and enforce restrictions and prohibitions on new building construction and major renovation projects that are not fossil fuel-free, including through the withholding or conditioning of building permits; provided, that said restrictions and prohibitions shall not apply to research laboratories for scientific or medical research, or to hospitals or medical offices regulated by the department of public health as a health care facility or commercial, industrial and institutional projects.