The Energy Conservation and Optimization Act has support from utilities, businesses, unions and environmental groups.
The energy conservation program is a partnership between the Massachusetts city and utility company Eversource.
A recent summit and regulator hearings this week have brought attention to apartment building energy efficiency.
Oregon, Massachusetts and Illinois are among states taking steps to regulate energy use, according to a new report.
Virginia’s 2018 energy law requires the utility to spend $870 million on efficiency programs over the next decade.