The Northeast Sustainable Energy Association’s annual Green Buildings Open House, the largest sustainable energy event in the Northeast, is taking place Saturday, Oct. 5, from 10 a.m. to 4 p.m.

On this day homes, businesses, and schools invite the public to investigate the renewable technologies and green building features employed on site. The goal of GBOH is to enable participants to see energy efficiency and renewable energy improvements in their communities, and motivate them to adopt similar solutions in their own homes. At host sites participants are able to talk with home and business owners, ask questions, and see how their renewable energy technologies actually work. GBOH also connects building owners and managers with professionals who can provide them with sustainable energy services or energy efficiency retrofits.

Buildings in Rockland and Spruce Head will be part of this year’s Green Buildings Open House. Find a list of locations at