2025 is NESEA’s 50th year! To recognize this milestone, we’re celebrating of the role that NESEA has had in the lives and work of our community members.
Business Member Directory
Find high-performance building and renewable energy businesses.
Upcoming Events
BuildingEnergy Pro Tour
Pro Tour: Transforming & Expanding an Existing Building on the Dartmouth College...
Hanover, NH - Aug 1, 2025
BuildingEnergy Pro Tour
Pro Tour: Net-Zero Retrofit of a 1940s Elementary School
Manchester, CT - Aug 15, 2025
Special Thanks to All Our NESEA Industry Leader Members
Announcement
NESEA 50: What's Your NESEA Story?
Tuesday, July 8 to Friday, August 15, 2025
BuildingEnergy Pro Tour
Pro Tour: Transforming & Expanding an Existing Building on the Dartmouth College Campus
Friday, August 1, 2025
Join us for a Pro Tour of a high performance, 55,000 square foot building on the Dartmouth College campus that combined a major addition with targeted renovation to house the newly created Irving Institute for Energy and Society.
BuildingEnergy Pro Tour
Pro Tour: Net-Zero Retrofit of a 1940s Elementary School
Friday, August 15, 2025
This August, NESEA will head to Connecticut to offer a tour of a renovated and expanded 1940s elementary school that has been transformed into a modern, net-zero facility, complete with a 66 well geothermal HVAC system, to serve 400 students.
Newsletter
Catch up on the latest news from NESEA with our July Newsletter: we are now accepting applications to serve on our Board of Directors. Pro Tours in Connecticut and New Hampshire were announced and we also opened the request for proposals for our 50th anniversary magazine. Read more...
NESEA Announcements
Conference Video Archive
The BuildingEnergy NYC 2024 keynote addresses the lasting impacts of the Inflation Reduction Act, including how its implementation will change our approach...
Online Event Archive
Maine Passive House (MPH) has used two different strategies in retrofitting existing homes. One strategy involves adding insulation to the outside of the building; the other strategy is to add insulation to the inside of...