From 10am-4pm on October 5th dozens of homes in Maine will have their doors open for visitors to see and learn about energy efficiency and renewable energy. The tour is a tremendous learning opportunity for homeowners interested in reducing energy use and installing efficiency measures. For a full listing of Maine homes open on October 5th, visit the NESEA website here. Each home open for touring has a description of the home and the measures installed. The tour is free and open to the public. It is a self-guided tour, and no reservations are required.