Next Sunday, June 10, at noon or 2:30 pm, you can tour an energy-efficient home in beautiful East Haddam. It won the 2015 Connecticut Net Zero Energy challenge for the lowest Home Energy Rating System (HERS) score. The tour is being sponsored by People’s Action for Clean Energy (PACE). Tickets must be ordered in advance at the PACE website; they cost $20. Click here for detailed information about the house.