GREAT BARRINGTON — The town of Great Barrington is one of seven municipalities across the state that have been selected by the Baker-Polito Administration to participate in the first round of the HeatSmart Mass initiative, a community-based education and group purchasing program for clean heating and cooling technologies. The Department of Energy Resources and the Massachusetts Clean Energy Center selected the participants.HeatSmart Mass uses a group purchasing model to support the installation of air-source heat pumps, ground-source heat pumps, modern wood heating, and solar hot water.The program is modeled on the Solarize Mass program, which provides participating residents with an average of 20 percent savings compared to average state prices to adopt solar photovoltaic systems. Since its launch in 2011, 63 cities and towns have participated in Solarize Mass, leading to the contracting of more than 3,200 new small-scale installations at homes and businesses resulting in 21.6 megawatts of contracted solar electric capacity.