Effective July 2015, NSTAR no longer offers its option to purchase green energy. The good news is that Mass Energy’s green-power programs should be your next stop. Mass Energy is a nonprofit, green-power supplier based in Boston whose green-power programs allow NSTAR customers to support electricity generated from local renewable sources. Mass Energy offers 100% renewable power at a cheaper rate than NSTAR did, and all green-power payments through Mass Energy are 100% tax deductible. Learn more and sign up here!