Easton is one of 20 communities around the state to receive a portion of $3.7 million in state grants to fund clean-energy projects. The grants are given to existing Green Communities that have successfully invested their initial designation grants, and have made a commitment to reduce energy costs by at least 20 percent. Easton will receive $250,000, the largest grant amount allowed. About $42,000 will go to installing insulated garage doors at town properties, while about $208,000 will fund a LED streetlight project. In a statement, state Energy and Environmental Affairs Secretary Rick Sullivan lauded Easton and other communities for their efforts. “The clean energy revolution is sweeping Massachusetts, and it is happening largely because of the bold steps and smart decisions made at the local level,” he said.