Along Route 7, from the Norwalk border to Route 33 in Wilton, Yankee Gas Services Company of Berlin, a part of the Northeast Utilities System, (800-989-0900/yankeegas.com/e-mail: customerservice@yankeegas.com) provides natural gas through underground pipes. Most properties served by Yankee Gas are commercial. A plan to bring the gas line further into Wilton was under review in early 2011.