Natural Gas utilities.New England's largest energy delivery company, with more than 3.6 million electric and natural gas customers in Connecticut, Massachusetts and New Hampshire.Eversource is New England's largest energy delivery company, safely and reliably delivering energy to more than 3.6 million electric and natural gas customers in Connecticut, Massachusetts and New Hampshire.Our service territory•Connecticut: Our electric service territory includes 149 towns and covers 4,400 square miles. Our natural gas service territory includes 71 towns and covers 2,341 square miles.•Massachusetts: Our electric service territory includes 140 towns and covers 3,192 square miles. Our natural gas service territory includes 51 towns and covers 1,067 square miles.•New Hampshire: Our service territory includes 211 towns and 5,628 square miles.