EAP participants are among the company`s most vulnerable customers and face financial difficulties that could lead them to choose between paying their energy bills and other needs. The company believes that billing credits are the best tool to help these customers manage their energy costs. National Grid is an international energy supplier. In the United States, National Grid supplies electricity to approximately 3.3 million customers in Massachusetts, New Hampshire, New York and Rhode Island and manages Long Island`s power grid under an agreement with the Long Island Power Authority (LIPA). It is the largest natural gas distributor in the northeastern United States and serves approximately 3.4 million customers in Massachusetts, New Hampshire, New York and Rhode Island. .