In the United States, National Grid delivers electricity and natural gas to areas of the Northeast states of Massachusetts, New York, and Rhode Island. It serves over 3.3 million customers with electricity and 3.4 million customers with natural gas.
National Grid plc is a British multinational electricity and gas utility company headquartered in Warwick, United Kingdom. Its principal activities are in the United Kingdom and Northeastern United States.
National Grid USA
The utility operates over 9,000 miles (14,000 km) of electricity transmission. National Grid USA is currently headquartered in Waltham, Massachusetts in a 300,000-square-foot (28,000 m2) LEED certified "green" facility. National Grid sold off its services in New Hampshire after their request to increase gas and electric rates was denied. The US subsidiary carries out its business through a number of subsidiary companies (all doing business as "National Grid"). The main ones are: