John Pettigrew

National Grid Holdings One Plc provides electricity and gas distribution services. The company is headquartered in London, the United Kingdom.

Electric Power Research Institute, Inc. provides energy and environmental research services. It conducts research and development relating to the generation, delivery and use of electricity for the benefit of the public. The firm also provides technology, policy and economic analyses to drive long-range research and development planning and supports research in emerging technologies. The company was founded in 1972 and is headquartered in Palo Alto, CA.

National Grid Electricity Transmission Plc engages in the business of ownership and operation of regulated electricity transmission networks in Great Britain. The company was founded on April 1, 1989 and is headquartered in London, the United Kingdom.

National Grid Gas Holdings Ltd. operates as an investment holding company. The company is headquartered in London, the United Kingdom.

NG US I, Inc. distributes and transmits electricity and natural gas. It operates electricity distribution companies in New York, Massachusetts, Rhode Island and New Hampshire. The company is headquartered in Westborough, MA.

National Gas Transmission Plc engages in the natural gas transmission and distribution services. It operates through the Gas Transmission and Metering segments. The Gas Transmission segment includes network in Britain and liquefied natural gas storage activities. The Metering segment provides regulated gas metering activities in the UK, together with corporate activities. The company was founded on April 1, 1986 and is headquartered in Warwick, the United Kingdom.