Société National Grid PLC Buenos Aires S.E.

Boston Gas Co. transports and markets natural gas. It serves the residential, commercial, and industrial customers. The company was founded in 1822 and is headquartered in Waltham, MA.

The Narragansett Electric Co. provides electricity services to residents and businesses along the Narragansett Bay. The company is headquartered in Providence, RI.

New England Power Co. produces and transmits electricity. It offers electricity in wholesale quantities to other electric utilities. The company electricity is headquartered in Waltham, MA.

KeySpan Gas East Corp. provides distribution and transportation services of natural gases. The company was founded in 1998 and is headquartered in Hicksville, NY.

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.

Part of National Grid Plc, The Brooklyn Union Gas Co. provides electrical power. The company is based in Brooklyn, NY.

National Grid Electricity Distribution (South Wales) Plc provides electricity distribution services. The company was founded on April 1, 1989 and is headquartered in Bristol, the United Kingdom.

Part of National Grid Plc, National Grid Electricity Distribution (South West) Plc distributes electricity to industrial, commercial and domestic consumers. The company is based in Bristol, UK. The British company was founded in 1989. The CEO is Philip Swift.

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

Part of National Grid Plc, National Grid International Ltd. functions as an investment holding British company. The company is based in London, UK and was founded in 1990.

National Grid (US) Holdings Ltd. provides business support services. The company was founded on July 18, 1991 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.

Britned Development Ltd. is a venture capital and British innovation company for the energy industry. The joint venture company is based in London, UK and is a subsidiary of National Grid Partners (NGP), which was created by National Grid to advance the energy systems of tomorrow. The company focuses on connecting people to the energy they use safely, reliably and efficiently.

National Grid (US) Investments 4 Ltd. provides business support services. The company was founded on October 22, 1999 and is headquartered in London, the United Kingdom.

National Grid Grain LNG Ltd. engages in the extraction of crude petroleum. It operates a liquefied natural gas (LNG) terminal; and provides primary and secondary capacity, and truck and ship reloading services. The company was founded on June 18, 2002 and is headquartered in Rochester, the United Kingdom.

National Grid Interconnectors Ltd. engages in transmission of electricity. The company is headquartered in London, the United Kingdom.

National Grid North America, Inc. operates as an electricity and gas company. The company was founded on May 16, 2001 and is headquartered in Waltham, MA.

Part of National Grid Plc, National Grid Electricity Distribution (East Midlands) Plc is a regional electricity distribution division. The company is based in Bristol, UK. National Grid Electricity Distribution (East Midlands is responsible for distributing electricity in the East Midlands region of the UK. Philip Swift has been the CEO of the British company since 2013.

National Grid Electricity Distribution (West Midlands) Plc operates as electricity distributor networks. The company was founded on July 20, 1998 and is headquartered in Bristol, the United Kingdom.

Part of National Grid Plc, National Grid Carbon Ltd. is a British company that provides business support services. The company is based in London, UK and was founded in 2000.

Part of National Grid Plc, National Grid Interconnector Holdings Ltd. functions as a holding British company. The company is based in London, UK.

Part of National Grid Plc, National Grid North Sea Link Ltd. is a British company founded in 2012 that connects people to the energy they use safely, reliably and efficiently. The company is based in London, UK. The company is currently working on The Great Grid Upgrade, which is the largest overhaul of the electricity grid in generations. The company's infrastructure projects across and are helping to connect more renewable energy to homes and businesses.

Part of National Grid Plc, National Grid Partners Ltd. is a British utility company focused on transmission and distribution of electricity and gas. Founded in 2015, the company is based in London, UK. The company connects millions of people to the energy they use safely, reliably and efficiently, and operate across the world, developing, operating, and investing in large-scale clean energy infrastructure. National Grid Ventures (NGV) is at the forefront of the energy transition, helping to accelerate society’s drive towards net zero while maintaining security of supply today.

Part of National Grid Plc, National Grid IFA 2 Ltd. provides business support services. The company is based in London, UK.

Part of National Grid Plc, National Grid Electricity System Operator Ltd. supplies electricity power. The company is based in London, UK and was founded in 2017.

National Grid USA is engaged in generation, transmission, distribution and sale of both natural gas and electricity. Its services comprise the operation, maintenance, and design of energy systems for commercial and industrial customers. The company was founded in 1990 and is headquartered in Waltham, MA.

Nemo Link Ltd. was founded in 2012 and is a British company that designs, develops, finances, and owns electricity networks. The joint venture company is based in London, UK.

Part of National Grid Plc, National Grid Viking Link Ltd. is a British company that provides business support services. The company is based in London, UK and was founded in 2014.

Part of National Grid Plc, National Grid Electricity Distribution Holdings Ltd. functions as an investment holding British company. The company is based in Bristol, UK. The company was founded in 2017. National Grid Electricity Distribution Holdings was acquired by National Grid Holdings One Plc from PPL Corp. on June 14, 2021 for $10,831.08 million.

National Grid Electricity Distribution Plc engages in the provision of electric services. The company was founded on September 17, 2014, and is headquartered in London, the United Kingdom.