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Private company

National Grid US

National Grid US is a US energy company based in New York City.1 Its website says: “At National Grid we are committed to delivering safe and reliable energy to the customers and communities we serve. We are one of the largest investor-owned energy companies in the world - covering Massachusetts, New York, Rhode Island and the UK.”2 It is part of National Grid plc.1

Last updated Oct 21, 2026.

Overview

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Corporate structure

National Grid US is part of a group headed by National Grid plc. 30 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • National Grid plc London, United Kingdom
    • National Grid Electricity Distribution London, United Kingdom
    • NATIONAL GRID NORTH AMERICA INC. Waltham, Massachusetts, United States
      • National Grid USA Waltham, Massachusetts, United States
        • KEYSPAN GAS EAST CORPORATION Subsidiary · Hicksville, New York, United States
        • MASSACHUSETTS ELECTRIC COMPANY Subsidiary · Waltham, Massachusetts, United States
        • NEW ENGLAND POWER COMPANY Subsidiary · Waltham, Massachusetts, United States
    • National Grid US New York City, United States
    • Niagara Mohawk Power Corporation Syracuse, New York, United States
    • NESO Subsidiary
    • BOSTON GAS COMPANY Subsidiary · Waltham, Massachusetts, United States
    • BRITNED DEVELOPMENT LIMITED Subsidiary · London, United Kingdom
    • Fayette Solar, LLC Subsidiary · Bloomington, Minnesota, United States
    • GRAIN LNG LIMITED Subsidiary · London, United Kingdom
    • NATIONAL GRID (US) HOLDINGS LIMITED Subsidiary · London, United Kingdom
      • NATIONAL GRID (US) INVESTMENTS 4 LIMITED Subsidiary · London, United Kingdom
    • NATIONAL GRID ELECTRICITY DISTRIBUTION (EAST MIDLANDS) PLC Subsidiary · London, United Kingdom
    • NATIONAL GRID ELECTRICITY DISTRIBUTION (SOUTH WALES) PLC Subsidiary · London, United Kingdom
    • NATIONAL GRID ELECTRICITY DISTRIBUTION (SOUTH WEST) PLC Subsidiary · London, United Kingdom
    • NATIONAL GRID ELECTRICITY DISTRIBUTION (WEST MIDLANDS) PLC Subsidiary · London, United Kingdom
    • NATIONAL GRID ELECTRICITY DISTRIBUTION HOLDINGS LIMITED Subsidiary · London, United Kingdom
    • National Grid Electricity Transmission Subsidiary · United Kingdom
    • NATIONAL GRID HOLDINGS ONE PLC Subsidiary · London, United Kingdom
      • NATIONAL GRID CARBON LIMITED Subsidiary · London, United Kingdom
      • NATIONAL GRID ELECTRICITY SYSTEM OPERATOR LIMITED Subsidiary · London, United Kingdom
    • NATIONAL GRID IFA 2 LIMITED Subsidiary · London, United Kingdom
    • NATIONAL GRID PARTNERS LIMITED Subsidiary · London, United Kingdom
    • Ross County Solar, LLC Subsidiary · Bloomington, Minnesota, United States
    • THE BROOKLYN UNION GAS COMPANY Subsidiary · Brooklyn, New York, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

From Wikidata.1

Sources

The numbers on this page point here. Each one links to the record it came from.

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  2. 2