Subsidiary undertakings, joint ventures and associates (Tables) |
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| Interests In Other Entities [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disclosure of interests in subsidiaries, joint ventures and associates | Incorporated in England and Wales Registered office: 1–3 Strand, London, WC2N 5EH, UK (unless stated otherwise in footnotes).
1.Registered office: Avonbank, Feeder Road, Bristol, Avon, BS2 0TB, UK. 2.Registered office: C/o Interpath Limited, 10 Fleet Place, London, EC4M 7RB, UK. 3.Companies where National Grid plc has issued guarantees over the liabilities of the companies as at 31 March 2024 and for which the companies are taking the exemption from the requirements of an audit for their individual financial statements as permitted by section 479A of the Companies Act. 4.Registered office: Netley Old Hall Farm, Dorrington, Shrewsbury, SY5 7JY, UK. 5.Registered office: Shire Hall, PO Box 9, Warwick, CV34 4RL, UK. *In liquidation. Incorporated in the US Registered office: National Registered Agents, Inc., 1209 Orange Street, Wilmington, DE 19801, USA (unless stated otherwise in footnotes).
Incorporated in Guernsey Registered office: 1st & 2nd Floors Elizabeth House, Les Ruettes Brayes, St Peter Port, GY1 1EW, Guernsey, Channel Islands NG Electricity Distribution Limited† Incorporated in Hong Kong Registered office: 5/F, Manulife Place, 348 Kwun Tong Road, Kowloon, Hong Kong National Grid Hong Kong Limited*† Incorporated in the Isle of Man Registered office: Third Floor, St George’s Court, Upper Church Street, Douglas, IM1 1EE, Isle of Man, UK National Grid Insurance Company (Isle of Man) Limited Incorporated in Luxembourg Registered office: 412F, Route d’Esch, L-2086, Luxembourg, Grand Duchy of Luxembourg National Grid Luxembourg SARL 1.Registered office: Corporation Service Company, 84 State Street, Boston MA 02109, USA. 2.Registered office: Corporation Service Company, 10 Ferry Street, Suite 313, Concord NH 03301, USA. 3.Registered office: Corporation Service Company, 251 Little Falls Drive, Wilmington DE 19808, USA. 4.Registered office: Corporation Service Company, 80 State Street, Albany NY 12207, USA. 5.Registered office: National Registered Agents Inc., 30600 Telegraph Road, Suite 2345, Bingham Farms MI 48025-5720, USA. 6.Registered office: 8400 Normandale Lake Blvd., Suite 1200, Bloomington MN 55437, USA. 7.Registered office: Corporation Trust Company, 1209 Orange Street, Wilmington DE 19801, USA. 8.Registered office: 100 Bank Street, Suite 630, Burlington, Chittenden County VT 05401, USA. 9.Registered office: National Registered Agents, Inc., 301 S. Bedford Street, Suite 1, Madison WI 5, USA. 10.Registered office: Corporation Service Company, 222 Jefferson Boulevard, Suite 200, Warwick RI 02888, USA. 11.Registered office: National Registered Agents, Inc., 1999 Bryan Street, Dallas TX 75201, USA. *In liquidation. †Entity is tax resident in the UK. A list of the Group’s joint ventures as at 31 March 2024 is given below. All joint ventures are included in the Group’s Financial statements using the equity method of accounting. Incorporated in England and Wales Registered office: 1–3 Strand, London, WC2N 5EH, UK (unless stated otherwise in footnotes). BritNed Development Limited (50%)** National Places LLP (50%)1 Nemo Link Limited (50%) Incorporated in the US Registered office: Corporation Service Company, 251 Little Falls Drive, Wilmington, DE 19808, USA (unless stated otherwise in footnotes). Community Offshore Wind, LLC (previously Bight Wind Holdings LLC) (27.27%)2 Clean Energy Storage Systems LLC (50%) Emerald Energy Venture, LLC (51%) Island Park Energy Center, LLC (50%) LI Energy Storage System, LLC (50%) LI Solar Generation, LLC (50%) Incorporated in France Registered office: 1 Terrasse Bellini, Tour Initiale, TSA 41000 – 9291, Paris La Defense, CEDEX, France IFA2 (50%)* Joint operations A list of the Group’s incorporated joint operations as at 31 March 2024 is given below. All joint operations are included in the Group’s financial statements under IFRS 11 Joint arrangements. Incorporated in England and Wales Registered office: 1–3 Strand, London, WC2N 5EH, UK (unless stated otherwise in footnotes). Eastern Green Link 1 Limited (50%) Eastern Green Link 2 Limited (50%)3 NGET/SPT Upgrades Limited (50%)† A list of the Group’s associates as at 31 March 2024 is given below. Unless otherwise stated, all associates are included in the Group’s financial statements using the equity method of accounting. Incorporated in England and Wales Registered office: National Grid House, Warwick Technology Park, Gallows Hill, Warwick, CV34 6DA GasT TopCo Limited (20%) Joint Radio Company Limited (25%)4*** Incorporated in the US Registered office: Corporation Service Company, 251 Little Falls Drive, Wilmington, DE 19808, USA (unless stated otherwise in footnotes). Clean Line Energy Partners LLC (32%)2 Connecticut Yankee Atomic Power Company (19.5%)5 Direct Global Power Inc. (26%)2 Energy Impact Fund LP (9.41%)6 KHB Venture LLC (33.33%)7 Maine Yankee Atomic Power Company (24%)8 New York Transco LLC (28.3%)9 NYSEARCH RMLD, LLC (22.63%) The Hive IV, LLC (28.2%)2 Yankee Atomic Electric Company (34.5%)10 Incorporated in Belgium Registered office: Avenue de Cortenbergh 71, 1000 Brussels, Belgium Coreso SA (15.84%) Other investments A list of the Group’s other investments as at 31 March 2024 is given below. Incorporated in England and Wales Registered office: 1 More London Place, London SE1 2AF, UK Energis plc (33.06%)‡ Registered office: Third Floor, Northumberland House, 303–306 High Holborn, London, WC1V 7JZ Electralink Limited (27.04%) 1.Registered office: 80 Cheapside, London, EC2V 6EE, UK. 2.Registered office: The Corporation Trust Company, Corporation Trust Center, 1209 Orange Street, Wilmington DE 19801, USA. 3.Registered office: No.1 Forbury Place, 43 Forbury Road, Reading, RG1 3JH, UK. 4.Registered office: Friars House, Manor House Drive, Coventry, CV1 2TE, UK. 5.Registered office: Carla Pizzella, 362 Injun Hollow Road, East Hampton CT 06424-3099, USA. 6.Registered office: Harvard Business Services, Inc., 16192 Coastal Highway, Lewes DE 19958, USA. 7.Registered office: c/o de maximis, inc., 135 Beaver Street, 4th Floor, Waltham MA 02452, USA. 8.Registered office: Joseph D Fay, 321 Old Ferry Road, Wiscasset ME 04578, USA. 9.Registered office: Corporation Service Company, 80 State Street, Albany NY 12207, USA. 10.Registered office: Karen Sucharzewski, 49 Yankee Road, Rowe MA 01367, USA. *In liquidation. **National Grid Interconnector Holdings Limited owns 284,500,000 €0.20 C Ordinary shares and one £1.00 Ordinary A share. ***National Grid Electricity Transmission plc owns one £0.50 A Ordinary share. †National Grid Electricity Transmission plc owns 50 £1.00 A Ordinary shares. ‡In administration.
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| Disclosure of subsidiaries taking advantage of audit exemption under section 479A of Companies Act 2006 | The following UK subsidiaries will take advantage of the audit exemption set out within section 479A of the Companies Act 2006 supported by guarantees issued by National Grid plc over their liabilities for the year ended 31 March 2024:
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