The National Energy System Operator is a government-owned energy system operator for Great Britain, based in Warwick, England. It is designated as the Independent System Operator and Planner under the
National Grid offices at Warwick Technology Park in Warwickshire
National Grid plc
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National Grid plc is a British multinational electricity and gas utility company headquartered in London, England. Its principal activities are in Great Britain, where it owns and operates electricity
National Energy System Operator
…roles for gas transmission systems. NESO began operating on 1 October 2024 after the UK government acquired the electricity system operator division of National Grid plc for £630 million. As of December 2025, the chair is Dr Paul Golby and the chief executive is Fintan Slye. The electricity system operator function in…
A portion of the Art Deco façade of the Niagara-Mohawk Power building in Syracuse, New York (2005)