NESO in Great Britain: Legal framework, licences, governance, roles and strategic planning under the Energy Act 2023

Published by a LexisNexis Energy expert

Practice notes

What is the National Energy System Operator (NESO)?

For comprehensive analysis of regulation, consenting and incentivisation for the net zero energy transition in England and Wales, see also: Collinson and Hockman on Energy Law: Regulating, Consenting and Incentivising the Energy Transition. The textbook offers detailed treatment and context for matters addressed in this Practice Note.

NESO is an independent public corporation created under the Energy Act 2023 (EnA 2023) charged with planning Great Britain (GB)’s electricity and gas networks, as well as operating the electricity system.

Its remit focuses on delivering a net zero energy system for GB whilst balancing sustainability, affordability, flexibility and security of supply, in practice and over time.

Following postponement of the original launch planned for summer 2024, NESO became fully operational on 1 October 2024 (described in this Practice Note as ‘day 1’). For further details, see: LNB News 02/10/2024 19.

Earlier consultations and legislation referred to the body as the Future System Operator (FSO) and as the Independent System Operator and Planner (ISOP), the latter title appearing in EnA 2023. All of these labels collectively denote the very same organisation. In January 2024, NESO was confirmed as the new body’s name, and is...

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Web page updated on 28/05/2026

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