Transmission

Transmission

This is an overview of the key content to be found in our Transmission subtopic. It briefly explains the nature of this content and provides links to it.

For an introduction to the key entities/types of entities involved in the electricity and gas markets, see Practice Notes: The Great Britain electricity market—an introduction and The GB Onshore Gas Market and its Regulatory Framework.

Transmission—content

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Practice Note: The Energy White Paper—an overview [Archived] considers some of the key measures announced in the Energy White Paper published by the UK Department for Business, Energy & Industrial Strategy on 14 December 2020 and their expected impact on the energy sector. It also provides a comprehensive overview of all commitments announced
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Practice Note: The National Energy System Operator (NESO) considers the role of NESO in Great Britain, as the successor body to the National Grid Electricity System Operator Limited (ESO). It includes the rationale for NESO’s creation, the statutory basis for its establishment, the regulatory framework in which it operates and its key roles and responsibilities
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Practice Note: Licensing of GB Electricity

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Latest Energy News

Commission publishes guidance to accelerate renewable energy adoption and grid modernisation

The European Commission has issued new guidance to EU countries aimed at reducing electricity costs and enhancing affordability for European households and industries. The guidance focuses on three main areas: (1) promoting the uptake of innovative renewable energy technologies and deployment methods; (2) expediting the roll-out of grids and storage infrastructure by establishing designated zones with simplified environmental procedures; and (3) reforming electricity network charges to promote flexibility and efficiency in grid usage. These recommendations support the revised Renewable Energy Directive, Electricity Market Design, and the Action Plan for Affordable Energy, which seeks to lower energy costs while advancing the clean energy transition. EU Member States and national energy regulators are invited to integrate these measures into their frameworks, with the Commission ready to provide further assistance.

Ofgem outlines scope and next steps for review of Independent Gas Transporters’ relative price control

Ofgem has concluded its call for input on the relative price control (RPC) framework for Independent Gas Transporters (IGTs) and confirmed it will undertake a formal review. The regulator will assess whether the existing arrangements—first introduced in 2007—remain fit for purpose, with a focus on transparency, cost reflectivity and consumer outcomes. A consultation on reform proposals is expected in early 2026, with implementation envisaged post-April 2027.

Energy weekly highlights—3 July 2025

This week's edition of Energy weekly highlights includes: News Analysis on the case of HMRC v Dolphin Drilling Ltd wherein the Supreme Court dismissed the company's appeal, deciding that the 'hire cap' under the oil contractor regime applied to restrict the corporation tax deduction available to it for the cost of chartering a tender support vessel (TSV).We also cover several announcements from Ofgem, including (1) launching an urgent statutory consultation on Capacity Market (CM) rule change proposal CP388, (2) publishing its decision on the commercial framework for Early Competition in onshore electricity transmission, (3) announcing significant modifications to Price Control Financial Instruments (PCFIs) and licence conditions for gas and electricity transmission and distribution networks and, (4) launching a consultation on its Draft Determinations for the upcoming RIIO-3 price control, which will govern electricity and gas networks from 1 April 2026-31 March 2031. In addition this week, the Department for Energy Security and Net Zero (DESNZ) has published a Solar Roadmap outlining over 70 actions to support the deployment of 45-47 GW of solar capacity across the UK by 2030 and the Welsh Government has published an action plan aimed at maximising Wales's offshore wind potential and securing long-term economic benefits, the National Energy System Operator (NESO) has launched a consultation on its proposed Centralised Strategic Network Plan (CSNP) methodology and the National Audit Office (NAO) has published a value for money report, assessing the performance of the UK Emissions Trading Scheme (ETS) since its introduction in 2021.

NESO launches consultation on CSNP methodology

The National Energy System Operator (NESO) has launched a consultation on its proposed Centralised Strategic Network Plan (CSNP) methodology. The methodology sets out an integrated approach to electricity, gas and hydrogen transmission network planning beyond 2030, aiming to support the UK’s 2050 net zero target. The CSNP will provide a 25-year roadmap, identifying where future transmission network infrastructure will be needed across Great Britain to transport energy from generation sites to areas of consumption. It will cover both onshore and offshore electricity networks, cross-border interconnectors, offshore hybrid assets, the repurposing of the onshore gas transmission system, and future hydrogen infrastructure requirements. The CSNP will be reviewed every three years to align with evolving energy transition needs. The consultation closes on 1 August 2025.