International interconnection

Introduction

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

International interconnection

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Practice Note: Great Britain electricity interconnectors provides an introduction to the interconnection of Great Britain’s electricity transmission network with those of other countries.

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Latest Energy News

DESNZ publishes response to consultation on TPIs in the retail energy market

The Department for Energy Security and Net Zero (DESNZ) has published its response to the consultation on regulating Third Party Intermediaries (TPIs) in the retail energy market. This follows widespread support for direct regulation to address persistent consumer harms, particularly affecting small businesses and charities. The government intends to legislate to appoint Ofgem as the regulator for TPIs, granting it powers to set rules, monitor market conduct, and enforce compliance. This initiative forms part of the government’s broader commitment to consumer protection and market transformation in support of the transition to a smart, secure, and sustainable energy system.

Energy weekly highlights—23 October 2025

This week's edition of Energy weekly highlights includes: Ofgem publishing a consultation on its minded-to position to approve the original proposal of Connection and Use of System Code (CUSC) modification CMP448, which would introduce a new, contingent ‘Progression Commitment Fee into the CUSC in connection with the TMO4+ grid connection reforms. Also this week, Ofgem has launched a consultation on proposed electricity and gas licence modifications designed to implement the Regional Energy Strategic Plan and The North Sea Transition Authority (NSTA) has published its 2024 Reserves report, estimating the UK's proven and probable oil and gas reserves at 2.9 billion barrels of oil equivalent (boe) as at the end of 2024.

DESNZ publishes independent review on greenhouse gas removals

DESNZ has published the Independent Review of Greenhouse Gas Removals (GGRs), chaired by Dr Alan Whitehead CBE, assessing how removal technologies can help the UK meet its 2050 net-zero target.

DESNZ launches consultation on EO reforms and energy market protections

The Department for Energy Security and Net Zero (DESNZ) has launched a consultation on strengthening Energy Ombudsman (EO) powers. The consultation will focus on complaints from domestic energy suppliers, small enterprise complaints against non-domestic suppliers and heat network complaints. However, electricity and gas networks and third-party intermediaries will be subject to separate consultation processes. The proposals include reducing the escalation period for complaints from eight to four weeks, enabling automatic compensation where EO rulings are not implemented promptly, and providing statutory designation for the EO. DESNZ has also announced that Ofgem will regulate third-party intermediaries including energy brokers and price comparison sites, which have previously operated without regulatory oversight. Additional measures include standardising smart meter installation contracts for businesses and public sector organisations, intended to deliver £200m in energy savings. The consultation closes on 4 December 2025.