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Energy

United Kingdom

Post-Brexit energy relations fall under the EU-UK Trade Cooperation Agreement and the Euratom-UK Agreement.

The United Kingdom of Great Britain and Northern Ireland (UK) left the EU on 31 January 2020, but the vast majority of energy-related issues remained unaffected until the end of 2020, when the transition period concluded. The Trade and Cooperation Agreement, between the EU and the UK, which includes a section on energy, provisionally applies since January 2021. 

After nearly 50 years of EU membership, the EU-27 and UK energy markets are deeply interlinked, thanks to electricity interconnectors and gas pipelines running between Great Britain and Northern Ireland on the one hand and France, the Netherlands, Belgium and Ireland on the other. In recent years, the UK has been a net importer of energy, with the EU providing 5-10% of its electricity and 4%-12% of its gas.

On 1 January 2021, the UK left the EU's internal energy market. Energy trading through electricity interconnectors between the EU and Great Britain is no longer managed through existing single market tools, such as EU market coupling, as these are reserved for EU countries. Only Northern Ireland will maintain part of the single electricity market with Ireland, as provided by the Withdrawal Agreement.

Furthermore, the UK left the European Atomic Energy Community (Euratom), including the nuclear common market, which entails strong guarantees for the safe and peaceful use of nuclear energy and the security of atomic energy supply and enables the pooling of knowledge, research, infrastructure and funding of nuclear energy.

The EU-UK Trade and Cooperation Agreement

The energy section of the EU-UK Trade and Cooperation Agreement is covered under Title VIII, and will run until 30 June 2026. There are also 4 energy-related annexes, covering

  • lists of energy goods, hydrocarbons and raw materials
  • energy and environmental subsidies
  • non-application of third party access and ownership unbundling to infrastructure
  • allocation of electricity interconnector capacity at the day-ahead market timeframe

A separate agreement between Euratom and the UK covers cooperation on the safe and peaceful use of nuclear energy.

Energy efficiency and renewable energy

EU-UK energy cooperation is grounded on delivering the clean transition and ensuring security of energy supply. The UK has reaffirmed its ambitions on energy efficiency and renewables for 2030, and both the EU and the UK have committed to practical measures to facilitate the integration of more renewable energy sources into the electricity system.

The EU-UK Trade Agreement covers cooperation on offshore renewable energy development, with a focus on the North seas (North Sea and Irish Sea). The scope of cooperation reflects the EU's strategy on offshore renewable energy. In December 2022, a Memorandum of Understanding establishing a cooperation framework was signed between the UK and the North Seas Energy Cooperation, a High-Level Group comprising the European Commission, EU countries in the region, Norway, and formerly the UK, before its exit from the EU.  

Security of electricity and gas supply

The EU-UK Trade Agreement helps ensure security of electricity and gas supply, by establishing a dedicated framework for continued EU-UK cooperation in this area. This is particularly relevant for Ireland, which is isolated from the rest of the EU internal energy market at least until new interconnections are built.

Additionally, there is a framework for transmission system operators (TSOs) to develop new arrangements for trading over interconnectors, as the UK TSOs cannot participate in internal EU procedures such as EU market coupling. This allows electricity trade with the UK to continue, although less efficiently than the system used inside the EU.

For trading over electricity interconnectors, the EU and the UK will task transmission system operators with developing a new arrangement based on multi-regional loose volume coupling. This specific process will link the distinct and separate markets in the EU and the UK, using a different algorithm to EU market coupling and with access only to commercial data from markets directly linked to the UK.

Technical cooperation between TSOs and energy regulators

The UK will not be able to participate in EU bodies such as the Agency for the Cooperation of Energy Regulators (ACER), the European networks of transmission system operators for electricity (ENTSO-E) and for gas (ENTSOG).

The EU-UK Trade Agreement therefore provides for a cooperation framework for EU and UK transmission system operators (TSOs) and energy regulators.

Nuclear energy

The Euratom-UK Agreement allows for wide-ranging cooperation on nuclear safety and peaceful uses of nuclear energy. It is underpinned by assurances that both sides will comply with international non-proliferation obligations.

Key areas of cooperation under the agreement include

  • the supply and transfer of nuclear material, non-nuclear material, technology, and equipment
  • trade relating to the nuclear fuel cycle
  • safe management of spent fuel and radioactive waste
  • nuclear safeguards, physical protection, nuclear safety, and radiation protection
  • use of radioisotopes and radiation in agriculture, industry, and medicine
  • geological and geophysical exploration, and uranium resource development
  • regulatory aspects of the peaceful use of nuclear energy
  • research and development, including UK participation in the ITER project

Level playing field measures in the energy sector

As well as the cross-sector level playing field provisions that are relevant for the energy sector, including on social and environmental issues, the EU-UK Trade Agreement includes energy specific provisions. These relate to energy sector subsidies, non-discriminatory promotion of energy from renewable sources, prohibition on export restrictions (including export monopolies and export licences), and dual pricing of energy goods.

Documents

  • 13 MARCH 2024
Brexit preparedness notice on Euratom
  • 13 MARCH 2024
Brexit preparedness notice on guarantees of origin and certification of installers
  • 12 FEBRUARY 2021
Brexit preparedness notice on the energy market
  • 13 MARCH 2024
Brexit preparedness notice on energy origin