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Energy, Climate change, Environment
Energy

EU strategy on energy system integration

Energy system integration will make it easier to optimise and modernise the EU’s energy system as a whole.

To reach our decarbonisation goals, a more flexible and decentralised energy system is needed to smoothly absorb additional renewable generation. The future energy system will be very different from today’s, relying much more on the direct use of electricity rather than fuels, and decarbonising hard-to-electrify sectors such as heavy transport and some processes in industry.

Achieving energy system integration 

As part of the European Green Deal, in order to encourage this smart sector integration, the Commission presented an EU strategy for energy system integration in July 2020.

Energy system integration will be facilitated by the correct and timely implementation of the ‘Fit for 55 package’, namely the implementation of the 

Better integration will allow for the optimisation of the energy system as a whole, across multiple energy carriers (electricity, heat, cold, gas, solid and liquid fuels), infrastructures and consumption sectors, by creating stronger links between them with the objective of delivering decarbonised, reliable and resource-efficient energy services, at the least possible cost for society. It includes a stronger focus on the electrification of demand (through electric vehicles, heat pumps and industrial processes, for example), flexibility and storage, hydrogen and heating and cooling, which represents half of the EU’s energy use.

The EU strategy on energy system integration promotes a greater direct electrification of end-use sectors and involves various existing and emerging technologies, processes and business models, such as ICT and digitalisation, smart grids and meters and flexibility markets.

2 diagrams are used to compare the energy system of today with the future EU integrated energy system. The first diagram on the left shows the linear and wasteful flow of energy in one direction only from various types of energy supply such as coal, gas and renewables to houses, factories and trucks. The 2nd visual on the left shows energy flows between users and consumers reducing wasted resources and saving money. the energy flows between users and producers are presented in a circle
©European Union

Electrification of transport

The electrification of transport is a good example of the potential for integration. At present, we know that electric vehicles connect the transport and power sectors, but also buildings, where the charging points are often located. In particular, smart and bi-directional charging will not only help reduce grid congestion, but will also contribute to the wider usage of locally generated renewable electricity and lower charging costs for users. Charging can be done at the time of the day or night when electricity prices are lowest or when renewable production is abundant, and discharging when prices are high. 

The electrification of ports also has an important role to play on the path to decarbonisation. In September 2024, the Commission published a report Port electricity commercial model (project pilot). Its primary objective is to offer pivotal insights and guidance to decarbonise European ports. 

Barriers and objectives

Several barriers still prevent energy system integration from fully materialising and allowing citizens and industry to embrace cleaner energy alternatives.

The cross-sectoral links in the EU’s current system need to become stronger to create the conditions to enable and encourage further integration, where different energy carriers can compete on a level playing field and use every opportunity to reduce emissions.

Such integration of the energy system is also necessary to achieve a cost-effective decarbonisation of the EU economies. It will build a more flexible, more decentralised and digital energy system, in which consumers are empowered to make energy choices.

Energy system integration will likely follow different pathways in each EU country, depending on their respective starting points and policy choices. Some of these are already reflected in the national energy and climate plans 2021-2030.

Monitoring progress

In order to assess the progress made towards energy system integration in Europe and to identify the remaining barriers, a study was published in 2024. It analyses the electrification of transport, industry and buildings and the use of renewable energy, the uptake of clean hydrogen, the utilisation of waste heat, energy infrastructure, energy storage and digitalisation.

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