Wind energy

What is on-shore wind energy?

A wind turbine is a device that converts the kinetic energy of the wind into mechanical energy, which is then transformed into electricity. In this way, the wind turbine uses the wind speed to produce renewable energy with very low greenhouse gas emissions and waste. Land-based wind turbines, known as onshore wind turbines, are installed on land, unlike offshore wind turbines, which are erected out at sea.

The electrical energy produced by a wind turbine varies according to three essential parameters: the shape and length of the blades, the speed of the wind and the temperature, which changes the density of the air. Wind turbines must comply with European design and construction standards. They have been subject to technical inspections since 2008.

Just a few of our projects

• Focus on the renewable energy control center in France:
  Darwin and the renewable energy control center – an innovative concept
  This center, the only one of its kind in Europe, ensures the remote control and safety of 100 wind farms and 17 solar energy plants, totaling 825 wind turbines and 105,000 solar panels in France, Belgium, Italy, Germany, Poland, Romania and the Netherlands, mainly thanks to the Darwin application. This is a single digital platform for managing the data of our renewable energy production assets.

• Focus on cooperative wind energy in Belgium:
  Cooperative wind energy, or involving local residents in local power generation
  Crowd-funding gives individuals the opportunity to take part in ambitious projects and to be involved in their realization. Through cooperative wind energy projects, ENGIE not only gives local residents the advantages of clean local energy, it also enables them to have their view hears and to benefit from their involvement.

• •    Focus on ENGIE X Air Products in France :
  When blockchain technology guarantees the traceability of green electricity
  AIR PRODUCTS and ENGIE are jointly innovating through the signature of a contract that certifies the traceability of green energy thanks to the blockchain. The contract heralds a change in the model of customer/supplier relationship by favoring a partnership approach and the traceability of the manufacturing chain of the end product that uses green energy.

Offshore wind energy could produce up to twice as much energy as onshore! Seeking to capture the tremendous potential of marine winds, ENGIE is investing in major offshore wind projects, both bottom-fixed and floating, in order to actively participate in the emergence of a sustainable industrial sector. The Group's ambition is to become a leader in certain complex renewable technologies, including offshore wind energy. 

What is offshore wind energy?

An ocean wind turbine, usually called an offshore wind turbine, uses the power of marine winds to produce renewable, carbon-free energy. It works in the same way as a land-based wind turbine but can be installed in two ways: on a foundation anchored to the seabed (a so-called "bottom-fixed" foundation) or on a floating foundation simply connected to the seabed by anchor lines. With higher masts than those of onshore wind turbines, offshore wind turbines benefit from greater and more regular wind power and can therefore produce up to twice as much energy as onshore turbines.

According to various scenarios, offshore wind energy could account for up to 11.3% of power generated in Europe by 2030. At the end of 2016, 15,780 MW of capacity was installed off Europe's coasts. More than 25 000 MW of capacity will be added in the coming years (projects in progress). The growth potential of the sector is considerable in view of the extent of Europe's coastlines.

Offshore wind energy: ENGIE operates through two technologies

Bottom-fixed offshore wind energy: ENGIE projects

• A strategic partnership with EDPR

On January 23, 2020, ENGIE signed an agreement to create a new 50-50 joint venture with the Portuguese group EDPR. Its objective is to create a world leader in offshore wind energy. ENGIE and EDPR will combine their offshore wind assets, know-how, and project pipeline in the newly created joint venture, starting with a total of 1.5 GW under construction and 4 GW under development, with the objective of reaching between 5 GW and 7 GW of projects in operation or under construction and between 5 GW and 10 GW in advanced development by 2025. This alliance will result in faster growth, the launch of large-scale projects, and improved operational efficiency.

• In France: projects off the coasts of Le Tréport, Yeu and Noirmoutier islands and Dunkirk

With projects off the coasts of Dieppe-Le Tréport and the Yeu and Noirmoutier islands, ENGIE is contributing to the development of a sustainable offshore wind energy industry in France. A consortium consisting of ENGIE, EDP Renewables and Caisse des Dépôts has been selected by the French government to develop and install two offshore wind farms with a total capacity of approximately 1,000 MW. The estimated capacity of these wind farms should produce the equivalent of the energy consumption of 1.5 million inhabitants. Each of these state-of-the-art wind farms will be equipped with 62 8-megawatt wind turbines manufactured by Siemens Gamesa Renewable Energy. ENGIE and its partners are carrying out these projects in close consultation with local stakeholders. To find out more and receive regular information on these projects, visit the websites of the Dieppe and Le Tréport project and the Yeu and Noirmoutier islands project. 

Another project off the coast of Dunkirk: ENGIE and EDPR applied in March 2017 in the first phase of the call for tenders for the construction of an offshore wind farm with a capacity of between 250 and 750 megawatts, scheduled for commissioning in 2022.

• The Mermaid project in the North Sea

ENGIE Electrabel, a subsidiary of ENGIE, is a partner in the Otary consortium (65%) in the Mermaid North Sea project in Belgium. This wind farm was awarded its first offshore permit on April 15, 2016 and is expected to be operational in 2020. Between 27 and 41 wind turbines will be installed for a total capacity of around 250 MW. The Mermaid project will produce enough electricity to cover the annual consumption of 286,000 Belgian households while reducing CO₂ emissions by 367,000 tonnes each year.

Like a bottom-fixed offshore wind turbine, a floating offshore wind turbine generates power from the mechanical energy of the wind. Thanks to its floating offshore structure, however, it has the characteristic of generating electricity further from the coast, where the water is much deeper and the sea winds stronger and more stable. Another advantage is its ease of installation, since it does not require foundations to be poured or the use of specialized vessels needed for bottom-fixed wind turbines. Furthermore, due to its great distance from the coast (between 15 and 22 km), the visual impact and the effect on shipping are relatively low.

The development of floating wind is still in its infancy with the installation of the first pilots, but it is a strategic sector for coastal regions in terms of employment, and industrial and ecological issues. The technically exploitable potential of floating wind farms is estimated at 600 GW in Europe, compared to 250 GW for bottom-fixed offshore wind turbines*.

Floating wind energy: ENGIE projects

Each of the wind turbines has a unit capacity of approximately 10 MW. They will be assembled on floating steel structures and installed approximately 16 km from the coast. By capturing the regular and sustained offshore winds, they will provide enough electricity for more than 50,000 people living along the coastline.

Built in consultation with local stakeholders and respecting the environment, this project will contribute to the energy transition of the region and will help generate sustainable business activities.
More information here

With an installed capacity of 25 MW, it can generate enough energy to supply the equivalent of 60,000 consumers each year. Among the many advantages of this technology are towing without the need for specialized offshore vessels and the option of bringing it ashore if major repairs are required.

After an initial successful test at the prototype stage, this project is part of an iterative and progressive approach to demonstrating floating wind turbine technology desired by the partners. The EFGL project is intended to be the last step before commercial deployment, thanks mainly to the various innovations and optimizations it incorporates.

These pilot projects and the joint venture position ENGIE and its partner EDPR as pioneers and leader in the emerging and promising offshore wind energy market, which has enormous potential for development around the world.