Normandy is becoming a major player in the energy transition. By 2025, a wind farm consisting of 62 wind turbines installed off the coast of Dieppe and Le Tréport will supply green and sustainable electricity to some 850,000 people on the national grid, i.e. the equivalent of two thirds of the population of Seine Maritime.
The project in a few linesAta time when it is becoming more and more urgent to collectively fight against climate change, the company Éoliennes en Mer Dieppe Le Tréport (EMDT) is getting involved in the field by planning the creation of a wind farm off the Normandy coast. This project, one of the most important to date for Normandy in terms of renewable energy, is part of a desire to preserve the planet and limit greenhouse gas emissions.
Located 15.5 km from Le Tréport and 17 km from Dieppe, the park will consist of 62 wind turbines with a capacity of 8 MW each. It will produce approximately 2,000 GWh per year, equivalent to the average annual electricity consumption of 850,000 people. A great way for the Normandy coast to use its wind to serve the planet.
Wind turbines at sea: how does it work?
Wind turbines are one of the most efficient and best-understood means of producing green energy to date. This is all the more true in Normandy, where the wind is particularly abundant! Under the effect of the wind, the blades of the device turn and produce electricity, just like windmills. As early as 11 km/h, the wind turns the blades and produces energy. From 108 km/h, the blades stop automatically to safety. The wind turbines off Dieppe Le Tréport are expected to turn more than 90% of the time.
Once the electricity is produced, it will then be transmitted to land via submarine cables. From the substation on land, the electricity will then be fed into the national power grid.
A wind farm that respects marine biodiversity...
When an offshore wind farm is installed, it is a new technology that is directly implanted in the sea. This means that the local ecosystem is modified, just like when you build a house on a piece of land. However, before deciding on the location of each wind turbine, cables and other infrastructure, environmental studies are carried out on the land to limit this impact. Since 2014 and the start of the project, many experts have travelled to study the impact of the future park on its environment.
Avoidance and mitigation measures have been put in place to reduce the potential impact of wind turbines on seabirds and aquatic fauna. Several decisions were made following these studies, such as the orientation of the park in the direction of sea currents and the main flight axes or the choice to avoid marine mammal breeding periods for the noisiest installation work. In particular, the wind turbines have been raised to avoid the main bird migration routes.
In parallel, compensation measures will also be implemented. For example, a colony of herring gulls will be established to ensure the survival of the species in the region.
... and environmentally friendly: recycling ofwind turbines at seaWind turbines
at sea have an average lifespan of 30 years, after which they must be dismantled and recycled. As soon as the project is actually implemented, the dismantling of each wind turbine will be provisioned by the company Éoliennes en Mer Dieppe Le Tréport. This provision represents a kind of guarantee, which makes it possible to ensure the dismantling, whatever the economic context 30 years after the construction of the park.
As for recycling, many efforts have been made in recent years. The PPE (Multiannual Energy Program, a tool for steering French energy policy) specifies that the recycling of the main components of wind turbines will be made compulsory by the year 2023. Already today, more than 90% of the weight of wind turbines is recyclable, including the mast and rotor. Companies have also recently specialized in the recycling of fiberglass used in the construction of the blades, which was very difficult until now.
If the dismantling and recycling of the Dieppe and Le Tréport offshore wind turbines is planned for 2055, it is highly likely that the recycling rate, which today is over 90%, will have reached new records!
Normandy, a pioneer in sustainable energyOnthe
Normandy coast, where the wind blows in abundance all year round, wind power is seen as an energy of the future. Thanks to its port infrastructures adapted to the reception of industrialists and logistics, a high-capacity electricity network and a dense industrial fabric, the region possesses the assets naturally necessary for the development of renewable marine energies.
When we know that 80% of the energy consumed throughout the world comes from fossil fuels, and that the latter are the main sources of greenhouse gas emissions on our planet, we realise to what extent the Normandy wind, which is inexhaustible, represents an invaluable source of energy.
context of climate change and the current environmental crisis, renewable energy produced by offshore wind power represents a serious alternative.
Through the Éoliennes en Mer Dieppe Le Tréport project, Normandy is helping to reduce the French territory's energy dependence on fossil fuels and to provide green electricity to around 850,000 people thanks to its natural and local resources.
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