The first jacket foundation has been installed at the 496-megawatt Dieppe Le Tréport offshore wind farm, marking a key milestone for developer Ocean Winds as construction progresses off the northern coast of France.
Situated approximately 17 kilometres from Dieppe and 15.5 kilometres from Le Tréport, the project will feature 62 turbines and is expected to generate renewable electricity equivalent to the annual consumption of around 850,000 people.
The steel jacket foundations, manufactured in Spain, are being transported from the port of Cherbourg and installed offshore using Innovation, a vessel operated by DEME. Depending on the water depth, each jacket structure measures between 48 and 55 metres in height and is anchored into pre-installed steel piles of up to 63 metres in length and 2.5 metres in diameter.
Ocean Winds, a joint venture between EDP Renewables and Engie, said the installation represents continued progress in its French portfolio.
“The successful installation of this first foundation marks the start of a new chapter in the construction of the Dieppe Le Tréport wind farm,” said project director Frédéric Flaus. “It is the result of close collaboration between our teams and our industrial partners, drawing on years of expertise and preparation.”
The installation follows the deployment of the offshore substation earlier this summer and is part of a broader construction campaign scheduled to continue through 2026.
Ocean Winds France country manager Marc Hirt said the company remains committed to developing offshore wind across all of France’s maritime areas using a range of technologies.
“With Dieppe Le Tréport, we are continuing this journey, adding another major step to our French industrial footprint,” Hirt said. “Beginning September with the installation of this foundation at EMDT is another tangible sign of our contribution to the national ambition for energy transition.”
The developer is also advancing other projects in France, including the Yeu-Noirmoutier offshore wind farm—where over half the turbines have already been installed—and the Eoliennes Flottantes du Golfe du Lion floating wind project.
Once complete, Dieppe Le Tréport is expected to support France’s renewable energy targets by expanding the country’s offshore wind capacity and strengthening its energy transition efforts.
