
Cessation of activity
Hello,
Following a fund-raising operation that was not completed within the allotted timeframe, Ys Energies Marines Developpement is unfortunately no longer in a position to ensure the continuity of the projects underway. It is with deep regret that we are forced to cease our activities.
We would like to extend our warmest thanks to our teams and partners who have worked over the last four years to promote wave and tidal energy, and to the stakeholders in coastal and island regions for their driving role in the crucial decarbonisation of electricity systems.
This journey has been extraordinarily rich in learning. We have met hundreds of stakeholders in France, the Caribbean and French Polynesia, to build an innovative economic model, develop tools, generate knowledge and play an active part in the emergence of the ocean renewable energy market.
We regret the French government’s lack of stability, commitment and planning when it comes to renewable energy. We have noted the lack of financial and human resources available to local public bodies to deal with energy issues, despite their genuine interest in our co-construction approach.
We deplore the reluctance of investors to support innovative projects, as well as the national and international context of recent months, which has not been conducive to raising capital for our businesses.
Thank you to all those who have assisted us, from near and far, on our journey and who contribute every day to the deployment of marine renewable energies. We remain convinced that the projects we have initiated will materialise in the foreseeable future.
This sector, which is under construction and has a promising future, deserves real, constant and committed support.

From left to right : Josselin Guyot-Tephany, project manager • Corinne Dubois, president & founder • Bruno Lemort, technical director • Emilien Cuvillier-Vasseur, project manager • Noémie Bahin, communication officer • Mauna Reveil, project manager • Céline Cazes, director