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Sea-GRID Call for Expression of Interest - Five innovative projects selected to advance offshore energy production on the SEM-REV site

The partners of the Sea-GRID Call for Expression of Interest unveiled today the five winning projects! Enthusiastic responses were received across the board to this call, which aims to develop concrete and innovative solutions for the smart management of electricity produced offshore on the Centrale Nantes test site, SEM-REV. The selected projects focus on new energy storage solutions, multi-use offshore platforms, onshore uses and the development of an underwater hub...

on September 22, 2020

Sea-GRID was launched by Centrale Nantes, RTE and Enedis, with support from Solutions&Co, last February. It relies on the facilities and skills of the three organisers: Centrale Nantes, via its SEM-REV offshore test site, which already supplies electricity to the grid, and RTE and Enedis, who are responsible respectively for the transmission and distribution of electricity across the grid.

These individual or collaborative projects, led by companies based in Pays de la Loire (for at least one of each project’s partners), represent tremendous catalysts for companies in the region, and an opportunity to develop new markets.

The Sea-GRID projects selected will benefit from the technological expertise of Centrale Nantes, ENEDIS and RTE to confirm the feasibility of their project. In the longer term the aim is to deploy a demonstrator at the SEM-REV site. They will also have development and funding support from Sea-GRID partners: Pôle Mer Bretagne Atlantique, Pôle S2E2, SMILE, WEAMEC and Solutions&co, the Pays de la Loire Development Agency.

The projects selected in the Sea-GRID call:

  • T2P, led by Geps Techno, involves extending their WAVEGEM hybrid platform, already installed on the SEM-REV site, into a multi-technology test platform, with a strong electrical and energy management focus (hosting sensors, electrical machines and offshore storage solutions).
  • SEAMAC, led by SEGULA Technologies, aims to demonstrate, in real conditions, the REMORA solution - a high-volume compressed air offshore energy storage system. Patented by SEGULA, this environmentally-friendly solution offers high yield potential (recovering up to 70% of stored electricity). The SEAMAC project should lead to the installation of the demonstrator on the SEM-REV offshore site in 2023.
  • SEA-LHYFE, led by Lhyfe, comprises players from the Pays de la Loire specialising in MRE and offshore structures. Together, they will develop and operate offshore platforms for the production of green hydrogen, using renewable resources only. The project aims to validate their concept of offshore green hydrogen production on the SEM-REV site, before moving to full-scale rollout in 2024.
  • Octopus, led by SuperGrid Institute, aims to develop and demonstrate an innovative technology to reduce the cost of electricity produced by marine renewable energies. Naval Energies (France), Nexans (Belgium), and SuperGrid Institute (France) will join forces in this project to demonstrate an underwater active hub solution, designed for future floating wind farms.
  • Croisic-GRID, led by EDF, is based on a strong local presence. Its objective is to install a battery demonstrator powered, in particular, by offshore technologies (FLOATGEN wind turbine and WAVEGEM platform) near the SEM-REV onshore research centre in Le Croisic, a space that could also become an information centre for MREs.


The five teams will present their projects on 5 October 2020 – 2 to 4 pm – during a webinar organised as part of the “Printemps de l’innovation”.

> Register here for the webinar



Published on September 22, 2020 Updated on September 30, 2021