Operational multi functions testing equipment

The SEM-REV is a fully fitted wave energy test facility intended to test and improve the efficiency of Wave Energy Converters (WECs) at an early stage of development. This test facility is aimed at helping the sector marine renewable energies grow in France and Europe.

The SEM-REV package

Operations are supervised from the land station in Le Croisic – west coast of France - by a dedicated team with all the required equipment to ensure operability, security and safety of data acquisition, energy converter control and survey. Environmental monitoring is operational since 2009, and the connection HUB was installed in the summer 2015 and thus the site is now 100% operational.

In brief, the SEM-REV package is:


• Provide a fully consented slot for installation operation and maintenance.

• Electricity resale management for grid connected testing.

• Storage or dissipation alternatives for off-grid projects.

• Offices and data access (met-ocean and device monitoring) for test campaign supervision.

• Maintenance of the equipment and tools in operational conditions.

• Link with local marine stakeholders (sea users, state services, operators, marine surveyor…).

• Environmental Impact Assessment for both the test site and the devices.

SEM-REV Charactéristics

• Water depth - 32m to 36m LAT
• Seabed - Sand (0.2-0.5mm)
• Export cable - 8MVA – 20kV
• 3 test slots - 24 optical fibers
• Wave - 3 Datawell buoys
• Current, tide - 2 ADCP systems
• Wind - 2 meteo-buoys
• Tidal range  - 6,2m
• Max tidal current (10years) - 0,7m/s
• Mean wave energy  - 12 kW/m
• Extreme Hs (10years) - 8,3m
• Extreme Hs (50years) - 9,6m
• Mean wind velocity - 7.5 m/s (1h,10m)
• Extreme Wind (50years) - 29m/s (1h,10m)

Equipment and tools

 • Land station: research centre and electrical substation.
• Export cable: 20kV and 24 fibre optics.
• 1km² restricted and marked area.
• Subsea termination units, for three simultaneous connections.
• Met-Ocean instrumentation (wind, wave and current).

Expertise & services

Using the well-known expertise of Centrale Nantes in the scope of marine renewable energy, the strategy consists in building up a continuous and step-wise approach to testing of technologies, and offers the corresponding facilities and services from the initial proof of concept to the large scale verification of prototypes at sea. The three pillars of Centrale Nantes expertise are hydrodynamic modelling, tank testing and open ocean deployment.

In addition, the SEM-REV is part of a larger regional industrial and research network, WeAMEC, deeply involved in marine renewables. Therefore, collaborating with Centrale Nantes will facilitate the access to:

• Hydrodynamic expertise and modelling of the entire chain (floater, moorings, umbilicals and control).

• Small scale experimental modelling in the ocean wave tank (50m x 30m x 5m) and the towing tank (148mx5mx3m).

• Refined environmental analysis (combined resource and interactions)

• Storage and access to local ports and infrastructure

• Support in transport and logistic activities (harbour storage, handling and working area booking)

• Outings and operations at sea (vessels bookings, qualified personnel, divers etc…)

• Soil analysis in laboratory (stemming from geotechnical and geophysical in-situ surveys)

SEM-REV naturally fits within Centrale Nantes activities & capacities to assist developers from concept stages to the test of prototype.
Published on April 13, 2017 Updated on May 4, 2017