Institute for Energy Transition
dedicated to Marine Renewable Energies
RSS News

Reducing the cost of seabed characterization

Progress meeting continued

Continuation of progress meetings

Bastien Taormina, PhD student at France Energies Marines  and Ifremer, in front of his experimentation set‐ up

Is lobster sensitive to the electromagnetic field of underwater power cables?

First expert work in the framework of COME3T project

Three submitted themes, restitution in few months

Online survey

Participating in user needs consultation


Impacts on micro-plankton of artificial upwelling inputs

Duration: 3 years

Project description

The IMPALA project focuses on Ocean Thermal Energy Conversion (OTEC) which consists of using the temperature difference between the surface and the depths of the ocean to operate a thermal machine. The production of OTEC is optimal when the temperature difference becomes greater than 20°C (typically 5°C at depth at -1000 m and 25°C at surface) which is the case in tropical areas.
The IMPALA project aims to study the potential impacts of deep water discharges in the subsurface of an ocean thermal power plant. Indeed, the subsurface supply of water of very different background, temperature and chemical composition, as well as the cooling of surface water at the exit of the exchanger, could locally induce a modification of the functioning of the planktonic ecosystem equivalent to the implementation of an artificial upwelling.


  • Specify the biogeochemical processes involved in an artificial upwelling related to the operation of an OTEC plant in an oligotrophic environment
  • Improve knowledge of tropical environments and their biogeochemical functioning in order to apply it to the study of the impacts of the discharge of future OTEC plants at sea


Coordination: France Energies Marines
Scientific and technical management: UBO

IMPALA project partners