OCEAN THERMAL ENERGY CONVERSION (OTEC)

Thanks to the technologies developed in the area of OTEC, DCNS will ensure that tropical marine regions that are not connected to continental power networks will be able to achieve energy independence.

Ocean thermal energy conversion (OTEC) is based on the principle of exploiting the temperature gradient in tropical seas between the surface seawater (around 25°C) and the waters at depth (around 5°C at about 1,000 metres). This temperature gradient allows the continuous production of electricity. In the medium term, OTEC will help to respond to the growing need for electricity in regions located in the tropics and ensure their future energy independence. This innovative solution is effectively a green alternative to so-called “fossil” fuels (gas, coal), which are still used extensively on isolated sites that are not connected to continental power networks. DCNS is now able to offer two complementary turnkey ocean thermal energy conversion solutions: one floating offshore solution that allows the production of 16 MW, and a land-based solution with a capacity of 7 MW. The Group is developing a floating OTEC power plant in Martinique, in the frame of the NEMO project (New Energy for Martinique and Overseas), which obtained a European grant in July 2014.