A TECHNOLOGICAL, ECOLOGICAL
AND INDUSTRIAL INNOVATION

The advantages of developing marine renewable energies are two-fold: contributing to the energy transition movement and developing a new industrial sector in France

Benefits of offshore wind turbines

INCREASED ENERGY
PRODUCTION

  • Strong, constant winds on the high seas.
  • More powerful wind turbines and the potential for larger farms in the long term.
  • Extended life-span thanks to machine repairs and renovations carried out on land.

LIMITED VISUAL IMPACT AND CONFLICTS OF USE

  • Far from the coast as less depth-related constraints.
  • Far from coastal fishing areas and leisure zones.
  • Far from zones used for radars and semaphore.

REDUCED COSTS
AND IMPACT

  • Foundations and turbines built and assembled on land.
  • No construction required at sea or under water.

DEVELOPMENT OF A NEW JOB-CREATING SECTOR

  • New jobs in the offshore wind turbine industrial sector.
  • New professions as a result of anchor and float construction needs.

Offshore turbines anchored to the seabed are currently the most technologically-advanced and well-developed marine renewable energies solutions available. In France, several projects are under-way with a total potential of 6,000MW, 500 MW of which are to be produced in the Saint-Brieuc Bay, Brittany. This technology only requires shallow waters (less than 50 metres deep) and is often seen in France in close proximity to the coastline.

Floating wind turbines have the advantage of not being subject to bathymetric restrictions, and therefore offer new prospects in the field…

Floating :
exceptional potential

The International Energy Agency estimates renewable marine energy potential at 20,000 to 90,000 terawatts/hour, meaning it could potentially single-handedly cover the entire planet’s needs (approximately 16,000 terawatts/hour). Boasting around 5,000km of shoreline, with a third located in Brittany alone, mainland France enjoys Europe’s second greatest renewable marine energy potential. By 2050, offshore wind turbines could generate twice as much electricity as nuclear plants, provided we can develop the right technology adapted to each specific marine environment.

Technological and environmental factors

One major challenge is ensuring this emerging technology is both profitable and reliable, testing it in real conditions before developing an entire industrial sector on a national and international scale. Having won the ADEME’s EOLFLO call for projects, the Groix & Belle-Île project is an exemplary demonstration of the potential inherent to this new technology. When this technology has reached a more mature stage, floating turbines may be used to supply people around the world with renewable energy. Thanks to the Groix Belle-Ile floating wind farm, Breton locals may be the very first to enjoy this new type of energy.

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