POTENTIAL OF FLOATING WIND

Globally, there is an increased desire for renewable energy contribution in the overall energy production, such as wind harvesting.

Offshore is now a main source of renewable energy .

  • Exponential growth
  • Main sources in the USA, Europe, and Asia
  • Government incentives for conversion

Floating wind will fully trigger this potential, with important development opportunities

  • Great potential: 80% of offshore wind accessible only with floating structures (CarbonTrust, 2015), representing the equivalent of 4,000GW or 4,000 nuclear plants
  • Strong perspectives: 12 GW could be installed by 2030 (Equinor, 2019), representing 24 projects of 50 floaters each
  • Busy pre-commercial pipe: 9 projects are to come in line by 2022 (Wind Europe, 2017; NREL, 2017)

DIFFERENCE BETWEEN FIXED AND FLOATING STRUCTURES

There are two different ways to install a wind turbine at sea:

  • On a fixed foundation grounded in the seabed. This solution can be accomplished with seafloors up to 50 - 70 meters. Beyong this limit the immersed structure becomes oversized
  • Alternatively, on a floating structure connected to the seabed with anchoring lines in order to keep the assembly in position. It can be installed anywhere from 30 m of depth onward

DIFFERENCE BETWEEN FIXED AND FLOATING STRUCTURES

There are two different ways to install a wind turbine at sea:

  • On a fixed foundation grounded in the seabed. This solution can be accomplished with seafloors up to 50 - 70 meters. Beyong this limit the immersed structure becomes oversized
  • Alternatively, on a floating structure connected to the seabed with anchoring lines in order to keep the assembly in position. It can be installed anywhere from 30 m of depth onward

NECESSITY OF GOING AFLOAT

Limited Impacts

  • Little noise and visual pollution
  • Very limited sea bed impacts, even in complex soils

Increased competitiveness over time compared to standard and offshore wind

There is a high potential of cost reduction over time. Indeeed the Levelized Cost of Energy (LCoE) can benefit from

  • Access to deeper water depths; better wind quantity and quality (>8 m/s)
  • More predictable source of energy for a better integration in the grid
  • Reduced installation costs : no need of expensive installation vessels
  • Wind turbine power generation can be increased with technological improvements