Floating storage of wind turbines

FlexiFloat Substructure overall dimensions:

• 420 x 240 x 54m (34m above sea level)

• Substructure weight: 5700 tons

• Water depths: 30 – 800m

• Mooring: 6 lines

Prototyp turbine installation 9 off turbines: 3 twin-rotor and 3 singel-rotor

• 33,3 MW installed capacity
• Twin-rotor height/diameter: 94m/105m
• Singel-rotor height/diameter: 124m/117m
• Turbin overall weight incl support towers: 3500 tons
• Windpark overall weight: 9200 tons

Feature:

• Complete installation close to fabrication yard inshore.
• Low cost on production, towing, installation, operation and maintenance (Low LCoE)
• Excellent stability in High Waves and Heavy Wind.
• Extended height above sea and stability improve turbine efficiency and lifetime
• Area-efficient installation
• Option to install helideck and transformation module on substructure.
• Feasibility for extension of windfarm.

• Years of development		2016 -2020
  Years of production and commissioning		2020 -2023
  Years of operation		25
  Number of turbines		9
  Installed capacity		33,3 MW
  Water depth (UtsiraNord)		250m
  Distance from port and grid connection (UtsiraNord)		40km
  Average wind speed (UtsiraNord)		10,2m/s
  Soil condition(UtsiraNord)		Homogenus medium clay
  Production 25year x 8760hrs/year x 33,3MW x *0.49		3,55 millions MWh
  CAPEX (inshore) **68 millions EUR/ 3,55 millions MWh		19 EUR/MWh
  CAPEX (offshore)***7 millions EUR/ 3,55 millions MWh		2 EUR/MWh
  OPEX (O&M) ****60 millions EUR/ 3,55 millions MWh		17 EUR/MWh
  Contingency 20%		8 EUR/MW
  LCoE(LevelisedCost of Energy, incl 20% contingency)		46 EUR/MWh

*49% load factor (4290 annual hours of maximum load) **complete inshore installation ready for sail away. ***towing offshore, mooring, grid and commissioning. ****operation and maintainance in 25years lifetime.