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		2018 -2020
  Year of commissioning		2023
  Years of operation		25
  Number of turbines		12
  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.