Abstract: The present invention relates to a floating wind energy harvesting apparatus for offshore installation, the wind energy harvesting apparatus comprising: an elongated wind turbine body extending along a longitudinal wind turbine body axis, the wind turbine body comprising a lower body portion to be below a water surface when the wind energy harvesting apparatus is in operation and an upper body portion to be above the water surface when the wind energy harvesting apparatus is in operation; wind turbine blades attached to the upper body portion for converting wind energy to rotation of the wind turbine body around the longitudinal wind turbine body axis; an energy converter attached to the wind turbine body for converting the rotation of the wind turbine body in relation to a non-rotatable part to electrical energy; and anchorage means connecting the non-rotatable part to at least one anchor point via at least one float body.

Abstract: The present invention relates to a floating wind energy harvesting apparatus for offshore installation, comprising an elongated wind turbine body extending along a longitudinal wind turbine body axis, said wind turbine body comprising a lower body portion and an upper body portion; wind turbine blades attached to the upper body portion; at least a first cavity inside said wind turbine body and arranged within a first radial distance from said longitudinal wind turbine body axis; at least a second cavity arranged within a second radial distance, greater than said first radial distance, from said longitudinal wind turbine body axis; at least a first pump for pumping water from said first cavity to said second cavity; and an energy converter attached to said wind turbine body for converting the rotation of said wind turbine body to electrical energy.

Abstract: Disclosed is a dynamic turbine, capable of altering the sweep area in a large interval by moving a first fixing structure, a second fixing structure and blades to and from an essential same plane along an axis of rotation of the turbine.