IMPROVED POWER GENERATING APPARATUS

Disclosed herein is a power generating apparatus for extracting energy from flowing water. The apparatus comprises a buoyancy vessel, and a turbine assembly coupled to the buoyancy vessel. The turbine assembly comprises a turbine rotor mounted to a nacelle, and a support structure. The support structure comprises an open structure defining at least one void configured to provide a passage for water to flow through. The support structure is pivotally coupled at its inboard end to the buoyancy vessel at at least two vertically spaced connection locations and at its outboard end to the nacelle. The turbine assembly is pivotally moveable between a first position and a second position. When the power generating apparatus is floating on a body of water, in the first position the nacelle is fully submerged below the water surface; and in the second position at least a part of the nacelle is projects above the water surface.