wind energy component
(4) Wind energy component (A) In general The term “wind energy component” means any of the following: (i) Blades. (ii) Nacelles. (iii) Towers. (iv) Offshore wind foundations. (v) Related offshore wind vessels. (B) Associated definitions (i) Blade The term “blade” means an airfoil-shaped blade which is responsible for converting wind energy to low-speed rotational energy. (ii) Offshore wind foundation The term “offshore wind foundation” means the component (including transition piece) which secures an offshore wind tower and any above-water turbine components to the seafloor using— (I) fixed platforms, such as offshore wind monopiles, jackets, or gravity-based foundations, or (II) floating platforms and associated mooring systems. (iii) Nacelle The term “nacelle” means the assembly of the drivetrain and other tower-top components of a wind turbine (with the exception of the blades and the hub) within their cover housing. (iv) Related offshore wind vessel The term “related offshore wind vessel” means any vessel which is purpose-built or retrofitted for purposes of the development, transport, installation, operation, or maintenance of offshore wind energy components. (v) Tower The term “tower” means a tubular or lattice structure which supports the nacelle and rotor of a wind turbine.