Blade
(1) Blade(i) Definition. Blade means an airfoil-shaped blade that is responsible for converting wind energy to low-speed rotational energy. (ii) Credit amount. For a blade, the credit amount is equal to the product of 2 cents multiplied by the total rated capacity of the completed wind turbine for which the blade is designed. (2) Offshore wind foundation(i) Definition. Offshore wind foundation means the component (including transition piece) that secures an offshore wind tower and any above-water turbine components to the seafloor using (A) Fixed platforms, such as offshore wind monopiles, jackets, or gravity-based foundations; or (B) Floating platforms and associated mooring systems. (ii) Credit amount. For a fixed offshore wind foundation platform, the credit amount is equal to the product of 2 cents multiplied by the total rated capacity of the completed wind turbine for which the fixed offshore wind foundation platform is designed. For a floating offshore wind foundation platform, the credit amount is equal to the product of 4 cents multiplied by the total rated capacity of the completed wind turbine for which the floating offshore wind foundation platform is designed. (3) Nacelle(i) Definition. 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. (ii) Credit amount. For a nacelle, the credit amount is equal to the product of 5 cents multiplied by the total rated capacity of the completed wind turbine for which the nacelle is designed. (4) Related offshore wind vessel(i) Definition. Related offshore wind vessel means any vessel that is purpose-built or retrofitted for purposes of the development, transport, installation, operation, or maintenance of offshore wind energy components. A vessel is purpose-built for development, transport, installation, operation, or maintenance of offshore wind energy components if it is built to be capable of performing such functions and it is of a type that is commonly used in the offshore wind industry. A vessel is retrofitted for development, transport, installation, operation, or maintenance of offshore wind energy components if such vessel was incapable of performing such functions prior to being retrofitted, the retrofit causes the vessel to be capable of performing such functions, and the retrofitted vessel is of a type that is commonly used in the offshore wind industry. (ii) Credit amount. For a related offshore wind vessel, the credit amount is equal to 10 percent of the sales price of the vessel. The sales price of the vessel, determined under Federal income tax principles, does not include the price of maintenance, services, or other similar items that may be sold with the vessel. For a related offshore wind vessel with respect to which an election under section 45X(a)(3)(B)(i) has been made, such election will not cause the sale price of such vessel to be treated as having been determined with respect to a transaction between uncontrolled taxpayers for purposes of section 482 of the Code and the regulations in this chapter. (5) Tower(i) Definition. Tower means a tubular or lattice structure that supports the nacelle and rotor of a wind turbine. (ii) Credit amount. For a tower, the credit amount is equal to the product of 3 cents multiplied by the total rated capacity of the completed wind turbine for which the tower is designed. (6) Total rated capacity of the completed wind turbine. For purposes of this section, total rated capacity of the completed wind turbine means, for the completed wind turbine for which a blade, nacelle, offshore wind foundation, or tower was manufactured and sold, the nameplate capacity at the time of sale as certified to the relevant national or international standards, such as IEC 61400, or ANSI/ACP 101-1-2021, the Small Wind Turbine Standard (Standard). Certification of the turbine to such Standards must be documented by a certificate issued by an accredited certification body. The total rated capacity of a wind turbine must be expressed in watts. (7) Substantiation. Taxpayers must maintain specific documentation regarding wind energy components for which a section 45X credit is claimed. For blades, nacelles, offshore wind foundations, or towers, a taxpayer must document the turbine model for which such component is designed and the total rated capacity of the completed wind turbine in technical documentation associated with the sale of such component. For related offshore wind vessel, such documentation could include the contract to construct or retrofit (along with retrofit plans), sales contract, U.S. Coast Guard bill of sale, U.S. Coast Guard Certificate of Documentation (COD), and U.S. Coast Guard Certificate of Inspection (COI).