Okla. Admin. Code § 25:40-1-2
In addition to terms defined in the Oklahoma Wind Energy Development Act, 17 O.S. § 160.11 et seq., the following word(s) or term(s), when used in this Subchapter, shall have the following meaning, unless the context clearly indicates otherwise:
"Clearinghouse" means the Military Aviation and Installation Assurance Siting Clearinghouse.
"Department" means the Oklahoma Department of Aerospace and Aeronautics.
"Determination of No Hazard" means a document issued by the Federal Aviation Administration.
"Director" means the Director of the Oklahoma Department of Aerospace and Aeronautics.
"FAA" means the Federal Aviation Administration.
"Owner" means the entity having a majority equity interest in commercial wind energy equipment, including their respective successors and assigns.
"Project boundary" means a graphic depiction of a wind energy facility's outer boundary, which should adequately demonstrate the project's outer perimeter, inclusive of all wind turbines.
"Wind energy facility" means an electrical generation facility consisting of one or more wind turbines under common ownership or operating control, and includes substations, meteorological data towers, aboveground and underground electrical transmission lines, transformers, control systems, and other buildings or facilities used to support the operation of the facility, and whose primary purpose is to supply electricity to an off-site customer or customers. Wind energy facility shall not include a wind energy facility located entirely on property held in fee simple absolute estate by the owner of the wind energy facility.
"Wind turbine" means a wind energy conversion system which converts wind energy into electricity through the use of a wind turbine generator and includes the turbine, blade, tower, base, and pad transformer, if any.
Okla. Admin. Code § 25:40-1-2