Okla. Stat. tit. 61, § 61-211: Selection of equipment on life cycle cost analysis basis

When any state agency or department must replace or supplement

major items of energy-consuming equipment in existing state-owned or

leased structures or any self-contained unit of any structure with

other major items of energy-consuming equipment, the selection of

such items shall be made on the basis of a life cycle cost analysis

of alternatives in accordance with rules and regulations promulgated

by the Director of the Office of Management and Enterprise Services.