42 U.S.C. § 8254 — Establishment and use of life cycle cost methods and procedures

establish practical and effective present value methods for estimating and comparing life cycle costs for Federal buildings, using the sum of all capital and operating expenses associated with the energy system of the building involved over the expected life of such system or during a period of 40 years, whichever is shorter, and using average fuel costs and a discount rate determined by the Secretary; and

develop and prescribe the procedures to be followed in applying and implementing the methods so established.

The design of new Federal buildings, and the application of energy conservation measures^* to existing Federal buildings, shall be made using life cycle cost methods and procedures established under subsection (a).

In leasing buildings for its own use or that of another agency^*, each agency shall, after January 1, 1994, fully consider the efficiency of all potential building space at the time of renewing or entering into a new lease.