((a)) ** .—** This chapter does not require or authorize a federal agency to construct a new electric generating facility or related facility, to modify an existing facility, or to employ reserve or standby equipment to accommodate the needs of a non-federal person for electric energy.

((b)) ** .—** Revenue received by a federal agency pursuant to from the sale of electric energy generated from a facility of that agency is available to the agency without fiscal year limitation to purchase fuel and for operation, maintenance, and other costs associated with that facility.

((c)) ** .—** The authority under this chapter shall be exercised for those periods and pursuant to terms and conditions that the head of the federal agency concerned decides are necessary consistent with—

((1)) this chapter; and

((2)) responsibilities of the head of the federal agency under other law.

((d)) ** .—** A contract or other agreement executed under this chapter shall be negotiated and executed by the head of the federal agency selling or purchasing electric energy under this chapter.