Federal Purchasing Requirement under 42 U.S.C. § 8259b(e)(2)-(4) says that agencies are to buy products with low standby power of not more than 1 watt if the lower-wattage product is life cycle cost effective and if the performance of the product is not compromised.
(2) Federal purchasing requirement Subject to paragraph (3), if an agency purchases an eligible product, the agency shall purchase—
(A) an eligible product that uses not more than 1 watt in the standby power consuming mode of the eligible product; or
(B) if an eligible product described in subparagraph (A) is not available, the eligible product with the lowest available standby power wattage in the standby power consuming mode of the eligible product.
(3) Limitation The requirements of paragraph (2) shall apply to a purchase by an agency only if—
(A) the lower-wattage eligible product is— (i) life cycle cost-effective; and (ii) practicable; and
(B) the utility and performance of the eligible product is not compromised by the lower wattage requirement.
(4) Eligible products The Secretary, in consultation with the Secretary of Defense, the Administrator of the Environmental Protection Agency, and the Administrator of General Services, shall compile a publicly accessible list of cost-effective eligible products that shall be subject to the purchasing requirements of paragraph (2).