; certification for green buildings (A) Revised Federal building energy efficiency performance standards (i) In general Not later than 1 year after the date of enactment of the All-of-the-Above Federal Building Energy Conservation Act of 2019 , the Secretary shall establish, by regulation, revised Federal building energy efficiency performance standards that require that— (I) unless demonstrated not to be life-cycle cost-effective for new Federal buildings and Federal buildings with major renovations— (aa) the buildings shall be designed to achieve energy consumption levels that are not less than 30 percent below the levels established in the most recently published version of the ASHRAE Standard or the International Energy Conservation Code, as appropriate, on the date of enactment of the All-of-the-Above Federal Building Energy Conservation Act of 2019 , unless the Secretary determines, pursuant to subparagraph (B), that a subsequent version of such a standard or code shall apply; and (bb) sustainable design principles are applied to the location, siting, design, and construction of all new Federal buildings and replacement Federal buildings; (II) if water is used to achieve energy efficiency, water conservation technologies shall be applied to the extent that the technologies are life-cycle cost-effective