; or (B) with approval from the Administrator, provide some, or all, of such grant to another eligible entity for use in accordance with subparagraph (A). (2) Administrative costs Not more than 50 percent of each grant provided under this section may be used to pay for the administrative cost of providing incentives in accordance with paragraph (1). (3) Incentive amounts With respect to rebates, vouchers, and other such financial incentives, an eligible entity shall determine the amount to provide based on the following: (A) The amount of the grant provided to the eligible entity under this section. (B) The amount of any other incentives that are available to a covered consumer for the purchase of a WaterSense product. (C) The estimated amount necessary to encourage a covered consumer to purchase a WaterSense product. (D) As applicable, the costs to a covered consumer for onsite preparation, assembly, and installation of a WaterSense product. (e) Authorization of appropriations There are authorized to be appropriated to carry out this section— (1) $50,000,000 for fiscal year 2021; (2) $100,000,000 for fiscal year 2022; (3) $150,000,000 for fiscal year 2023; (4) $100,000,000 for fiscal year 2024