; and (ii) at least 40 percent, the maximum amount of a modeled performance rebate shall be $4,000. (e) Measured performance rebates (1) In general In carrying out a State program under this section, a State may provide a homeowner, contractor, or rebate aggregator a rebate, to be known as a measured performance rebate, for a home energy efficiency retrofit that reduces home energy use by at least 20 percent as measured using methods and procedures approved by the Secretary. (2) Amount (A) In general Except as provided in section 204, and subject to subparagraph (B), the amount of a measured performance rebate provided under a State program shall be equal to 50 percent of the cost, including the cost of diagnostic procedures, labor, reporting, and energy measurement, of the applicable home energy efficiency retrofit. (B) Limitation Except as provided in section 204, with respect to a home energy efficiency retrofit that is measured as reducing home energy use by— (i) at least 20 percent, but less than 40 percent, the maximum amount of a measured performance rebate shall be $2,000; and (ii) at least 40 percent, the maximum amount of a measured performance rebate shall be $4,000. (f) Coordination of rebate and existing State-Sponsored or utility-Sponsored programs A State that receives a grant under this section is encouraged to work with State agencies, energy utilities, nonprofits, and other entities— (1) to assist in marketing the availability of the rebates under the applicable State program; (2) to coordinate with utility or State managed financing programs; (3) to assist in implementation of the applicable State program, including installation of home energy efficiency retrofits