; or (ii) multi-family affordable housing solar installations. (C) Grants After allocating amounts to carry out subparagraph (B), the Secretary shall use the remaining funds made available under subparagraph (A) for a fiscal year to provide grants to eligible entities— (i) to pay the upfront costs of photovoltaic solar electricity generating facilities installed on properties of grant-eligible households; or (ii) for any other eligible use described in subsection (e). (D) Increase in grant amount Notwithstanding subparagraph (A), if the Secretary determines that more than 50 percent of the amounts described in that subparagraph are necessary during any of fiscal years 2018 through 2032 to provide grants to encourage innovative financing and installation models to reach underserved markets, the Secretary may use more than 50 percent of those amounts to provide those grants. (3) Goals and accountability (A) In general In providing loans and grants under this subsection, the Secretary shall take such actions as may be necessary to ensure that— (i) the assistance provided under this subsection is used to facilitate and encourage innovative solar installation and financing models, under which the recipients develop and install photovoltaic solar electricity generating facilities that provide significant savings to low-income households while providing job training or community engagement opportunities with respect to each solar system installed; (ii) loan and grant recipients shall— (I) have installed not less than 600 kilowatts of photovoltaic solar energy during the 2-year period preceding the date on which the loan or grant is provided to ensure consumer protection; or (II) until the goal described in subclause (I) is achieved, enter into partnership with an entity that— (aa) has not less than 2 years of experience deploying solar photovoltaic systems for low-income households in a manner that maximizes the savings benefits of solar access