(d)As used in this subchapter (except in) the terms “farm”, “farm dwelling”, and “farm housing” shall include dwellings or other essential buildings of eligible applicants. (e)The Secretary shall establish procedures under which borrowers under this subchapter are required to make periodic payments for the purpose of taxes, insurance, and other necessary expenses as the Secretary may deem appropriate. Notwithstanding any other provision of law, such payments shall not be considered public funds. The Secretary shall direct the disbursement of the funds at the appropriate time or times for the purposes for which the funds were escrowed. The Secretary shall pay the same rate of interest on escrowed funds as is required to be paid on escrowed funds held by other lenders in any State where State law requires payment of interest on escrowed funds, subject to appropriations to the extent that additional budget authority is necessary to carry out this sentence. If the prepayments made by the borrower are not sufficient to pay the amount due, advances may be made by the Secretary to pay the costs in full, which advances shall be charged to the account of the borrower, bear interest, and be payable in a timely fashion as determined by the Secretary. The Secretary shall notify a borrower in writing when loan payments are delinquent. (f)With respect to any limitation on the amount of any loan which may be made, insured, or guaranteed under this subchapter for the purchase of a dwelling unit, the Secretary may increase such amount by up to 20 percent if such increase is necessary to account for the increased cost of the dwelling unit due to the installation of a solar energy system (as defined in subparagraph (3) of the last paragraph of) therein. (g)The programs authorized by this subchapter shall be carried out, consistent with program goals and objectives, so that the involuntary displacement of families and businesses is avoided. (h)The Secretary may not restrict the availability of assistance under this subchapter for any alien for whom assistance may not be restricted under.