(36) To provide in all programs of the authority means to finance project costs for the purchase, construction and installation in new and existing buildings of energy conservation measures and renewable energy systems providing space heating or cooling, domestic hot water, electricity or other useful energy, regardless of whether a building is presently financed in whole or in part by other programs of the authority. Such energy financing programs shall include making or insuring first or second mortgage loans or loans secured by a security other than a mortgage, as the authority may prescribe. The authority's energy loan programs shall be designed to carry out the state policy of encouraging energy conservation and the widespread use of renewable energy to reduce dependence on conventional fuels subject to rapid increases in cost and uncertain availability. The authority may prescribe loan conditions and loan eligibility criteria consistent with state policy. For the purposes of this subsection “renewable energy” means solar, wind, water and biomass energy;
(37) To make loans to any person who is sixty-two years of age or older and who owns a single family dwelling in which he resides, for the purpose of converting a portion of the dwelling into a rental unit, subject to applicable zoning regulations;
(38) To extend mortgage loan guarantees to mortgage lending institutions to refinance residential mortgage loans when a decrease in the appraised value of the real property securing the mortgage precludes such lending;