Except as provided in paragraph (2), amounts made available for purposes of this section (together with any amounts available for such purposes from other Federal sources) may not be used to pay more than 50 percent of the costs of any energy conservation project. The non-Federal share of the costs of any such energy conservation project may be provided by using programs of innovative financing for energy conservation projects (including, but not limited to, loan programs and performance contracting), even if, pursuant to such financing, clear title to the equipment does not pass to the school or hospital until after the grant is completed.