Money to pay part or all of the actual costs of mini-audits, maxi-audits, and energy conservation measures performed by or for schools and governing bodies shall be available from legislative appropriations made for that purpose in accordance with the priorities established in section 216C.35. Money appropriated pursuant to this section is available to school districts and local governmental units that submitted acceptable mini-audits or maxi-audits after April 9, 1976, and before July 1, 1979.