Subject to appropriation, the Department may establish and administer a program to make grants to municipalities whose buildings conform with nationally recognized and accepted green building guidelines, standards, or systems. Grants may be used for new construction, existing buildings, commercial interiors, core and shell development, homes, schools, or neighborhood development. The grant program shall be permissive and subject to appropriation by the General Assembly.
     Municipalities receiving grant moneys under this Section are encouraged to use local small businesses within the municipality whenever possible.