As used in this section, "solar energy heating or cooling system"
means equipment which provides for the collection, transfer, storage
and use of incident solar energy for water heating, space heating
or cooling which absent such solar energy system would require a conventional
energy resource, such as petroleum products, natural gas or electricity,
employs mechanical means such as fans or pumps to transfer energy,
and meets standards established by regulation by the Secretary of
the Office of Policy and Management. Such standards are incorporated
herein by reference.