(a) The provisions of this Part shall apply to purchases by or for the State or any agency thereof of a new or replacement energy using product and to building designs or specifications for new construction and for substantial renovation of any existing building owned or leased in whole by a State agency.

(b) The purpose of this Part is to establish minimum energy efficiency standards for energy using products purchased by or for a State agency. The standards are designed to achieve cost effective savings to the maximum extent practicable, taking into account market availability.