(a) The chief procurement officer, in consultation with the central procurement office staff, shall adopt rules and regulations approved by the procurement commission relative to energy efficiency standards for major energy-consuming products to be procured by the state.

(b) When federal energy efficiency standards exist, the procurement commission, in consultation with the department of general services, shall, where feasible, adopt standards at least as stringent as the federal standards.

(c) For the purpose of implementing this part only, the central procurement office shall advise and consult with the chief procurement officer as an ex officio member.

(d) All future office equipment, appliances, lighting and heating and cooling products and systems purchased by and for state agencies shall be Energy Star qualified; provided, that such Energy Star qualified products and systems are commercially available.

(e) Existing purchasing contracts for all state agencies that do not provide as options Energy Star qualified office equipment, appliances, lighting and heating and cooling products and systems shall not be renewed upon expiration. All future contracts for state agencies shall provide as options Energy Star qualified office equipment, appliances, lighting and heating and cooling products and systems.

(f) The central procurement office, in consultation with the department of finance and administration, shall establish and publish guidelines providing direction to all state agencies regarding implementation of this section.