The commissioner may:
[Paragraph I effective until the date that the commissioner of the department of environmental services certifies to the secretary of state and the director of the office of legislative services that certain states have terminated or have authorized termination of their participation in the regional greenhouse gas initiative; see also paragraph I set out below.]
I. Develop a trading and banking program to provide appropriate compliance flexibility in meeting the emission caps established under RSA 125-O:3, III and allowance requirements of RSA 125-O:21 and RSA 125-O:22, and to encourage earlier and greater emissions reductions and the development of new emission control technologies in order to maximize the cost-effectiveness