A rural electric cooperative which has filed a certificate of deregulation with the public utilities commission shall not, without prior authorization of the commission, after consent to jurisdiction pursuant to N.H. Rev. Stat. § 301:60, notice, and hearing, charge, through its stranded cost recovery charge, delivery services rates, or any other rate or surcharge, any member who does not purchase generation services provided by or acquired through such rural electric cooperative, for any costs of generation services incurred by such rural electric cooperative after retail competition is certified to exist pursuant to N.H. Rev. Stat. § 38:36, except for electric power consumed directly by the rural electric cooperative. Nothing in this paragraph shall prevent any member or members from entering contracts of any duration with such rural electric cooperative for the purchase of generation services and being bound by their terms, including damages for termination.