N.H. Rev. Stat. § 362-A:4-a
Any qualifying small power production facility already subject to rates established by order of the commission may increase its capacity and energy or energy, provided it continues to be a small power production facility. Any capacity additions and the associated energy additions or the energy additions to such qualifying small power production facility shall be purchased in accordance with applicable law and may be purchased under a contract. Such capacity addition and associated energy additions or energy additions shall not be purchased under the rates established by existing orders of the commission. Such rates and orders shall otherwise remain applicable to the qualifying small power production facility.
RSA 362-A:4-a
1989, 211:2, eff. July 21, 1989.