Section 6-74-6 - Criteria for qualifying cogeneration facilities(a) For any topping-cycle cogeneration facility, the useful thermal energy output of the facility during any calendar year period, shall be not less than five per cent of the total energy output.(b) For any topping-cycle cogeneration facility for which any of the energy input is natural gas or oil, and the installation of which began on or after March 13, 1980, the useful power output of the facility plus one-half the useful thermal energy output, during any calendar year period, shall: (1) Subject to paragraph (2), be not less than 42.5 per cent of the total energy input of natural gas and oil to the facility; or(2) If the useful thermal energy output is less than fifteen per cent of the total energy output of the facility, be not less than forty-five per cent of the total energy input of natural gas and oil to the facility.(c) For any topping-cycle cogeneration facility not subject to subsection (b), there is no efficiency standard.(d) For any bottoming-cycle cogeneration facility for which any of the energy input as supplementary firing is natural gas or oil, and the installation of which began on or after March 13, 1980, the useful power output of the facility during any calendar year period, shall be not less than forty-five per cent of the energy input of natural gas and oil for supplementary firing. For all other bottoming-cycle cogeneration facilities, there is no efficiency standard.(e) The commission may waive any of the requirements of this section upon a showing that the facility will produce significant energy savings.[Eff 2/18/82; am and comp 5/2/85; am and comp] (Auth: HRS § 269-6) (Imp: HRS § 269-27.2)