2.—(1) An application for the grant of an environmental permit under regulation 13(1) for a relevant installation which generates electricity must contain a cost-benefit analysis which assesses the cost and benefits of providing for the operation of the installation as a high-efficiency cogeneration installation.
(2) The regulator must exercise its relevant functions to ensure that an application for a variation of an environmental permit under regulation 20(1) is made before the energy plant of a relevant installation which generates electricity is substantially refurbished.
(3) The regulator must ensure that an application for a variation of an environmental permit required by sub-paragraph (2) contains (in addition to the information required by paragraph 2(1)(b) of Schedule 5) a cost-benefit analysis which assesses the cost and benefits of converting the relevant installation to high-efficiency cogeneration.
(4) The requirement for a cost-benefit analysis in sub-paragraph (1) or (3) does not apply to peak load and back-up electricity generating relevant installations for which the application for the grant or a variation of an environmental permit states that operation under 1,500 operating hours per year as a rolling average over a period of 5 years is planned.
(5) In the case of a relevant installation to which sub-paragraph (4) applies, the regulator must ensure that, if an environmental permit is granted or varied, it includes conditions ensuring that the operating hours for the installation remain within that constraint.