(1) Except where paragraph (2) applies, the amount that is afforded is the amount of relevant duty that has been charged and paid on qualifying oil used to produce electricity in the annual operation to which the application relates. Where the efficiency percentage of the station is less than the threshold efficiency percentage of that station, the amount that is afforded is the relevant fraction of the relevant duty that has been charged and paid.
(2) For the purposes of paragraph (1) the relevant fraction is the fraction—
(a) whose numerator is the efficiency percentage for the station; and
(b) whose denominator is the threshold efficiency percentage for that period.
(3) For the purposes of this regulation—
(a) A station’s threshold efficiency percentage shall be 20 per cent.
(b) A station’s efficiency percentage is its power efficiency, as stated in its CHPQA certificate.
(c) CHPQA has the meaning given in regulation 2 of the Climate Change Levy (Combined Heat and Power Stations) Regulations 2005 .
(d) CHPQA certificate means a certificate issued in respect of a combined heat and power station following assessment of the station against criteria set out in the CHPQA.