Division 6.1 All the measured electrical energy output and all the measured useful heat output can be taken into account when applying the methodology for determining the efficiency of the cogeneration process if the overall efficiency of the cogeneration unit is equal or higher than

1. (a)

   80 % for ‘Combined cycle gas turbines with heat recovery’ and ‘Steam condensing extraction turbines-based plants’, and

2. (b)

   75 % for the other types of cogeneration units,

as indicated in F1Schedule 4 to the Guarantees of Origin of Electricity Produced from High-efficiency Cogeneration Regulations 2007 or the Guarantees of Origin of Electricity Produced from High-efficiency Cogeneration Regulations (Northern Ireland) 2008 (as applicable),