4 Reckonable energy
1 Reckonable energy is energy which is to be taken into account in accordance with the rules set out in the following provisions of these regulations.
2 Energy supplied to the relevant premises is reckonable only if, and to the extent that, it is produced from relevant commodities which are, or are deemed to be, burned within the relevant premises.
3 Relevant commodities which are not burned within the relevant premises shall be deemed to be so burned if they are used there.
4 For the purpose of paragraph (2) “energy” includes cooling supplies and supplies of steam (see regulations 6(7) and (8) and 7).
5 In these Regulations “the relevant premises” means—
(a) in the case of a determination under regulation 3(2), the installation referred to in regulation 3(2)(a)(i); and
(b) in the case of a determination under regulation 3(3)—
(i) the installations or parts of installations referred to in regulation 3(3)(a)(i); and
(ii) elsewhere on the site referred to in the regulation 3(3)(a)(ii).
6 Subject to regulations 5 and 6, the quantity of energy produced from electricity is to be multiplied by a factor of 2.6 to convert it into reckonable energy.
7 The reckonable energy from any other relevant commodity shall be calculated by reference to the gross calorific value of the commodity burned to produce it.