11.—(1) Before the start of each obligation period, the Secretary of State is to estimate, in megawatt hours, the total amount of renewable electricity likely to be supplied to customers in the United Kingdom during that period by designated electricity suppliers and electricity suppliers on whom an obligation has been imposed under an order made under sections 32 to 32M of the Act by Scottish Ministers or Articles 52 to 55F of the Energy (Northern Ireland) Order 2003.
(2) Having regard to this estimate, the Secretary of State is to calculate how many UK ROCs are likely to be issued in respect of that renewable electricity during that obligation period.
(3) The figure representing the number of UK ROCs likely to be so issued, increased by 10%, is calculation B for that obligation period.
(4) Where calculation B is not a whole number, it is to be rounded to the nearest whole number (one-half being rounded upwards).
(5) References to calculation B in articles 12 and 13 are to be construed accordingly.
(6) In this article “renewable electricity” means electricity which is generated from renewable sources and in respect of which UK ROCs may be issued.