7.—(1) The renewables obligation is imposed on each electricity supplier supplying electricity in England and Wales (a “designated electricity supplier”).
(2) The renewables obligation is that, subject to articles 67 and 68, each designated electricity supplier must, by the specified day, produce to the Authority, in respect of each megawatt hour of electricity that it supplies to customers in England and Wales during an obligation period, the number of UK ROCs determined in accordance with article 13.
(3) To enable the number referred to in paragraph (2) to be determined, the Secretary of State must first determine, for the obligation period in question, calculations A and B and the total number of UK ROCs required to be produced by designated electricity suppliers in accordance with articles 8 to 12.
(4) Where the number of UK ROCs that a designated electricity supplier is required to produce by virtue of paragraph (2) is not a whole number, it is to be rounded to the nearest whole number (one-half being rounded upwards).