21.—(1) Where two or more generating stations constitute a group for the purposes of this article, the Authority shall be entitled to issue a SROC in respect of electricity generated by those generating stations if, and only if–
(a)the amount of electricity generated by each of them (calculated in accordance with article 22(2)(a) and (b)) is added together and rounded (in accordance with article 22(2)(c);
(b)that rounded amount is stated in the SROC; and
(c)the SROC certifies the matters within section 32B(2ZA), (2AA) or (2AC) of the Act.
(2) Where an agent appointed under article 17 acts for two or more generating stations which constitute a group for the purposes of this article, the agent shall provide the Authority with–
(a)a figure representing the amount of electricity which the agent believes should be stated in any SROC to be issued in respect of that group; and
(b)the data which led the agent to arrive at that figure.
(3) Two or more generating stations constitute a group for the purposes of this article where–
(a)they have been accredited as generating stations capable of generating electricity from the same eligible renewable source;
(b)in respect of each of them the same person has been appointed to act as agent under article 17; and
(c)in respect of electricity generated by them, entitlement to SROCs is determined in the same way (either on a monthly basis or on an annual basis, depending on whether a notice has been given to the Authority under article 25(2) or not).