20.—(1) Subject to paragraphs (2) and (3), once during each obligation period the person to whom a ROC is to be issued must confirm to the Authority in writing, whether before or after the generation of the electricity to which the ROC relates, that that electricity, to the best of the person's knowledge and belief, has been or (as the case may be) will be—
(a)in the case of a ROC certifying the matters within section 32B(3) or (5) of the Act, supplied by an electricity supplier to customers in Great Britain;
(b)in the case of a ROC certifying the matters within section 32B(4) or (6) of the Act, supplied by a Northern Ireland supplier to customers in Northern Ireland;
(c)in the case of a ROC certifying the matters within section 32B(7) or (8) of the Act, used in a permitted way.
(2) Where a ROC certifying the matters within section 32B(3) or (5) of the Act is to be issued and paragraph (1)(a) cannot be complied with because the electricity in respect of which the ROC is to be issued cannot be shown to have been supplied to customers in Great Britain, the person to whom the ROC is to be issued must confirm to the Authority in writing—
(a)that the electricity in question is to be regarded as having been supplied to customers in Great Britain by virtue of article 16(2) or (3); and
(b)where it is located otherwise than on land, that the generating station to which the ROC relates is connected directly to a transmission or distribution system (or the part of such a system) that is located in Northern Ireland (and to no other system or part thereof).
(3) Where a ROC certifying the matters within section 32B(4) or (6) of the Act is to be issued and paragraph (1)(b) cannot be complied with because the electricity in respect of which the ROC is to be issued cannot be shown to have been supplied to customers in Northern Ireland, the person to whom the ROC is to be issued must confirm to the Authority in writing that the electricity in question is to be regarded as having been supplied to customers in Northern Ireland by virtue of article 16(5).
(4) In this article “Northern Ireland” has the same meaning as in Article 54(1) of the Energy (Northern Ireland) Order 2003.