38.—(1) Subject to paragraph (3), this article applies to electricity which is generated—
(a)by a generating station—
(i)which was accredited as at 31st March 2009, and
(ii)which has not ceased to be accredited since that date,
(b)from landfill gas or sewage gas, and
(c)using pre-2013 capacity.
(2) Subject to paragraph (3), this article also applies to electricity which is generated—
(a)by a generating station—
(i)which was accredited on or before 31st March 2011,
(ii)which, since being accredited, has not ceased to be accredited at any time, and
(iii)in respect of which preliminary accreditation was held—
(aa)as at 31st March 2009, and
(bb)from that date until the date on which the station was accredited,
(b)from landfill gas or sewage gas, and
(c)using pre-2013 capacity.
(3) This article does not apply to electricity—
(a)which is generated by a generating station to which article 34 applies, or
(b)to which article 37 applies.
(4) Subject to paragraph (5), the amount of electricity to be stated in each ROC issued in respect of electricity to which this article applies is 1 megawatt hour.
(5) Where, at any time it generates electricity after 31st March 2011, the generating station's total installed capacity is greater than it was on 31st March 2011, paragraph (4) applies only in relation to ROCs which are to be issued in respect of—
(a)where electricity generated using the total installed capacity of the station as at 31st March 2011 (“the March 2011 capacity”) is measured separately from electricity generated using capacity which has been added to the station since that date, the electricity to which this article applies which is generated using the station's March 2011 capacity;
(b)in any other case, the appropriate percentage of the electricity to which this article applies (the appropriate percentage for these purposes being the total installed capacity of the station as at 31st March 2011 expressed as a percentage of the total installed capacity of the pre-2013 capacity of the station as at the date of generation of the electricity).
(6) In relation to the remainder of the electricity to which this article applies, the amount of electricity to be stated in each ROC is to be determined in accordance with article 33(3).
(7) This article is subject to article 41.