The circumstances set out in this section are where the electricity is—
generated using the original capacity of an onshore wind generating station—
which was accredited during the period beginning with 1 April 2017 and ending with 31 January 2018, and
in respect of which both the approved development condition and the investment freezing condition are met, or
generated using additional capacity of an onshore wind generating station, where—
the station was accredited on or before the onshore wind closure date,
in the Authority's view, the additional capacity first formed part of the station during the period beginning with 1 April 2017 and ending with 31 January 2018, and
both the approved development condition and the investment freezing condition are met in respect of the additional capacity.