A renewables obligation order may—
make further provision as to the functions of the Authority in relation to the matters dealt with by the order;
make transitional provision and savings;
provide for anything falling to be calculated or otherwise determined under the order to be calculated or determined by such persons, in accordance with such procedure and by reference to such matters and to the opinion of such persons, as may be specified in the order;
make different provision for different cases or circumstances.
Provision made by virtue of subsection (1)(b) may, in particular, include provision about the treatment of certificates issued under section 32B before the substitution of that section by section 37 of the Energy Act 2008 or certificates referred to in section 38(2)(b) of the Energy Act 2008 (Northern Ireland certificates issued under the Energy (Northern Ireland) Order 2003 before 1st April 2009).
Provision made by virtue of subsection (1)(d) may, in particular, make—
different provision in relation to different suppliers;
different provision in relation to generating stations of different descriptions;
different provision in relation to different localities.
In subsection (3) "supplier" means an electricity supplier or a Northern Ireland supplier.