5.—(1) The Authority may, after consulting gas suppliers and persons or bodies appearing to the Authority to be representative of persons likely to be affected, from time to time—
(a)determine such standards of performance in connection with the promotion of the efficient use of gas by consumers as, in the Authority’s opinion, ought to be achieved by gas suppliers; and
(b)arrange for the publication, in such form and in such manner as the Authority considers appropriate, of the standards so determined.
(2) Different standards may be determined for different gas suppliers if the Authority is of the opinion that the differences are such that no gas supplier would be unduly disadvantaged in competing with other gas suppliers.
(3) Each gas supplier shall, in such form and manner and with such frequency as the Authority may direct, take steps to inform the customers of the supplier of—
(a)the standards determined under this section which are applicable to that supplier; and
(b)that supplier’s level of performance as respects those standards.