(1) The energy ombudsman must give the parties written notice (a decision notice) of--
(a) the ombudsman's decision under section 34; and
(b) the reasons for the decision.
(2) If the decision is to make a final order, the decision notice must state that--
(a) the non-entity party may, by written notice to the energy ombudsman, elect to accept or not to accept the order; and
(b) a notice electing not to accept may be given only within 21 days after the non-entity party receives the decision notice; and
(c) if a notice electing not to accept is not given within the 21 days, the non-entity party is taken to have elected to accept the order and to be bound by it.