12. It shall be the duty of the distribution system operator, in accordance with Schedule 2, to—

(a) account to the Commission or transmission system operator, as appropriate, for all transactions relating to the PSO Levy or PSO Payment,

(b) collect from suppliers payments of the PSO Levy paid by final customers,

(c) pay to the transmission system operator all appropriate amounts received by it in respect of the PSO Levy from suppliers, collected from final customers connected to the distribution system,

(d) receive from the transmission system operator amounts received in respect of the PSO Payment, and

(e) pay to suppliers the amount of the PSO Payment to be credited to connected final customers connected to the distribution system, in respect of each supplier supplier’s distribution, as appropriate in each case.]