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

(a) account to the Commission for all transactions relating to the PSO Levy or PSO Payment,

(b) collect any additional benefits due, under Article 8(1) from the Board or relevant suppliers connected to the transmission system, as applicable,

(c) collect from suppliers payments of the PSO Levy paid by final customers connected to the transmission system,

(d) pay to suppliers the amount in respect of the PSO Payment to be credited to final customers connected to the transmission system, as appropriate,

(e) receive from the distribution system operator amounts received in respect of the PSO Levy, and

(f) pay to the distribution system operator the amounts in respect of the PSO Payment to be paid to suppliers.]