36.—(1) The Settlement Body must make the calculations set out in this Part and Schedule 1 (the “settlement calculations”)—
(a)by such date as may be specified or, where no date is specified, by such time as is necessary to enable the Settlement Body to comply with the regulations in this Part; and
(b)so far as possible, using the required data.
(2) Where, by the time a settlement calculation is to be made, the Settlement Body has not been provided with any required data which is necessary for that calculation, the calculation must be made using the best data available to the Settlement Body.
(3) In this regulation, “required data” means data which is required to be provided to the Settlement Body under capacity market rules.
37.—(1) Where a capacity provider (“C”) fails to comply with a requirement in capacity market rules to provide data to the Settlement Body, the Settlement Body must give a notice to C that C is in default (a “data default notice”).
(2) A data default notice may be varied by the Settlement Body and must be revoked when C has provided all the data required by capacity market rules.
38.—(1) An invoice or credit note issued by the Settlement Body must set out the determination of the amount which the recipient is liable to pay, or is entitled to receive, in such detail as will readily show the recipient how the determination has been made.
(2) An invoice must specify the day by which it is to be paid, which must be not less than 3 working days after the date on which the invoice is issued.
(3) Each electricity supplier and capacity provider must provide the Settlement Body with an address for electronic service of invoices and credit notes.
(4) Where an electricity supplier or a capacity provider has complied with paragraph (3), the Settlement Body must send an invoice or credit note electronically to the address provided.