15.—(1) The revenue collection counterparty must calculate, in accordance with regulation 16(1), the amounts to be paid as reconciliation payments by electricity suppliers or by that counterparty (“a reconciliation determination”) in respect of a quarterly obligation period (“the reconciliation period”)—
(a)as soon as reasonably practicable after the revenue collection counterparty has issued a notice under regulation 7(4) in respect of the day which is the last day of the reconciliation period, and in any event before the conclusion of the quarterly obligation period which immediately follows the reconciliation period; and
(b)once in every subsequent quarterly obligation period until the final reconciliation determination has been carried out in respect of the reconciliation period, as soon as reasonably practicable after the revenue collection counterparty has issued a notice under regulation 7(4) in respect of the last day of the quarterly obligation period which concluded immediately prior to that subsequent period, and in any event before the conclusion of that subsequent period.
(2) The final reconciliation determination in respect of the reconciliation period is the 10th reconciliation determination made in respect of that period.
(3) Where the revenue collection counterparty makes a reconciliation determination it must, as soon as reasonably practicable, issue a notice to each relevant supplier setting out—
(a)the amount of any reconciliation payment which the revenue collection counterparty must make to that supplier following that determination; and
(b)the amount of any reconciliation payment which that supplier must make to the revenue collection counterparty following that determination.
(4) For the purpose of paragraph (3), a “relevant supplier” is an electricity supplier who—
(a)supplied electricity during the reconciliation period,
(b)is due to make or receive a reconciliation payment, or
(c)is due to make a reserve payment.
16.—(1) The amount of a reconciliation payment to be paid to or by a supplier in respect of the reconciliation period is the revenue collection counterparty’s calculation, at the time of making that calculation, of the RCC period contribution in relation to that supplier in respect of the reconciliation period, less the net levied amount for that supplier in respect of that period.
(2) For the purposes of the calculation of a RCC period contribution, where a Final Reconciliation Volume Allocation Run or Post-Final Volume Allocation Run has not been carried out by the BSCCo in relation to a day in the reconciliation period, the amount of electricity supplied on that day by a supplier is to be determined on the basis of the most recent BSC volume allocation run which the BSCCo has carried out in relation to that day.
(3) Where the amount of a reconciliation payment in relation to an electricity supplier—
(a)is a positive number, that supplier must pay that amount to the revenue collection counterparty;
(b)is a negative number, the revenue collection counterparty must pay the absolute value of that amount to that supplier.
(4) Where, following a reconciliation determination, the revenue collection counterparty must make a reconciliation payment to an electricity supplier, or that electricity supplier must make a reconciliation payment to the revenue collection counterparty, that payment must be made by the 5th working day after the day on which the revenue collection counterparty has issued a notice to that supplier under regulation 15(3) in respect of that reconciliation determination.
(5) Where an electricity supplier is required to pay a reconciliation payment and it fails to pay all or part of that payment by the day on which that payment must be made, that supplier must pay the revenue collection counterparty simple interest on any unpaid amount at the rate specified in regulation 36(1) from the day after the day on which the payment should have been made.
(6) For the purposes of paragraph (1), the net levied amount for a supplier in respect of a reconciliation period is the amount of the supplier obligation amount less the counterparty obligation amount.
(7) For the purposes paragraph (6)—
“the supplier obligation amount” is the sum of the following amounts—
any payment that supplier was required to make under regulation 7(1) in respect of a day in the reconciliation period;
the sum of any payments that supplier was required to make under regulation 8(2) in respect of days in the reconciliation period;
any payment that supplier was required to make under regulation 10(1) in respect of the reconciliation period;
any payment that supplier was required to make under regulation 13(3) in respect of the reconciliation period; and
“the counterparty obligation amount” is the sum of the following amounts—
the sum of any payments the revenue collection counterparty was required to make under regulation 8(3) in respect of days in the reconciliation period; and