Regulations 3, 6 to 10, 20 and 21
SCHEDULE 1Calculation of amounts
Interpretation
1. In this Schedule—
(a)“WFmx”, in relation to a month of a delivery year, means the weighting factor calculated for that month under paragraph 2 of Schedule 1 to the Principal Regulations; and
(b)a term preceded by “∑s” means the sum of the amounts represented by that term for all electricity suppliers.
Capacity market supplier charge: provisional annual calculations
2.—(1) The Settlement Body must, by no later than three months before the start of a delivery year (“year X”), for each electricity supplier (“S”) calculate—
(a)S’s provisional share of capacity market supplier charges in respect of year X (“PSCsx”);
(b)S’s provisional capacity market supplier charge in respect of year X (“PACMSCsx”);
(c)S’s provisional monthly capacity market supplier charge in respect of each month of year X (“PMCMSCsm”).
(2) PSCsx must be calculated in accordance with the formula—
(3) PACMSCsx must be calculated in accordance with the formula—
(4) PMCMSCsm must be calculated in accordance with the formula—
(5) In this paragraph—
“∑iACPix” means the sum of ACPix (the total amount of capacity payments payable in respect of a capacity committed CMU), as calculated under paragraph 3 of Schedule 1 to the Principal Regulations, for all capacity committed CMUs in respect of year X; and
“FSSPDsx” means the amount of the forecast given by S to the Settlement Body for year X under regulation 4(2).
Capacity market supplier charge: revised annual calculations
3.—(1) The Settlement Body must, as soon as reasonably practicable after net demand data for all periods of high demand in year X is available, calculate for each electricity supplier (“S”)—
(a)S’s revised share of capacity market supplier charges in respect of year X (“RSCsx”);
(b)S’s revised capacity market supplier charge in respect of year X (“RACMSCsx”);
(c)S’s revised monthly capacity market supplier charge in respect of each month of year X (“RMCMSCsm”).
(2) RSCsx must be calculated in accordance with the formula—
(3) RACMSCsx must be calculated in accordance with the formula—
(4) RMCMSCsm must be calculated in accordance with the formula—
(5) In this paragraph—
“∑iAACPix” means ∑iACPix, within the meaning given in paragraph 2(5), minus any reductions in the total amount of capacity payments payable to capacity providers in respect of year X as a result of—
a capacity agreement being terminated; or
a capacity payment being reduced or forfeited under the Principal Regulations;
“ASSPDsx” means the actual net demand of S during periods of high demand in year X.
Capacity market supplier charge: monthly calculations
4.—(1) The Settlement Body must, by no later than the first day of each month (“month M”) of a delivery year calculate for each electricity supplier (“S”) the monthly capacity market supplier charge (“MCMSCsm”) payable by S in respect of month M.
(2) If the date on which the Settlement Body calculates MCMSCsm (“the calculation date”) is before the date on which the Settlement Body makes the calculations required by paragraph 3, then MCMSCsm is equal to PMCMSCsm.
(3) If the calculation date is on or after the date on which the Settlement Body makes the calculations required by paragraph 3, then MCMSCsm is equal to RMCMSCsm.
(4) In this paragraph—
“PMCMSCsm” means the amount calculated under paragraph 2(1)(c) for electricity supplier S and month M;
“RMCMSCsm” means the amount calculated under paragraph 3(1)(c) for electricity supplier S and month M.
Capacity market supplier charge: mutualisation payments
5.—(1) If, in respect of a month of a delivery year (“month M”), one or more electricity suppliers is in capacity market stage 2 credit default, the Settlement Body must calculate in accordance with sub-paragraphs (2) and (3) the mutualisation payment to be made by each electricity supplier (“S”) who is not in such default (“MPsm”).
(2) If the calculation date is before the date on which the Settlement Body makes the calculations required by paragraph 3, then MPsm must be calculated in accordance with the formula—
(3) If the calculation date is on or after the date on which the Settlement Body makes the calculations required by paragraph 3, then MPsm must be calculated in accordance with the formula—
(4) In this paragraph—
“∑dPMCMSCdm” means the sum of the amounts calculated under paragraph 2(1)(c) for month M for every electricity supplier who is in capacity market stage 2 credit default in respect of month M;
“PSCsx” means the amount calculated under paragraph 2(1)(a) for supplier S and year X;
“∑nPSCnx” means the sum of the amounts calculated under paragraph 2(1)(a) for year X for every electricity supplier who is not in capacity market stage 2 credit default in respect of month M;
“∑dRMCMSCdm” means the sum of the amounts calculated under paragraph 3(1)(c) for month M for every electricity supplier who is in capacity market stage 2 credit default in respect of month M;
“RSCsx” means the amount calculated under paragraph 3(1)(a) for supplier S and year X;
“∑nRSCnx” means the sum of the amounts calculated under paragraph 3(1)(a) for year X for every electricity supplier who is not in capacity market stage 2 credit default in respect of month M; and
“year X” means the delivery year in which month M falls.
Penalty residual supplier amount
6.—(1) The Settlement Body must, as soon as reasonably practicable after the end of a delivery year (“year X”), calculate for each electricity supplier (“S”) the penalty residual supplier amount (“PRSAsx”) which is due to S in respect of year X.
(2) PRSAsx must be calculated in accordance with the formula—
(3) In paragraph (2)—
“CMSCPsx” means the total amount of capacity market supplier charges paid by S in respect of year X;
“∑iODPix” means the sum of the amounts calculated under paragraph 7(1)(c) of Schedule 1 to the Principal Regulations for all relevant CMUs (within the meaning given in that paragraph) for year X;
“TPRx” means the total amount of capacity market penalty charge payments received by the Settlement Body under the Principal Regulations in respect of year X.
Settlement costs levy: provisional calculations
7.—(1) The Settlement Body must, by no later than the start of a relevant financial year (“year Y”), for each electricity supplier (“S”) calculate—
(a)S’s provisional share of the settlement costs levy in respect of year Y (“PSLsy”);
(b)S’s provisional monthly settlement costs levy in respect of each month of year Y (“PMLsm”).
(2) PSLsy must be calculated in accordance with the formula—
(3) PMLsm must be calculated for each month of year Y (“month M”) in accordance with the formula—
(4) In this paragraph—
“ASCLy” is the amount specified in regulation 9(2) as the total amount which may be charged to all electricity suppliers in respect of the settlement costs levy for year Y;
“ASSPDsr” means—
subject to paragraph (b), the actual net demand of S is responsible during periods of high demand (“AD”) in the relevant months; or
if, at the date on which the calculation in sub-paragraph (2) is to be made, the Settlement Body does not have the data necessary to calculate AD for all electricity suppliers for one or more of the relevant months, AD in the relevant months for which the Settlement Body has that data;
“the relevant months” means November to February of the financial year preceding year Y.
Settlement costs levy: revised calculations
8.—(1) The Settlement Body must, as soon as reasonably practicable after 16th March in a relevant financial year (“year Y”), calculate for each electricity supplier (“S”)—
(a)S’s revised share of the settlement costs levy in respect of each month of year Y for which S is liable to pay settlement costs levy (“RSLsm”);
(b)S’s revised monthly settlement costs levy in respect of each month of year Y (“RMLsm”).
(2) RSLsm must be calculated in accordance with the formula—
(3) RMLsm must be calculated in accordance with the formula—
(4) In this paragraph—
“ASCLy” has the same meaning as in paragraph 7;
“ASSPDsy” means the actual net demand of S during periods of high demand in year Y;
“∑lASSPDly” means the sum of those amounts of actual net demand for every electricity supplier who is liable to pay settlement costs levy in the relevant month.
Settlement costs levy refund
9.—(1) The Settlement Body must calculate the amount (“SCLRsy”) of the refund payable to each electricity supplier (“S”) who has paid a settlement costs levy payment in a relevant financial year (“year Y”) in accordance with the formula—
(2) In this paragraph—
“AR” and “SC” have the meanings given in regulation 10;
“SCLPsy” means the amount of settlement costs levy paid by S in respect of year Y.