2  Calculation of the Monthly Unitary Payment

2.1  The Monthly Unitary Payment payable in respect of any Contract Month after the Services Availability Date shall be calculated by adding to the Monthly Unitary Charge for Contract Month (n) the Monthly Utility Services Payment for Contract Month (n) the Pass Through Costs for Contract Month (n) and by deducting the Total Deductions relating to the pre-preceding month (n-2), and, if applicable, the Annual Utility Adjustment in accordance with the following formula:

MUPn = MUCn +PTCn - ∑UD - ∑PD + MUSPn +/- AUA

Where:

MUPn  =  the Monthly Unitary Payment for Contract Month (n);

MUCn  =  the Monthly Unitary Charge for Contract Month (n) (as calculated by the formula in paragraph 3.2);

PTCn  =  the Pass Through Costs for Contract Month (n)

∑UD  =  the sum of Unavailability Deductions in respect of the relevant Contract Month calculated in accordance with the provisions set out in Part 3 of this Schedule;

∑PD  =  the sum of Performance Deductions in respect of the relevant Contract Month calculated in accordance with the provisions set out in paragraphs 3 and 4 of Part 4 of this Schedule, including PD1, PD2 and PD3;

MUSPn  =  the Monthly Utility Services Payment for Contract Month (n);

AUA  =  any Annual Utility Adjustment as may be applicable in respect of the previous Contract Year;