(1)For the purposes of a claim for allowable costs by a generating undertaking, the amount (if any) of “exceptional generation fuel costs” of a relevant generating station for a qualifying period is to be determined as follows—
Step 1
Determine the generation fuel costs for the station for that period.
Step 2
Divide the amount of those costs by the amount of electricity generated by the station in that period (expressed in megawatt hours) that are attributable to a generating undertaking.
Step 3
Determine the baseline fuel cost of the station.
Step 4
If the result of Step 2 is the same as or less than the baseline fuel cost, there are no exceptional generation fuel costs of the station for that period.
Step 5
If the result of Step 2 is greater than the baseline fuel cost, subtract the baseline fuel cost from the result of Step 2.
Step 6
Multiply the amount of electricity generated by the station that is attributable to a generating undertaking in that period by the result of Step 5 to give the amount of exceptional generation fuel costs of the station for that period.
(2)The “generation fuel costs” of a relevant generating station for a period means costs which, on a fair and reasonable basis, can be directly attributed to the acquisition of fuel used for generating electricity in that period (which may include the costs of transporting such fuel) that is attributable to a generating undertaking.
(3)The baseline fuel cost of a relevant generating station is the lesser of—
(a)the average generation fuel costs of the station per megawatt hour for the reference period specified in the claim for allowable costs, determined on a fair and reasonable basis (and which cannot be less than nil), and
(b)£65 per megawatt hour.
(4)Subject to subsection (5), the reference period that may be specified in the claim must—
(a)be a period of at least 12 months in which there is a period of 3 months where the generating station was generating on 50% or more of the days in that 3 month period,
(b)commence no earlier than 1 January 2017, and
(c)end no later than 1 March 2020.
(5)Where a reference period cannot be specified in the claim in accordance with subsection (4) because there is no period of at least 12 months between 1 January 2017 and 1 March 2020 in which there is a period of 3 months where the generating station was generating on 50% or more of the days in that 3 month period—
(a)a period of 12 months commencing no earlier than 1 January 2017 and ending no later than 1 March 2020 may be specified as the reference period,
(b)the average generation fuel costs of the station for the purposes of subsection (3)(a) is to be determined as a fair and reasonable estimate of what those costs would have been—
(i)had the generating station been generating in that period, and
(ii)had it been generating on a similar basis in that period as it had been generating in the period of 12 months ending with the end of the qualifying period to which the claim relates.
(6)Where a generating station uses more than one type of fuel, a generating undertaking making a claim for allowable costs in respect of the exceptional fuel costs of that station may calculate the exceptional generation fuel costs in relation to each type of fuel separately, and may specify different reference periods for those calculations.
(7)Where a generating undertaking makes a claim for allowable costs in respect of exceptional generation fuel costs of two or more generating stations that use the same type of fuel, the same reference period must be specified in relation to the calculation of exceptional generation costs in relation to fuel of the same type.