# The Climate Change Levy (General) Regulations 2001, Paragraph 2: Calculation of fuels referable to the production of electricity


(1) The extent to which a quantity of a carbon price support rate commodity is referable to the production of electricity in a combined heat and power station is to be determined in accordance with sub-paragraphs (2) (3) and (4).
(2) Calculate the total quantity of input fuels referable to the production of electricity in accordance with the following formula—
(TFI−QHOηh,ref)x(1−MOTPO)Where—
TFI is the CHP Total Fuel Input for the station specified on the current CHPQA certificate relating to the station at the time the quantity of the carbon price support rate commodity is brought onto, or arrives at, the CHPQA site.
QHO is the CHP Qualifying Heat Output for the station specified on the current CHPQA certificate relating to the station at the time the quantity of the carbon price support rate commodity is brought onto, or arrives at, the CHPQA site.
ηh,ref is the reference boiler heat efficiency, taken here to be 81%.
MO is Mechanical Output, which is the amount of energy in megawatt-hours (electrical) (MWhe) generated by the station in a given annual operation that is used to drive a mechanical load (such as a pump, fan or compressor) through direct coupling, without the use of electricity.
TPO is the CHP Total Power Output for the station on the current CHPQA certificate relating to the station at the time the quantity of the carbon price support rate commodity is brought onto, or arrives at, the CHPQA site.
(2A) Sub-paragraphs (2B) to (2E) apply, instead of sub-paragraphs (3) and (4), in relation to carbon price support rate commodities brought onto, or arriving at, a CHPQA site on or after 1st April 2015.
(2B) The extent to which a quantity of a carbon price support rate commodity is referable to the production of non-qualifying electricity in a combined heat and power station is to be determined in accordance with sub-paragraphs (2C) to (2E).
(2C) Calculate the total quantity of input fuels referable to the production of non-qualifying electricity in accordance with the following formula—
Q×(1−ESTPO−MO)Where—
Q is the quantity of input fuels referable to the production of electricity calculated in accordance with sub-paragraph (2);
ES (which must not exceed the QPO) is the amount of qualifying electricity in MWh generated by the station in the annual operation to which the current CHPQA certificate relating to the station applies at the time the quantity of carbon price support rate commodity is brought onto, or arrives at, the CHPQA site;
QPO is the CHP Qualifying Power Output for the station specified on the current CHPQA certificate relating to the station at the time the quantity of carbon price support rate commodity is brought onto, or arrives at, the CHPQA site;
TPO and MO have the meaning given in sub-paragraph (2).
(2D) Calculate the percentage of input fuels referable to the production of non-qualifying electricity in accordance with the following formula—
(RTFI)×100Where—
R is the quantity of input fuels referable to the production of non-qualifying electricity calculated in accordance with sub-paragraph (2C);
TFI has the meaning given in sub-paragraph (2).
(2E) Apply the percentage calculated in accordance with sub-paragraph (2D) to the quantity of carbon price support rate commodities brought onto, or arriving at, the CHPQA site.
(3) Calculate the percentage of input fuels referable to the production of electricity in accordance with the following formula—
QTFIx100Where—
Q is the quantity of input fuels referable to the production of electricity calculated in accordance with sub-paragraph (2).
TFI is the CHP Total Fuel Input for the station specified on the current CHPQA certificate relating to the station at the time the quantity of the carbon price support rate commodity is brought onto, or arrives at, the CHPQA site.
(4) Apply the percentage calculated in accordance with sub-paragraph (3) to the quantity of carbon price support rate commodities brought onto, or arriving at, the CHPQA site.

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Source: https://www.legislation.gov.uk/uksi/2001/838/schedule/3/paragraph/2 (the official version)
Page: https://openlegislation.uk/climate-change-levy-general-regulations-2001/schedule-3/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.