Clean Electricity Regulations — 16
Combustion of biomass 16 (1) For the purposes of paragraph 12 (3)(b), the quantity of CO 2 emissions from the combustion of fossil fuel in a unit during a calendar year must be measured using a CEMS and is determined by the formula E comb × (V ff ÷ V T ) − E s where E comb is the quantity of CO 2 emissions from the unit, expressed in tonnes, from the combustion of fossil fuel and biomass during the calendar year, determined in accordance with section 15 or 17 , as applicable; V ff is the volume of CO 2 emissions from the combustion of fossil fuel in the unit during the calendar year, expressed in m 3 at standard conditions and determined by the formula The sum of the products resulting from the multiplication of Qi, Fc,i and HHVi for each fossil fuel type “i”. where i is the i th fossil fuel type combusted in the unit during the calendar year, where “i” goes from 1 to n and where n is the number of fossil fuel types combusted, Q i is the quantity of fossil fuel type “i” combusted in the unit during the calendar year, determined (a) for a gaseous fuel, in the same manner used in the determination of V f in paragraph 20 (1)(a) and expressed in m 3 at standard conditions, (b) for a liquid fuel, in the same manner used in the determination of V f in paragraph 20 (1)(b) and expressed in kL, and (c) for a solid fuel, in the same manner used in the determination of M f in paragraph 20 (1)(c) and expressed in tonnes, F c,i is the fuel-specific carbon-based F-factor for each fossil fuel type “i” — being either the F-factor set out in Appendix A of the CEMS Protocol or, for fuels not listed in that Appendix, the F-factor determined in accordance with that Appendix — corrected to be expressed in m 3 of CO 2 /GJ at standard conditions, and HHV i is the higher heating value for each fossil fuel type “i” that is measured in accordance with subsection (2) or the default higher heating value set out in column 2 of Schedule 3 for the fuel type set out in column 1; V T is the volume of CO 2 emissions resulting from combustion of fossil fuel and biomass in the unit during the calendar year, expressed in m 3 at standard conditions and determined by the formula The sum of the products of 0.01, CO2w,t and Qw,t for each hour “t”. where t is the t th hour, where “t” goes from 1 to n and where n is the total number of hours during which the unit generated electricity in the calendar year, CO 2w,t is the average concentration of CO 2 in relation to all gases in the stack emitted from the combustion of fuel in the unit during each hour “t” — or, if applicable, a calculation made in accordance with section 7.4 of the CEMS Protocol of that average concentration of CO 2 based on a measurement of the concentration of oxygen (O 2 ) in those gases in the stack — expressed as a percentage on a wet basis, and Q w,t is the average volumetric flow during that hour, measured on a wet basis by a stack gas volumetric flow monitor and expressed in m 3 at standard conditions; and E s is the quantity of CO 2 emissions, expressed in tonnes, that is released from the use of sorbent to control the emission of sulphur dioxide from the unit during the calendar year, as determined by the formula S × R × (44 ÷ MM s ) where S is the quantity of sorbent, such as calcium carbonate (Ca‍CO 3 ), expressed in tonnes, R is the stoichiometric ratio, on a mole fraction basis, of CO 2 released on usage of one mole of sorbent, which is equal to 1 if the sorbent is Ca‍CO 3 , and MM s is the molecular mass of the sorbent, which is equal to 100 if the sorbent is Ca‍CO 3 . Higher heating value (HHV i ) (2) The higher heating value of a fossil fuel must be measured (a) in the case of a gaseous fuel, (i) in accordance with one of the following standards, as applicable: (A) ASTM D1826, entitled Standard Test Method for Calorific (Heating) Value of Gases in Natural Gas Range by Continuous Recording Calorimeter , (B) ASTM D3588, entitled Standard Practice for Calculating Heat Value, Compressibili