Regulations Limiting Carbon Dioxide Emissions from Natural Gas-fired Generation of Electricity — 4
General 4 (1) A responsible person for a unit must not emit from the unit an amount of CO 2 from the combustion of fossil fuels in the unit, that is, during a calendar year, on average, greater than any of the following intensity limits, as applicable: (a) 420 tonnes of CO 2 emissions/GWh of energy produced (i) in the case of boiler units, other than those referred to in subsection 3 (4), and (ii) in the case of combustion engine units that are equipped with at least one combustion engine that has a capacity of more than 150 MW; and (b) 550 tonnes of CO 2 emissions/GWh of energy produced in the case of combustion engine units that are equipped with combustion engines that have a capacity of 150 MW or less. Significantly modified boiler units (2) It is prohibited for a responsible person for a boiler unit referred to in subsection 3 (4) to emit from the boiler unit an amount of CO 2 , from the combustion of fossil fuels in the unit, that is, during a calendar year, on average, greater than 420 tonnes of CO 2 emissions/GWh of energy produced, as applicable, beginning in (a) the year after the unit’s end of useful life, if the initial performance test conducted under subsection 5 (1) indicates a CO 2 emissions intensity greater than 600 t/GWh; (b) the sixth year after the unit’s end of useful life, if the initial performance test conducted under subsection 5 (1) indicates a CO 2 emissions intensity greater than 550 t/GWh and less than or equal to 600 t/GWh; (c) the ninth year after the unit’s end of useful life, if the initial performance test conducted under subsection 5 (1) indicates a CO 2 emissions intensity greater than 480 t/GWh and less than or equal to 550 t/GWh; or (d) the eleventh year after the unit’s end of useful life, if the initial performance test conducted under subsection 5 (1) results in a CO 2 emissions intensity less than or equal to 480 t/GWh. Quantification of energy and emissions (3) For the purposes of subsections (1) and (2), (a) the quantity of energy produced in the calendar year must be determined in accordance with section 11 ; and (b) the quantity of CO 2 emissions produced in the calendar year must be determined in accordance with sections 12 to 18 , as applicable. Special Rules (4) For the purposes of subsection (3), if, in the calendar year, one of the combustion engines of the unit is repaired or maintained and one or more replacement combustion engines are temporarily installed, the quantity of energy and CO 2 emissions produced during the replacement period, to a maximum of 90 days per calendar year, are excluded from the calculation referred to in that paragraph. Exception — boiler unit (5) Despite subsection (1), a boiler unit that, in a calendar year, does not meet one of the conditions set out in subsection 3 (1), is not subject to the emission intensity limit for that calendar year. Exception — combustion engine (6) Despite subsection (1), a combustion engine unit that, in a calendar year, does not meet one of the conditions set out in subsection 3 (2), is not subject to the emission intensity limit for that calendar year.