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Genessee 3 (G3) is the first facility in Canada to use supercritical boiler technology. Located 50 kilometers southwest of Edmonton, adjacent to Capital Power's Genesee generating station, the 450-megawatt G3 power plant is a joint venture between TransAlta and Capital Power. Capital Power operates the merchant plant, and both parties independently dispatch and market their share of the electrical output through the Alberta Power Pool.
In a supercritical boiler, less fuel is used to produce the same amount of power. The higher steam temperatures and pressures, together with a high-efficiency steam turbine, means less coal is used per megawatt-hour of electrical energy than in conventional processes. The result is carbon dioxide emissions that are 18 per cent lower per megawatt than at an average coal-fired plant.
At G3, we've taken added precautions to limit nitrogen and sulphur oxide and fine particulate emissions. A $90 million investment in clean air technologies cuts nitrogen oxide emissions in half and stops 99.9 per cent of particulates from entering the atmosphere. It also cuts sulphur dioxide emissions significantly below the provincial emission levels.