Power Projects
Cory Cogeneration Station
The Cory Cogeneration Station, a 228-megawatt (MW) natural gas-fired cogeneration facility is located at the Potash Corporation of Saskatchewan Inc.'s (PCS) Cory mine site, near Saskatoon.
The Cory Cogeneration Station is a 50-50 joint venture between SaskPower International Inc. and ATCO Power Ltd.
SaskPower purchases all the electricity generated by the facility and receives a long-term, cost-effective supply of electrical energy and capacity to meet Saskatchewan's future energy needs. The thermal energy is delivered to the PCS-Cory mine site for its use.
The plant operates mostly in highly efficient cogeneration mode, which is the simultaneous production of electricity and steam from a single fuel source using combustion gas turbines, heat recovery steam generators and steam turbine technology. The facility is also convertible to operate in a straight combined cycle mode, a process that combines a natural gas turbine and a steam turbine to generate electricity only. In this mode, the facility can produce 260 MW of electricity.
The plant consists of two natural gas-fuelled combustion turbines and generators. The exhaust gases from each gas turbine are sent through a waste heat recovery boiler to produce steam. This steam is used to power a steam turbine as well as provide all of PCS-Cory's steam requirements.
The Cory Cogeneration Station's state-of-the-art design enables it to generate electricity with minimal effect on the environment. Both of the gas turbines are equipped with low NOx combustors to minimize the environmental impacts of generating electricity. The Cory Cogeneration Station turns approximately 57 per cent of the natural gas's potential energy into electricity and steam - compared to an average of 33 per cent achieved by conventional power stations - while emissions of greenhouse gases are only about one-third of a similarly sized coal-fired power station.
Capacity
- 260 megawatts - combined cycle mode
- 228 megawatts - cogeneration mode
Equipment
- Two - GE PG 7121EA Gas turbines rated at 85 MW
- Two - Heat Recovery Steam Generators rated at 140 tonnes per hour
- One - GE Steam Turbine rated at 90 MW
Highlights
- Natural gas fuel interconnection to TransGas system
- Water supply pipeline interconnection to SaskWater system
- Connection to the Saskatchewan transmission grid
Commercial Operations
- January 2003
Ownership
- SaskPower International Inc. - 50%
- ATCO Power Ltd. - 50%