Keephills 3



Keephills 3 Fact Sheet.pdfKeephills 3 Fact Sheet

Facility Information

  • Jointly owned by Capital Power and TransAlta.

  • 516-gross-megawatt (MW) coal-fired generating facility.

  • Construction led by Capital Power. Plant operated by TransAlta.

  • Capital Power and TransAlta independently dispatch and market their share of the unit’s electrical output.

  • Located approximately 70 km west of Edmonton, Alberta, adjacent to TransAlta’s Keephills power plant.

  • One of Canada’s cleanest, most advanced coal-fired facilities.

Facility Facts

​Name​Keephills 3
​Location​near Wabamun, Alberta
Fuel Source​Coal
Year Commissioned​2011
Owned Capacity​258* MW
​ ​ ​*516-MW facility jointly owned with TransAlta, operated by TransAlta

Environmental Performance

  • Superior environmental performance through an advanced air-quality-control system and supercritical boiler technology.

  • Emits 24% less carbon dioxide when producing the same amount of power previously generated by the Wabamun units retired by TransAlta in 2010.

  • Reduced emissions of sulphur dioxide (SO2), nitrous oxides (NOx), and mercury by 60% to 80%.

  • Features:

    • A flue-gas desulphurization unit for removing SO2 from the flue gas.

    • Low NOx staged burners to reduce NOx emissions.

    • A mercury emission control system, likely using activated carbon injection technology.

    • A high-efficiency particulate collection system which uses fabric filters (baghouse) to capture 99.9% of particulate emissions.


Construction of Keephills 3 began in February 2007. At its peak, the project was regarded as one of Canada’s top ten biggest infrastructure projects, with a peak workforce of nearly 1,900 in March 2010. The project’s safety record was one of the best in the industry. 

Last reviewed: January 2016