Keephills 3 Bookmark and Share

 More Information

Name: Keephills 3
Location: near Wabamun, Alberta
Fuel source: Coal
Type of generating plant: Supercritical coal-fired steam
Year commissioned:  2011
Owned Capacity: 247.5* MW
% Owned/Operated: 50/0


*495-MW facility jointly owned with TransAlta, operated by TransAlta


Facility Facts 

• Jointly owned by Capital Power and TransAlta

• 495-gross-megawatt (MW) (450-MW net) 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

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, using 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 2014