ASHCOR Technologies Ltd., a company within the Power Generation Group, markets coal combustion products from ATCO Power’s coal-fired generating stations in Alberta. The predominant product marketed by ASHCOR is called fly ash - the non-combustible residue remaining after coal is consumed in a power plant furnace. Designated as a supplementary cementing material, fly ash is primarily used as a partial replacement for Portland cement in concrete products and oil well cementing slurries.