Tauron Polska Energia is engaged in the generation, transmission, distribution, and sale of electricity and heat in Poland. Co. generates electricity from various conventional and renewable energy sources, including hard coal, lignite, natural gas, biomass, wind, solar, and hydro power. It is also involved in quarrying, crushing, and breaking of limestone; quarrying of stone for the construction industry; mining of hard coal; trading in electricity; and production of technical gases. In addition, Co. engages in the repair and maintenance of machinery and electrical equipment; electrical installations; and construction of power lines.