CEZ is an electricity generation company that engages in the production, distribution, trade, and sale of electricity and heat, trade and sale of natural gas, and mining of coal. It operates through Generation-Traditional Energy, Generation-New Energy, Distribution, Sales, Mining, and Other segments. The company generates fossil fuel, hydro, wind, solar, biogas, biomass, gas, and nuclear-powered electricity. It is also involved in mining and processing limestone. In addition, the company engages in telecommunications, informatics, nuclear research, raw materials mining, and energy by-products processing activities, and planning, construction, and maintenance of energy facilities.