CEZ a.s is a Czech energy company of which the government of the Czech Republic is the majority shareholder. CEZ's core business is the generation, distribution, trade, and sale of electricity and heat. With its subsidiaries, the company operates a portfolio of a both conventional and renewable energy power plants. Total energy production is mainly split between facilities utilizing thermal and nuclear inputs. CEZ segments its operations on the basis of both geography and activity into separate Power Production and Trading, Distribution and Sale, and Mining business units for its two primary markets of Central Europe and Southeastern Europe. The company primarily derives its revenue through the production and sale of electricity from its Central European divisions on the wholesale market.