 The coal-fired power plant "Bajina Bašta" began with the production of electricity a year later.The two largest power plants in Serbia, the hydroelectric power plant HPP Đerdap I at the Danube river and the coal power plant TENT, went into operation in 1970.Twelve years later, the pumped storage plant "Bajina Bašta" was built, and in 1990 the hydroelectric power station "Pirot" was put into operation.