Trbovlje (population 16,290) is a town and municipality in central Slovenia. Located in the eponymous valley of Trbovlje by the river Sava, the area is known for its rich deposits of coal and one of its three power plants features Trbovlje Chimney - reputedly the Europe's tallest chimney (360 m). In the past years it has also become notorious for its co-incineration plant designated to be built in Trbovlje's cement factory.