White swans walk on a frozen lake as steam and smoke rises from the Belchatow Power Station in the background on February 23, 2021 in Rogowiec, Poland. The Belchatow coal-powered station, with an output of 5,472 megawatts, is the world's largest lignite coal-fired power station. The station emits approximately 30 million tones of CO2 per year. The central eastern European country has the EU’s worst air, according to a report published by the European Environment Agency (EEA).