Because lignite quality varies greatly, to estimate the carbon dioxide emissions from a particular power station, the net calorific value of the lignite it burnt must be reported to the government but is not published, unlike some other countries. However public information from space-based measurements of carbon dioxide by Climate TRACE is expected to reveal individual large plants before the 2021 United Nations Climate Change Conference, and smaller ones by GOSAT-GW in 2023 and Sentinel-7 (CO2M) possibly in 2025.