Order of the National Green Tribunal in the matter of Vikrant Kumar Tongad Vs. Environment Pollution (Prevention Control) Authority & Others dated 16/11/2017 regarding air pollution due to burning of agricultural residues. NGT directs NTPC to file complete details of its total demand of coal and how much agricultural residue either in the form of pellet or otherwise it can use, if not purely at least mixed with coal, in all the coal based Thermal Power Houses in the States of Punjab, Haryana, Himachal Pradesh and Uttar Pradesh.