The Ministry of Environment & Forests (MoEF) has classified TPPs as one of the 17 Red Category industries. Red Category denotes heavily polluting industry. For obtaining EC:
Category A projects are:
1) > 500 MW Coal/Lignite/Naphtha & Gas Based Fuel.
2) > 50 MW Petcoke, Diesel and all Other Fuels, including Refinery Residual Oil Waste (excluding Biomass).
3) > 20 MW Biomass Based or Non-Hazardous MSW (Municipal Solid Waste) as Fuel.
Category B projects are -
1) < 500 MW Coal/Lignite/Naphtha & Gas Based Fuel.
2) <50 MW or 3 MW Petcoke, Diesel and all Other Fuels, including Refinery Residual Oil Waste (excluding Biomass).
3) < 20 MW or 15MW Biomass Based or Non-Hazardous MSW (Municipal Solid Waste) as Fuel.