Dadri thermal power station has a capacity of 1,820 MW with four units of 210 MW, and two units of 490 MW each (see Table 1: Compliance deadlines for units in Dadri thermal power station). It is operated by NTPC Ltd. The plant is situated in Gautam Buddha Nagar district. It is 100 km away from Delhi, critically polluted area. It sources coal through railways from nearby Piparwara coal mines and water from Upper Ganges Canal.