Despite producing less than 8% of the city's electric power, it produces 80 to 90% of the particulate matter pollution from the electric power sector in Delhi.[16] During the Great smog of Delhi in November 2017, the Badarpur Power Plant was temporarily shut down to alleviate the acute air pollution, but was allowed to restart on 1 February 2018.[17] In view of the detrimental effect to the environment, the power plant has been permanently shut down since 15 October 2018 [18] The drift/mist emissions from the wet cooling towers is also a source of particulate matter as they are widely used in industry and other sectors for dissipating heat in cooling systems.[19] Although Delhi is kerosene free and 90% of the households use LPG for cooking, the remaining 10% uses wood, crop residue, cow dung, and coal for cooking.