State owned oil companies are set to play a key role in tackling Delhi’s annual affair with rising air pollution levels due to stubble burning, by setting up around 250 compressed biogas plants over the next one or two years. Compressed biogas, or CBG, is produced by anaerobic decomposition of agricultural waste, sugarcane press mud and municipal waste. It can be used as a fuel for automobiles. Oil marketing companies-Indian Oil Corp. Ltd (IOCL), Bharat Petroleum Corp. Ltd (BPCL) and Hindustan Petroleum Corp Ltd (HPCL) which are setting up 2G ethanol or bio-refineries, will have 20 CBG plants each on the sites, said two oil company officials, requesting anonymity.
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