India, June 1 -- After the uniform and mandatory rollout of 20% ethanol blended petrol across India, commonly known as E20, the Indian government is likely to mandate the isobutanol blending in diesel by the end of this year. V Umashankar, Secretary at the Ministry of Roads, Transport and Highways (MoRTH), has said that the government is likely to bring a mandate on blending isobutanil with diesel as early as this year to improve energy security in the country and decarbonise the road and highways sector.

Currently, petrol across India is sold with 20% ethanol blended since April 2025. The country achieved the target of E20 well ahead of the original deadline. Now, with the plan to blend isobutanol in diesel, the Indian government believ...