India Notifies Use of Ethanol in Sustainable Aviation Fuel Production

The Government of India issued a notification on 17 April 2026 enabling the use of ethanol as a feedstock for producing Sustainable Aviation Fuel (SAF). The move is significant because aviation has been one of the hardest sectors to decarbonise — current technology does not allow batteries or hydrogen to replace jet fuel at commercial scale, leaving SAF as the primary near-term option for reducing aviation emissions.

Sustainable Aviation Fuel is a drop-in fuel that can be blended with conventional jet fuel without major engine modifications. To make jet-grade fuel out of ethanol, refiners use a process called alcohol-to-jet (ATJ). The ethanol is first dehydrated, then its hydrocarbon chains are lengthened through oligomerisation, and finally the resulting hydrocarbons are hydrogenated to meet the specifications of aviation turbine fuel.

For India, the notification ties ethanol policy to climate policy. India already has an ambitious ethanol blending programme for road transport, with E20 (20% ethanol in petrol) being rolled out at fuel pumps. Extending ethanol into aviation creates a new demand outlet for sugarcane and grain-based ethanol producers, supports rural incomes, and helps the country comply with international aviation climate frameworks such as ICAO's CORSIA scheme.

The approach is not without trade-offs. Diverting ethanol to aviation may compete with the road transport blending target. The land, water and food-security implications of expanding feedstock crops also need policy attention. Industry observers note that India will need ATJ-capable refining capacity and supply-chain investment to scale SAF production meaningfully.

Exam angle: This is a science-policy topic with strong UPSC relevance. Remember the date (17 April 2026), the ATJ process steps (dehydrate → chain-lengthen → hydrogenate), the link to E20 and CORSIA, and the policy trade-offs between road blending and aviation use.