Supreme Court Asks: Where Will the Ethanol Come From for 100% Ethanol Vehicles?
A Supreme Court bench of Justices M M Sundresh and Prasanna B Varale asked the Centre how it would supply enough ethanol if vehicles that run on 100% ethanol (E100) are allowed on Indian roads.
The question came up while the court was hearing a case about how much ethanol each producer gets to sell to the oil marketing companies (OMCs: IndianOil, BPCL and HPCL) for the Ethanol Supply Year (ESY) 2025-26.
The case began in the Karnataka High Court. It asked the three OMCs to consider a request from a dedicated ethanol plant for a bigger share of supply. An OMC appealed, saying this could disturb the national 20% blending (E20) programme. On June 30, the Supreme Court had ordered the position to stay as it is (status quo).
A few days earlier, the Ministry of Road Transport and Highways (MoRTH) amended the Central Motor Vehicles Rules, 1989, adding E100 next to E85 in the emission certification rules for flex-fuel vehicles. These fuels can be used only in vehicles designed by the maker as flex-fuel vehicles.
The Attorney General told the court that running such vehicles at scale would need "large scale" changes in manufacturing arrangements. The bench said the policy must also be judged on public interest, the environment and the welfare of farmers and rural people.
Separately, the Ministry of Petroleum and Natural Gas said there is no immediate plan to raise blending in normal petrol above 20%. The case will be heard again in November 2026.
Ethanol Blended Petrol (EBP) Programme
The Ethanol Blended Petrol (EBP) Programme is the Government of India's plan to mix ethanol, an alcohol made from plants like sugarcane, maize and rice, into the petrol sold at pumps. "E20" means petrol with 20% ethanol and 80% normal petrol. The three public sector oil marketing companies buy ethanol from distilleries and blend it. The aim is to import less crude oil, cut pollution and give farmers an extra market.
The court case is about how ethanol is shared out under this programme for ESY 2025-26. E100 vehicles would need far more ethanol than E20 does, which is why the court asked whether supply can keep up.
Flex-Fuel Vehicle (FFV) Technology
A flex-fuel vehicle (FFV) is a vehicle that can run on normal petrol, on pure or nearly pure ethanol, or on any mix of the two, using one fuel tank and one engine. The driver does not need to press any switch. The vehicle senses how much ethanol is in the tank and adjusts itself. "Flex" is short for flexible: the owner is free to fill whichever ethanol blend is available or cheapest.
The new MoRTH rules opened the door to E100 flex-fuel vehicles. The Supreme Court's question goes to the biggest weakness of FFVs: they are useful only if enough high-ethanol fuel is available, at a fair price, through enough pumps, without hurting farmers or food supply.
Food vs Fuel Debate: Biofuels and Food Security
The food vs fuel debate asks whether crops, land and water should be used to feed people and animals, or to make fuel for vehicles. When sugarcane, maize or rice is turned into ethanol, less of it is left for food, and prices may rise. Supporters say biofuels cut oil imports and pollution and give farmers a steady buyer. Critics worry about food prices, water use and land.
The bench said ethanol policy must weigh farmers' welfare and the environment. That is exactly the food vs fuel balance: E100 vehicles could give farmers a bigger market, but could also pull more food crops and water into fuel.
- Supreme Court bench: Justices M M Sundresh and Prasanna B Varale
- Case: ethanol allocation for Ethanol Supply Year (ESY) 2025-26; appeal against a Karnataka High Court direction
- Supreme Court status quo order on the High Court direction: June 30
- MoRTH amended the Central Motor Vehicles Rules, 1989 (G.S.R. 911(E), published October 2026) to add E100 alongside E85 for flex-fuel vehicles
- E85 and E100 allowed only in OEM-designed flex-fuel vehicles
- Current national blending level: E20 (achieved in 2025); no immediate plan to go above 20% in normal petrol
- BIS standards notified for E22, E25, E27 and E30 petrol (May 2026)
- Ethanol distillation capacity: about 19.9 billion litres a year (February 2026)
- Next hearing: November 2026