Ethanol Blending in India

How India raised the share of ethanol in petrol to 20 percent, the benefits for oil imports and farmers, and the debates over food, water and vehicles.

India imports most of the crude oil it uses, costing huge amounts of foreign exchange. One strategy to reduce this dependence is blending ethanol, an alcohol made from crops, into petrol.

What is ethanol blending?

Ethanol can be mixed with petrol and used in vehicles. E20 means petrol containing 20 percent ethanol. India’s ethanol comes mainly from:

Sugarcane, especially molasses and cane juice.
Grains such as maize and surplus rice.

India’s progress

India’s blending rate rose from under 2 percent around 2014 to about 20 percent in 2025, meeting the E20 target five years earlier than originally planned.

Benefits

Lower oil imports, saving foreign exchange.
Income for farmers and sugar mills, which can divert surplus sugar to ethanol.
Lower some emissions, depending on how ethanol is produced.
Investment in distilleries and rural industry.

Concerns

Food versus fuel: using grain and sugarcane for fuel can raise food prices. Demand for maize for ethanol pushed up maize prices and imports for animal feed.
Water: sugarcane is very water-intensive, and much is grown in water-stressed regions.
Vehicle compatibility: some owners of older vehicles worried that E20 could reduce fuel efficiency or damage engine parts. The government said effects were small, but the debate continued.
Consumer prices: some questioned whether savings were passed to consumers.

Next steps

India is exploring higher blends, flex-fuel vehicles that can run on various ethanol levels, and second-generation ethanol made from crop residues such as rice straw, which could also reduce stubble burning.

The sugar mill's choice

A sugar mill faces low global sugar prices. Instead of producing surplus sugar, it diverts cane juice to make ethanol, which oil companies buy at fixed prices. The mill pays farmers on time, and the country imports slightly less oil.

Thinking biofuels are automatically green

Environmental benefits depend on crops, water use, land and processing. Some biofuels have large hidden costs.

Key takeaways

India raised ethanol blending in petrol to about 20 percent by 2025.
Ethanol comes mainly from sugarcane and grains.
Blending cuts oil imports and supports farmers.
Food prices, water use and vehicle compatibility are key concerns.