Archive · 20 Aug 2025
India Explores Isobutanol Blending to Clean Up Diesel Fuel
India is looking to blend isobutanol, a fuel made from ethanol, with diesel to make it cleaner.
The plan is to have new engines that can use both diesel and isobutanol.
Scientists are testing how well this works, starting with a 10% blend.
This move aims to cut down on how much diesel India uses and reduce the cost of importing fuel.
Isobutanol is better than ethanol for this because it's less corrosive and has more energy.
Tests suggest this blend could lower pollution from diesel vehicles.
India is considering blending isobutanol with diesel for cleaner fuel.
The government plans new flex-fuel engines that can run on diesel and isobutanol blends.
ARAI is studying the feasibility of 10% isobutanol-blended diesel.
This initiative aims to reduce diesel consumption and lower the fuel import bill.
Isobutanol is less corrosive and has a higher energy density than ethanol.
- Who
- The Indian government, ARAI, automobile manufacturers, and oil companies are involved.
- What
- The Indian government is considering blending isobutanol with diesel fuel.
- When
- Tests and studies are currently underway, with plans for implementation in the coming years.
- Where
- India
- Why
- To reduce emissions, decrease reliance on imported fuel, and lower the fuel import bill.
Concerns and Challenges
Government's Strategy
Fuel Compatibility
Concerns and Challenges
Initial tests with ethanol in diesel resulted in fuel tank deposits.
Government's Strategy
It is expected that isobutanol is less corrosive and thus will perform better than ethanol.
- Isobutanol Blend Target
- 10% (initial study)
- Diesel Consumption (FY25)
- Over 91 million tonnes
- Petrol Consumption (FY25)
- About 40 million tonnes
- Crude Oil Import Cost
- $137 billion (FY25)
- Ethanol in Diesel (Previous Test)
- 5%
