India’s Ethanol Blending Plan: Science and Challenges

• India’s ethanol blending plan is a response to global issues like mileage, corrosion, and higher service costs.

• The government plans to increase ethanol blending in petrol to cut carbon emissions and reduce dependence on foreign oil.

• Vehicles modified for the new composition began rolling out in April 2025.

• Ethanol, a biofuel made from plant waste, acts as an oxygenate when mixed with a fossil fuel like petrol.

• Ethanol’s energy efficiency is influenced by factors like driving habits, maintenance practices, tyre pressure, and air conditioning load.

• Challenges with ethanol include its hygroscopic nature, increased corrosion risk, and potential moisture issues.

• Brazil’s ethanol-blending story may not be justified as the South American country currently uses E27 petrol and has accelerated this upgrade over decades.

India Ethanol Policy is important topic for Civil service exam (WBCS).

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