Accelerating India’s Clean Energy Transition: A Special Feature on World Biofuel Day

Accelerating India’s Clean Energy Transition: A Special Feature on World Biofuel Day

From a Simple Experiment to a New Energy Opportunity

Every year on 10 August, World Biofuel Day highlights the growing importance of biofuels as alternatives to conventional fossil fuels. The day commemorates the pioneering work of Sir Rudolf Diesel, who demonstrated in 1893 that vegetable oil, including peanut oil, could power an internal combustion engine.

More than a century later, that early experiment has acquired a new relevance. In India, biofuels are becoming an important part of efforts to strengthen energy security, create value from agricultural and organic waste, support rural economies and develop indigenous clean-energy technologies.

Around 88.5% of India's crude oil requirement is met through imports. At the same time, the country has a large biomass resource base, including sugarcane, molasses, maize, crop residues, cattle dung and organic municipal waste. Turning these resources into energy can reduce waste while creating new economic opportunities.

India's Ethanol Journey

The rapid growth of ethanol blending is one of India's most visible biofuel success stories.

In Ehanol Supply Year 2013-14, ethanol blending in petrol stood at just 1.53%, with around 38 crore litres procured for blending. By ESY 2020-21, blending had risen to 8.17%. India crossed 10% blending in June 2022, five months ahead of the original target.

The growth continued rapidly, reaching 12.06% in ESY 2022-23, 14.60% in ESY 2023-24, and around 19.20% in  2025. India subsequently achieved 20% ethanol blending during ESY 2025-26, five years ahead of the original 2030 target.

This progress has been backed by a major expansion in domestic capacity. Ethanol production capacity increased from around 421 crore litres in 2014 to nearly 2,000 crore litres in 2026.

Procurement has grown from about 38 crore litres in ESY 2013-14 to more than 1,200 crore litres projected for ESY 2025-26.

The impact extends beyond fuel pumps. Since ESY 2014-15, the programme has helped save more than ₹1.97 lakh crore in foreign exchange, substitute around 316 lakh metric tonnes of crude oil, reduce approximately 952 lakh metric tonnes of CO₂ emissions, and transfer more than ₹1.66 lakh crore to farmers, according to Government estimates.

The ethanol experience shows how an energy programme can gradually create benefits across agriculture, industry and the wider economy.

Giving Agricultural Waste a Second Life

The next phase of India's biofuel transition is moving beyond conventional feedstocks towards advanced and second-generation (2G) biofuels.

India generates large quantities of agricultural residues such as rice straw, wheat residues and sugarcane bagasse. 2G technologies can convert these lignocellulosic materials into fuel, creating value from resources that are often difficult to process or transport economically.

The Pradhan Mantri JI-VAN Yojana, extended until 2028-29, supports advanced biofuel projects using agricultural and forestry residues, industrial waste, synthesis gas, algae and other renewable feedstocks.

India's first commercial-scale 2G ethanol project at Panipat, Haryana, was dedicated to the nation in 2022. Such projects are important steps in moving advanced biofuel technologies from research and demonstration towards commercial deployment.

The larger opportunity is simple: agricultural residues can become an economic resource rather than merely a waste-management challenge.

When Waste Becomes Fuel

Biofuels also offer a way to connect waste management with energy production.

The Sustainable Alternative Towards Affordable Transportation (SATAT) initiative, launched in 2018, promotes Compressed Bio-Gas (CBG) produced from agricultural residues, cattle dung, municipal organic waste and other suitable biomass.

To create a stronger market for CBG, a phased CBG Blending Obligation has been introduced for the transport and domestic PNG segments of City Gas Distribution networks. The obligation is 1% in FY 2025-26, rising to 3% in FY 2026-27, 4% in FY 2027-28 and 5% from FY 2028-29 onwards.

By November 2025,  more than 130 CBG plants had been commissioned under SATAT.

For rural India, this can create another source of value. Agricultural residues and animal waste are generated close to villages and farms, while organised collection and processing can connect these resources with commercial energy markets.

Where Science and Technology Make the Difference

Having biomass is only the starting point. Turning it into an affordable and reliable fuel is a scientific and engineering challenge.

Agricultural residues have complex structures that must be broken down before they can be efficiently converted into fuel. Research into biomass pre-treatment, enzymatic conversion, fermentation and anaerobic digestion can help improve yields and reduce costs.

The Department of Science & Technology (DST) supports research in this area through the Clean Fuel Research Initiative (CFRI). The initiative covers clean and alternative fuels, including biomass, biofuels and biogas, along with other renewable and low-carbon fuel pathways.

The challenge is to take promising technologies beyond the laboratory and make them work reliably at commercial scale. This requires better conversion efficiency, lower energy consumption, reduced production costs and effective use of locally available feedstocks.

The next breakthrough may therefore not be a completely new fuel. It could be a more efficient enzyme, a better reactor, a cheaper conversion process or a smarter way of collecting biomass.

Towards a Bio-Based Energy Future

India's biofuel journey has changed significantly in little more than a decade. The country has moved from 1.53% ethanol blending in 2013-14 to 20% in 2025-26, while ethanol production capacity has expanded nearly five times since 2014. At the same time, CBG and advanced 2G technologies are opening new possibilities for agricultural and organic waste.

Challenges remain. Biomass is widely dispersed, collection and transportation can be costly, and advanced technologies still need to become more efficient and commercially competitive. Biofuel development must also remain consistent with food security, water availability and environmental sustainability.

These challenges make continued scientific research and innovation essential.

World Biofuel Day is therefore an opportunity to look at biofuels as more than an alternative fuel. They bring together energy, agriculture, waste management, rural development, industry and science.

The journey that began with Rudolf Diesel's experiment with vegetable oil has entered a new chapter. With the right combination of scientific innovation, policy support and industrial capability, India's biological resources can become an important part of a cleaner, more resilient and self-reliant energy future.


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