For a country that imports over 85% of its crude oil needs, any savings on the import bill is crucial. With the Middle East conflict and US-Iran tensions raising India's crude oil import costs, the use of ethanol-blended petrol has regained focus. Ethanol-blended petrol is made by mixing ethanol with petrol. Ethanol is a biofuel derived from food crops and feedstocks like sugarcane and maize. Under the Ethanol Blended Petrol Programme, the original target for achieving E20 petrol sales across the country was set at 2030, later advanced to 2025-26. From April 1, 2026, the mandated standard petrol across India will be E20, which contains around 20% ethanol.
Logic Behind Ethanol Blending
With a biofuel in the mix, E20 petrol aims to lower emissions while reducing the requirement of petrol in the fuel mix, thereby building energy security in the long run. Union minister Nitin Gadkari has been pushing for 100% ethanol-blended petrol, which would contain over 90% ethanol.
E20 Petrol: Forex and Crude Bill Savings, Energy Security Focus
According to latest government estimates, the ethanol blending programme has resulted in foreign exchange savings of around Rs 1.59 lakh crore. It has also led to a reduction of 813 lakh metric tonnes of carbon dioxide emissions and substituted around 270 lakh metric tonnes of crude oil since 2014.
Sourav Mitra, Partner - Oil & Gas at Grant Thornton Bharat, notes that a recent RBI research paper estimates a 10% rise in crude prices can lead to a 0.20% rise in domestic inflation. Ethanol blending strengthens India's energy security and cushions the economy from global oil price shocks. Replacing a portion of petrol demand, derived from imported crude, with domestically produced ethanol diversifies India's transport fuel basket. This lowers exposure to volatile international crude prices, improves balance-of-payments stability during oil price spikes, and reduces inflationary pressures.
CHUA Wei Jun, Principal Biofuels Analyst at S&P Global Energy, adds that India's ethanol blending programme reduced crude processing by about 9% in 2025, projected to increase further in 2026 as the 20% blending rate was achieved since late last year. This translates to around one billion dollars in savings from reduced crude imports, expected to nearly double as crude prices remain high due to war-related supply disruptions.
Benefits Beyond Energy Security and Crude Oil Bills
Ethanol blending also benefits the agriculture sector. It creates stable, counter-cyclical domestic demand for agricultural produce, redirecting energy spending from overseas oil suppliers to Indian farmers and rural industries, strengthening rural incomes and reducing macroeconomic vulnerability during global energy disruptions, says Mitra.
Manas Majumdar, Leader Oil & Gas, Fuels & Resources at PwC India, says the Ethanol Blended Petrol Programme (EBP) helps diversify transport fuel supply and build domestic value chains that cushion the economy during global crude price spikes. Government measures such as expanding permitted ethanol feedstocks, administered pricing for molasses-based ethanol procurement, long-term offtake agreements between OMCs and dedicated ethanol facilities, supporting advanced biofuel projects through schemes like PM JI-VAN, facilitating multimodal ethanol movement, and expanding storage and handling infrastructure collectively build a robust domestic biofuel ecosystem.
EBP has facilitated direct payments of over Rs 1.4 lakh crore to farmers over the last decade, directly supporting farm incomes and strengthening the rural economy. If global oil price spikes impact prices and demand, ethanol-linked rural income flows can act as a partial stabilizer, especially in agrarian regions.
Internationally, Brazil's long-standing E27 gasoline blend and flex-fuel vehicle ecosystem show how biofuels can structurally reduce oil-price vulnerability. For India, the same logic strengthens energy security, rural income stability, and supply diversification, says Majumdar.
CHUA Wei Jun notes that ethanol blending has provided the sugar industry with a stable revenue stream, mitigating volatility in the sugar market, absorbing surpluses, and incentivizing farmers. Moreover, the life-cycle emissions of ethanol-blended petrol are significantly lower than those of unblended petrol, aligning with India's long-term net-zero goals.
Challenges and Concerns
Despite forex savings and energy security benefits, several challenges need to be addressed to maximize gains. The food versus fuel debate persists: if emphasis is on feedstock for blending, will food security be compromised? There are also concerns about the impact of E20 petrol and higher blends on vehicles.
Last year, the government sought to allay concerns by citing studies from NITI Aayog, IOCL, ARAI, and SIAM. According to the government, concerns about significant mileage loss, vehicle damage, and insurance issues are largely unfounded. Any efficiency impact is marginal, while E20 offers higher octane levels, better engine performance, and lower carbon emissions. However, some concerns persist among users of older, non-E20 compliant vehicles. Saurav Mitra underscores the importance of a well-sequenced rollout, supported by improved consumer awareness, vehicle calibration, and gradual fleet transition.
Key Challenges
- Feedstock challenge: Dependence on sugarcane, maize, and grains creates supply volatility amid food-vs-fuel concerns and seasonal availability cycles.
- Capacity challenge: Heavy reliance on 1G ethanol, which uses food crops directly. Scaling up 2G and 3G ethanol using crop residues, agricultural waste, and lignocellulosic biomass can reduce dependence on food crops.
- Logistics challenge: Production is concentrated in a few states, requiring stronger transport, storage, and blending infrastructure.
- Storage and distribution gap: More blending terminals, dedicated tanks, and depot-level segregation for E0, E10, and E20 fuels are needed.
- Sustaining E20: Reliable year-round feedstock supply and efficient nationwide logistics are required to maintain higher blending levels.
- Water consumption: Rice-based ethanol requires about 10,790 litres of water per litre of ethanol, compared to 4,670 litres for maize and 3,630 litres for sugarcane, highlighting the need for less water-intensive feedstocks.
- No separate target for 2G ethanol: Introducing phased 2G ethanol sub-targets could create assured demand, strengthen investor confidence, and increase the share of advanced biofuels.
- Advanced biofuels at early stage: Continued R&D, technology upgrades, and innovation are critical for long-term success.
International Standards
Globally, Brazil is the gold standard for ethanol-blended petrol. Brazil currently operates at E30, with a proposal to raise the mandatory blend to 32%. Widespread ethanol availability, decades of investment in flex-fuel vehicles, sugarcane-based ethanol, and integrated agro-industrial policies underpin Brazil's success. Over 80% of new vehicle sales in Brazil can run on high ethanol blends, including E100, says Saurav Mitra.
In the United States, E10 remains the dominant blend. E15 is permitted for newer vehicles (post-2001), but its adoption has been constrained by Clean Air Act Reid Vapor Pressure limits restricting summer sales. Despite abundant ethanol supply, higher blends have not scaled rapidly due to regulatory uncertainty, infrastructure constraints, and partial vehicle compatibility.
Most EU countries, except France with Superéthanol-E85, operate at E10 blends, reflecting a cautious approach. Against this backdrop, India's move toward E20 is ambitious, particularly for a predominantly non-flex-fuel fleet. Among major economies, India is surpassed only by Brazil. The international experience shows that higher ethanol blends scale successfully only when vehicle readiness, feedstock sustainability, and consumer choice evolve in tandem, providing lessons for India to catch up to Brazil.
The Middle East crisis has highlighted the vulnerability in global supply chains and the importance of energy security. As India builds strategic petroleum reserves and diversifies into renewable energy, blending ethanol in petrol to reduce imports will play a crucial role. However, supply chain and implementation challenges must be overcome to step up blending percentages for more notable gains and agriculturally sustainable benefits.
