In April 2026, the Government of India announced a significant escalation in its biofuel strategy, moving beyond the recently achieved 20% ethanol blending target.
The Ministry of Road Transport and Highways issued a draft notification proposing amendments to the Central Motor Vehicles Rules to formally integrate E85 and E100 fuels into the national transportation framework. This proposal marks a transition from simple blending to the mass adoption of flex-fuel vehicles capable of running on nearly pure ethanol.
By creating regulatory space for fuels composed of 85 percent ethanol (E85) and nearly pure ethanol (E100), the government intends to further decouple the Indian economy from its heavy reliance on imported crude oil.
This shift follows the milestone achievement of the E20 target in 2025, which saved the country approximately Rs 1.65 lakh crore in foreign exchange and reduced crude oil imports by nearly 4.5 crore barrels annually.
While the Ministry of Petroleum and Natural Gas frames this as a vital step toward “pollution-free and indigenous” energy, the aggressive push has triggered an intense debate regarding the long-term sustainability of the program.
Ethanol Fuel Production
Ethanol is a plant-based alcohol produced through the fermentation of sugars. When blended with petrol, it acts as an oxygenated fuel that enhances combustion efficiency and reduces tailpipe emissions.
Because ethanol possesses a higher octane number than gasoline, it allows engines to operate at higher compression ratios, which can improve thermal efficiency if the vehicle is properly tuned.
However, ethanol contains only about two-thirds of the energy density of gasoline, meaning vehicles require more fuel to cover the same distance. In India, this fuel is primarily derived from sugarcane and increasingly from food grains like rice and maize.
India’s Journey Toward High Blends
The path to the 2026 proposal has been marked by rapidly accelerating targets. The National Policy on Biofuels, notified in 2018, originally aimed for 20% blending by 2030. Recognizing the potential for carbon reduction and economic savings, the Cabinet Committee on Economic Affairs advanced this deadline to 2025.
India began this journey with average blending levels of only 1.53% in 2013-2014. Systematic policy interventions, including the introduction of an administered price mechanism and interest subvention schemes for distilleries, saw this figure climb to 5% by 2019-2020 and 10% by 2022.
The roadmap for 2020-2025 established by NITI Aayog focused on pan-India availability of E10 followed by a phased rollout of E20. The current push toward E85 and E100 represents the next frontier, focusing on flex-fuel technologies to reach even higher levels of oil displacement.
Ethanol Blending and Food Safety
The rapid transition to high ethanol blends has placed India at the center of a “food versus fuel” dilemma. To meet the massive demand for E85 and E100, the government is diverting significant portions of the nation’s surplus food supply to distilleries.
For the 2025-2026 period, the target for rice allocation to ethanol production is 90 lakh tonnes, up from 52 lakh tonnes the previous year. To facilitate this, the government has planned to reduce the share of broken rice distributed to the poor through the public distribution system from 25 to 10 percent, according to a report by India Today.
According to a study by Policy Circle, diverting staple grains and molasses for fuel could directly affect food availability and price stability for a growing population. Study indicate that if ethanol is produced solely from “C molasses,” a byproduct of sugar refining, it would require a vast increase in land use, potentially triggering a land and food crisis.
“Since sugarcane is a food crop, an intelligent policy is needed to boost ethanol production and prevent a food and land crisis,” as per a case study published in Science Direct.
Conversely, if primary sugarcane juice is used as the sole feedstock, it could lead to a domestic sugar crisis. Striking a balance between these competing needs is identified as one of the most significant socio-economic challenges of the 2026 proposal.
Hidden Cost Of Water Consumption
Perhaps one of the key environmental risks is the ethanol blending’s massive water footprint. India’s push for ethanol is deeply intertwined with crops that are among the most water-intensive in the country.
According to Food Secretary Sanjeev Chopra quoted in the report by India Today, producing a single litre of ethanol from rice requires approximately 10,790 litres of water, a figure that includes the vast amounts of irrigation needed during cultivation. Maize requires roughly 4,670 litres, and sugarcane consumes about 3,630 litres per litre of ethanol.
The scale of this consumption is particularly alarming given that NITI Aayog’s Composite Water Management Index has warned that groundwater in 21 major Indian cities could reach zero by 2030.
Energy specialist Swathi Seshadri notes that years of sugarcane cultivation have already stressed water tables in states like Maharashtra and Uttar Pradesh, where many ethanol plants are located. These regions are now seeing industrial distilleries draw from the same critically depleted groundwater reserves that local farmers and residents rely on for survival. In states like Maharashtra, plants with a capacity of 396 crore litres are operating even as local populations struggle for basic drinking water.
Ecological Benefits And Pollution Risks
From a carbon perspective, ethanol offers clear advantages over fossil fuels.
A study in Energy for Sustainable Development found that sugarcane-based ethanol can achieve a net negative CO2 emission of -1.61 kg/L because the crops sequester more carbon during growth than is emitted during production, especially if carbon storage plants are installed at distilleries. At the tailpipe, E20 fuel has been shown to reduce carbon monoxide emissions by up to 50 percent in two-wheelers.
However, a review in the journal Energies highlights a significant “ecological paradox”. While 80 percent of reviewed papers show a reduction in global warming potential, many also report an increase in other environmental burdens such as acidification and eutrophication.
These issues are driven by the heavy use of chemical fertilizers and pesticides during the feedstock cultivation stage. Furthermore, ethanol mills generate large volumes of wastewater known as vinasse, which can severely pollute surface and groundwater if not properly treated
What is 2G Ethanol and Can It Help?
Second-generation (2G) ethanol is a biofuel produced from non-food resources and agricultural residues, often referred to as lignocellulosic biomass.
Unlike first-generation (1G) ethanol, which is derived directly from food crops like sugarcane or corn, 2G technology utilizes more complex plant materials composed of cellulose, hemicellulose, and lignin. Common feedstocks for 2G production include rice straw, wheat straw, corn cobs, bamboo, and woody biomass.
2G ethanol is viewed as a more environmentally benign alternative because it reduces the demand for water-intensive crops.
Using residual materials for 2G ethanol results in a significantly lower impact on land-use change compared to primary crops. Research indicates that shifting forests or grasslands to fuel crops can increase greenhouse gas emissions, whereas utilizing biomass residues avoids these negative environmental trade-offs.
It allows for the industrial-scale utilization of agricultural waste that might otherwise be burned in fields.
Government Initiatives for Resource Security
To mitigate risks to water and food security, the Indian government is implementing several strategic measures. According to NITI Aayog’s 2021 Expert Committee Report, a primary focus is encouraging farmers to shift from water-intensive sugarcane and paddy to “more environmentally sustainable crops” like maize.
To safeguard the national food supply, the government is investing ₹1969.50 crore through the PM-JIVAN scheme to develop Second Generation (2G) ethanol. This technology utilizes non-food resources, such as agricultural residues like rice straw and corn cobs, ensuring fuel production does not compete with human food consumption.
Furthermore, to manage the national water crisis, the government is promoting Zero Liquid Discharge (ZLD) systems in distilleries to minimize pollution and water waste. The government is exploring pricing mechanisms that incentivize the use of diverse feedstocks to reduce the ecological burden on water-stressed regions.
With the draft notification for E85 and E100 fuels now out for approval, it will be closely watched how the government translates these policy frameworks into on-ground action, particularly as it seeks to scale up ethanol blending while balancing long-term sustainability concerns.
Balancing Energy Security With Sustainability
India’s push toward E85 and E100 signals a decisive shift toward cleaner, domestically produced fuel, with clear gains in reducing oil imports, lowering emissions, and supporting rural incomes.
Yet, the transition brings real trade-offs, particularly around water stress, food security, and ecological impacts from intensive crop cultivation.
The success of ethanol blending at this scale will depend on how effectively policy balances these competing pressures, especially through sustainable feedstocks and technologies like 2G ethanol, ensuring that energy security does not come at the cost of environmental and social stability.
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