India’s ethanol blending programme has moved at a pace few clean-energy policies have
matched. The country hit its 20% ethanol blending (E20) target in April 2026 – nearly five
years ahead of the original 2030 deadline. And almost immediately, the conversation has
shifted.
In May 2026, the Bureau of Indian Standards (BIS) notified technical specifications for E22,
E25, E27, and E30 fuels, opening the door to ethanol blends well beyond the current
mandate. The Petroleum Ministry has asked the Automotive Research Association of India
(ARAI) to study the impact of E25 fuel on engine life and mileage in existing E10- and
E20-compliant vehicles.
The direction of travel is clear: India is preparing for a future where one in four litres of petrol
is ethanol.
But behind the policy momentum sits a harder question. Can India actually produce
enough ethanol – sustainably – to meet E25 and beyond?
The answer, increasingly, points in one direction. Second-generation (2G) ethanol –
produced from agricultural residues like rice straw – is no longer a long-term
aspiration. It is becoming a near-term necessity.
Why India Is Pushing Beyond E20
The push to E25 is not happening in a vacuum. It is being driven by a convergence of
pressures – geopolitical, economic, and environmental – that have made ethanol one of the
most strategically important fuels in India’s energy mix.
1. Crude Oil Volatility Has Become Structural, Not Cyclical
India imports more than 85% of its crude oil requirement, making it the world’s
third-largest oil importer at around 5.5 million barrels per day.
The disruptions of the past year have made that dependence painfully visible:
- The Strait of Hormuz crisis in early 2026 disrupted approximately 40% of India’s
crude oil imports, over 50% of urea imports, and nearly 90% of LPG imports
simultaneously. - About 52% of India’s crude imports transit the Strait of Hormuz, alongside roughly
60% of LNG and almost all of its LPG. - The Indian Basket crude price has shown sharp month-on-month swings through
2025–26, forcing the government to absorb significant excise revenue losses to
keep retail fuel prices stable.
The Petroleum Ministry has since diversified, securing nearly 70% of crude imports outside
the Strait of Hormuz, but the structural vulnerability remains.
In this environment, every percentage point of ethanol blended into petrol is a percentage
point of energy sovereignty.
2. The Economic Returns of Ethanol Are Now Proven
India’s ethanol programme has already delivered measurable economic outcomes:
- Over ₹1.25 lakh crore in payments to farmers through ethanol procurement
- Over ₹1.44 lakh crore saved in foreign exchange through reduced crude imports
- Ethanol blending climbed from roughly 1.5% in 2014 to 14.6% in 2023–24 and
crossed 20% in April 2026
These are not marginal gains. They represent one of the most successful agri-industrial
pivots in India’s modern energy history. The case for going further is now financial, not just
environmental.
3.The Environmental Math Is Compelling
Ethanol is not a perfect fuel, but on a lifecycle basis it offers meaningful emissions
reductions compared to petrol – and the benefits multiply when the feedstock is agricultural
waste rather than food crops.
According to Khaitan Bio Energy’s own technology benchmarks, every kilogram of 2G
ethanol used as fuel reduces approximately a kilogram of carbon dioxide
accumulating in the atmosphere.
Add the avoided emissions from eliminating open-field stubble burning – a major contributor
to North India’s winter air pollution crisis – and the climate case for advanced ethanol
becomes one of the strongest in India’s clean-energy toolkit.
The E25 Roadmap: What the BIS Notification Actually Means
The May 15, 2026 BIS notification – IS 19850:2026 – established formal technical
specifications for E22, E25, E27, and E30 fuel blends for use in positive-ignition (petrol)
engine vehicles.
It is important to understand what this does and does not do:
- It does not immediately mandate the nationwide sale of E25 or higher blends.
- It does create the regulatory and technical foundation that automakers, oil marketing
companies, and infrastructure providers need to plan investments. - It signals that the government is preparing for a phased rollout – likely beginning with
E25 – once vehicle compatibility and infrastructure readiness are established.
Officials have indicated that moving from E20 to E22 is technically straightforward. The
jump from E20 to E25, however, is described as a “significant” step, requiring engine
testing, fuel system compatibility validation, and dispensing infrastructure upgrades.
The All India Distillers’ Association has welcomed the notification, noting that E25 will help
absorb surplus production capacity and create stable, long-term demand for the sector.
The Supply Problem: Why 1G Ethanol Alone Cannot Get India
to E25
On the surface, India appears to have plenty of ethanol. The country’s installed ethanol
production capacity has scaled to roughly 2,000 crore litres (20 billion litres) per year, with
an additional 400 crore litres expected to come online by FY27.
Against this, the E20 demand requirement is around 1,050 crore litres. So the immediate
question becomes: if capacity already exceeds E20 demand, why is 2G ethanol urgent?
The answer is in the trajectory, not the snapshot.
The Demand Curve Is Steepening
According to industry estimates, ethanol demand is expected to rise to:
~1,200 crore litres by ESY 2026–27 (under E20 plus initial higher-blend rollout)
~1,600 crore litres by ESY 2029–30 (with E25 and growing FFV adoption)
15–25 billion litres of additional dependable capacity required if E85 and E100
flex-fuel pathways are pursued at scale
That last figure – sourced from bioenergy industry analysis – implies fresh investments of
₹1.5–2 lakh crore, with 2G plants representing a significant share given their higher capital
intensity.
The Feedstock Ceiling on 1G Ethanol
First-generation (1G) ethanol in India comes from three main sources:
| Feedstock | Approx. share of 1G | Key constraint |
| Sugarcane molasses & juice | ~45% | Water-intensive; competes with sugar production; vulnerable to monsoon variability |
| Maize | ~30% | Competes with poultry feed; price-sensitive |
| Broken / surplus rice (FCI) | ~20% | Limited by FCI stock levels and food security policy |
| Damaged grain & others | ~5% | Limited volumes |
Each of these feedstocks has a natural ceiling. India has already had to restrict sugar and
broken rice diversion to ethanol during low-production years to protect food prices. The
2024 ethanol year saw blending dip toward 11.5% due to feedstock shortages – a reminder
that 1G ethanol is exposed to the same agricultural risks the policy is meant to insulate India
from.
In short: the more India relies on food-based ethanol, the more it imports an
agricultural vulnerability in place of an oil vulnerability.
This is the structural reason E25 – and certainly anything beyond it – cannot be built on a 1G
foundation alone.
Why 2G Ethanol Is the Bridge to E25 and Beyond
Second-generation ethanol is produced from non-food lignocellulosic biomass – primarily
agricultural residues that today are either burned in the open or used for low-value
applications.
The feedstock pool is vast:
- Rice straw (paddy straw): ~160–180 million tonnes generated annually in India,
with a significant share burned in fields - Wheat straw: another major residue stream, particularly in northern states
- Sugarcane bagasse: currently used primarily for boiler fuel in sugar mills
- Corn stover, cotton stalks, and other crop residues: largely uncommercialised
Unlike 1G ethanol, 2G ethanol offers a combination of advantages that align directly with
India’s energy and climate objectives:
- It does not compete with food crops. The feedstock is waste, not food.
- It directly addresses stubble burning – one of the largest preventable
environmental harms in northern India. - It produces deeper lifecycle emissions reductions than 1G ethanol because the
feedstock would otherwise have decomposed or burned. - It enables a circular bio-economy, where co-products like silica, lignin derivatives,
and bio-gypsum create additional revenue streams from the same biomass. - It is feedstock-resilient – agricultural residues are produced regardless of whether
sugar or grain markets are tight.
For an energy strategy looking to scale from E20 to E25 to potentially E85 or E100 over the
next decade, the question is no longer whether 2G is needed. It is how fast it can be built.
Government Policy: From PM JI-VAN to the Next Wave
India’s policy framework for 2G ethanol has been steadily building:
- PM JI-VAN Yojana – the flagship scheme to support commercial 2G ethanol
biorefineries using lignocellulosic feedstocks - National Policy on Biofuels (2018, amended 2022) – recognises 2G ethanol as an
“advanced biofuel” with higher pricing support - Long-Term Offtake Agreements (LTOAs) between oil marketing companies and
dedicated ethanol plants, providing pricing and demand stability - Interest subvention schemes for distillery construction, including grain and
lignocellulosic plants - BPCL’s commercial 2G refinery in Bargarh, Odisha, commissioned in March
2026, processing rice straw into approximately 100 kilolitres of ethanol per day – a
proof point that 2G technology has moved from pilot to commercial reality
The Global Biofuel Alliance, launched under India’s G20 presidency, further positions the
country as a leader in advanced biofuels diplomacy, opening doors to technology
partnerships and export markets.
What the sector now needs is the next layer of clarity: defined blending targets beyond E20,
transparent pricing for 2G ethanol that reflects its higher capital intensity, and accelerated
land and biomass aggregation policies.
Challenges That Must Be Addressed
The path from E20 to E25 – and onward – is not frictionless. Five challenges stand out
- Vehicle compatibility. Existing E10/E20 vehicles will need ARAI-validated testing
for E25 compatibility. Beyond E25, dedicated flex-fuel vehicles become essential. - Fuel infrastructure. Higher ethanol blends require corrosion-resistant storage
tanks, dedicated dispensing units, and upgraded blending terminals across
thousands of fuel stations. - Capital intensity of 2G plants. A 2G ethanol plant typically costs significantly
more per kilolitre of installed capacity than a 1G plant, requiring stronger policy
support and risk-sharing. - Biomass logistics. Rice straw is bulky, seasonal, and dispersed. Building reliable
supply chains from farm to biorefinery is operationally complex. - Capacity utilisation of existing 2G plants. Earlier 2G installations in India have
struggled to operate at design capacity, underlining the need for proven, scalable
technology platforms.
These are real challenges. They are also solvable – and several are already being
addressed.
Where Khaitan Bio Energy Fits In
India’s ethanol roadmap from E20 to E25 to E85 will not be delivered by policy alone. It will
require technology platforms that can convert vast quantities of agricultural residue into
ethanol economically, reliably, and at scale.
This is precisely the gap that Khaitan Bio Energy has been built to address.
The company’s patented 2G ethanol technology – developed over many years by Mr Rohit
Khaitan and validated through a BIRAC-supported pilot under the “Cellulosic Ethanol Pilot
Plant for Rice Straw Management” project – establishes an economically viable
cellulose-to-sugars-to-ethanol pathway. The technology has been certified at Technology
Readiness Level 8 (TRL-8) by the Department of Biotechnology, Government of India,
indicating commercial deployment readiness, and has been evaluated by the Centre for High
Technology under the Ministry of Petroleum and Natural Gas.
It has also been selected for setting up commercial biorefineries under the PM JI-VAN
Yojana.
What distinguishes the approach is the comprehensive utilisation of every component of
lignocellulosic biomass – producing not only 2G ethanol, but also high-purity precipitated
silica and gypsum as co-products. This breakthrough in lignin valorisation transforms the unit
economics of 2G ethanol, addressing one of the longest-standing challenges in
commercial-scale cellulosic ethanol production.
For an India targeting E25 and beyond, technology pathways that solve the rice straw
problem while producing low-carbon transportation fuel and industrial co-products are
exactly the kind of innovation the country’s energy transition will rely on.
The Road Ahead
The notification of BIS standards for E22 through E30, the ARAI study on E25, the BPCL
Bargarh commissioning, and the continuing volatility in global crude markets are not isolated
developments. Together, they describe a sector approaching a turning point.
India’s ethanol story has so far been driven by sugar mills, grain distilleries, and policy
ambition. The next chapter will be written by biomass, bio-refineries, and breakthrough
technology.
The shift from E20 to E25 may sound like a small numerical step. In reality, it marks the
moment when India’s ethanol programme outgrows its first-generation foundations and
becomes structurally dependent on second-generation pathways.
For policymakers, the work is to define the next set of blending targets with clarity and
provide the pricing and offtake certainty that 2G investments require. For industry, the work
is to scale proven technologies fast enough to meet a demand curve that is now rising
steeply.
For India, the prize is significant: lower oil imports, cleaner air in farming states, higher rural
incomes, and a transport sector aligned with net-zero ambitions.
E25 is not just a higher number on the petrol pump. It is the point at which India’s
energy transition truly begins to compound. Development under the PM JI-VAN Yojana –
directly aligning with India’s need to scale 2G ethanol for higher blending targets.