Take a litre of E20 at a Delhi pump. It costs about Rs 102. Eighty percent of it is petrol, crude from West Asia, refined at Mathura or Panipat, piped to the terminal. That part is well understood. The other twenty percent (the ethanol) took a very different path.
That path runs through sugarcane fields in Uttar Pradesh, maize mandis in Madhya Pradesh, FCI rice godowns in Chhattisgarh, molasses tanks at sugar mills in Maharashtra, grain-based distilleries in Karnataka, oil company depots across the country, and finally into your fuel tank. It involves administered prices at every step, guaranteed margins for some participants, invisible costs for others, and a distributional split that is far more complicated than "farmer gets paid, country saves forex."
Understanding the ethanol supply chain is not an academic exercise. It is the prerequisite for judging whether the programme is working, for whom, and at what cost. The five-step value chain from field to fuel pump is where the policy's claims meet physical and financial reality.
Five stops before the tank
India's ethanol supply chain has five distinct stages: the farmer grows the feedstock; a mill or aggregator processes or channels it; a distillery converts it to ethanol; an oil marketing company blends it with petrol at its depot; and a retail outlet sells the blended fuel to the consumer. Each stage has its own economics, its own incentives, and its own relationship with the administered prices the government sets.
The first thing to notice about this chain is that nothing in it is market-determined. The farmer sells at a Fair and Remunerative Price (for cane) or a Minimum Support Price (for grain) set by the government. The distiller sells at an administered ethanol price set by the government, differentiated by feedstock. The OMC buys under annual tenders at those administered prices. The consumer pays a retail fuel price that is regulated or semi-regulated. At every link, the hand of the state sets the terms.
This is not inherently problematic. Many strategic industries operate under administered pricing. But it means that the supply chain's profitability, efficiency, and fairness are determined by policy choices, not by competitive markets. And the choices the government has made produce a particular distributional outcome.
One number gets quoted, the other does not
When the government talks about the ethanol programme, it leads with one number: Rs 1.60 lakh crore paid to farmers since 2014-15. The number is real. It represents cash flowing to millions of sugarcane and grain farmers across Uttar Pradesh, Maharashtra, Karnataka, Madhya Pradesh, and other producing states. This is genuinely broad-based income support, and it is the programme's most powerful political argument.
There is a second number that appears less often in official communications: Rs 1.45 lakh crore in revenue to distillers between 2014 and August 2024. This money flows to fewer than 500 distillery units, many affiliated with sugar-industry families that have significant political connections. The distillers operate on guaranteed prices, a guaranteed buyer (the OMC must procure), and capital that was subsidised through the interest subvention scheme.
Which of these two numbers stands in for the whole programme depends on who is doing the telling. But the structural difference matters. The farmer payment is diffuse: millions of small recipients, each receiving an incremental amount from crop sales. The distiller payment is concentrated: a small number of industrial units capturing large revenue streams with guaranteed margins.
For sugarcane farmers, the connection to ethanol is indirect. The farmer sells cane to a sugar mill under administered FRP or the state-level SAP. In this chain, ethanol money stops one link short of the cane farmer. It reaches the mill, which has an obligation to pay cane arrears. If the mill sends B-heavy molasses or sugarcane juice to ethanol rather than sugar, the higher administered ethanol price gives it more room to clear those farmer payments. In theory, ethanol improves cane-payment compliance. In practice, cane arrears in UP and Maharashtra are a perennial problem that predates the ethanol programme, persists alongside it, and is driven by state-level political dynamics as much as mill economics.
For grain farmers, the connection is through demand support. A maize farmer in Madhya Pradesh sells at the mandi, typically near MSP. Whether the grain becomes ethanol, chicken feed, or starch is immaterial to the farmer's income at the point of sale. But ethanol creates a floor buyer that supports mandi prices. Maize prices moved from roughly Rs 15,000 per tonne in 2022 to about Rs 25,000 by 2024, driven partly by ethanol demand. That price movement also squeezed the poultry industry, which consumes 24.2 million tonnes of Indian corn annually. The farmer's gain is, in part, the poultry farmer's loss on feed costs.
For FCI rice, the farmer connection is weakest. The farmer sold paddy at MSP during procurement season, months or years before the rice was released to a distiller at Rs 22 to 23 per kilogram. At the margin, the programme adds nothing to the rice farmer's income. That procurement would have happened with or without a distillery at the other end of the chain.
The Rs 66 nobody puts on the sticker
India's ethanol programme began as a waste story. C-heavy molasses (the thick residue left after sugar extraction) had limited commercial use and plenty of volume. Fermenting it into fuel was, in the original telling, elegant: a byproduct of an existing industry becoming a strategic asset. Cheap feedstock, no food competition.
The waste story stopped holding around 2022. The programme hit the ceiling of what molasses alone could supply, and grain arrived to fill the gap. Of the roughly 1,810 crore litres of distillation capacity now installed, 858 crore litres runs on grain and 816 crore litres on molasses. Supply in the current ethanol supply year splits about 480 crore litres from grain against roughly 238 crore from cane. Close to two-thirds of the programme now runs on the harvest, not on leftovers.
Swapping the feedstock is not a small change to the chain. Grain ethanol and sugar ethanol are separate industries. The economics differ, and so do the water footprints, the political constituencies, and the ways each one fails.
CEEW's true-cost analysis for ESY 2024-25 puts each feedstock route side by side, and the differences are large:
| Feedstock | OMC price (Rs/L) | True cost (Rs/L) | Hidden gap (Rs/L) | Yield per tonne |
|---|---|---|---|---|
| C-heavy molasses | 57.61 | ~60 | ~2 | 220-225 litres |
| B-heavy molasses | 65.35 | 71.7 | ~6 | 280-300 litres |
| Sugarcane juice | 70.31 | 85.5 | ~15 | 70-75 litres |
| Maize | 71.86 | ~95 | ~23 | 380-460 litres |
| FCI rice | ~60 | ~126 | ~66 | 450-480 litres |
The "hidden gap" column is what matters. For every litre of ethanol from FCI rice, the country pays Rs 66 more than the sticker price suggests. That gap is funded by the public exchequer, scattered across four ministries (petroleum, food, fertiliser, and finance) so no single budget document captures the total cost. That opacity is built into how the chain is funded, not an oversight.
The FCI rice route is the most contested feedstock path. The Food Corporation's average acquisition cost for rice is Rs 37.20 to Rs 38.89 per kilogram. Surplus stock then moves to distillers under the open market sale scheme at Rs 22.50 to Rs 23.20 per kilogram, approximately 40% below acquisition cost. Over the thirteen months to June 2026, that channel pushed 6.35 million tonnes into ethanol at a disclosed fiscal cost of Rs 14,597 crore. The government's defence is that only surplus rice above buffer norms is diverted. Ashok Gulati of ICRIER calls it "the most irrational policy that the government has. It's a waste of money."
Moving the chain onto grain has moved it up a cost curve. C-heavy molasses ethanol is cheap and circular. FCI rice ethanol is expensive and indefensible by almost any cost metric. Maize sits between them, viable if yields improve, problematic if they don't.
Capacity ran ahead of demand
The conversion step of the chain now sits in 499 distilleries holding about 1,822 crore litres of combined capacity. Two broad models run inside that total.
Model one is integrated sugar-ethanol. The distillery sits on the same site as the sugar mill and takes the mill's own molasses or juice as feedstock. Ethanol income sits on top of sugar income, steadies the mill's cash flow, and helps it clear cane payments. Balrampur Chini Mills, Triveni Engineering, Dhampur Sugar Mills, Shree Renuka Sugars, and EID Parry are the main listed names here. Their margins on ethanol are publicly visible in segment reporting.
An integrated mill's arithmetic is simple. Molasses is a byproduct, so the incremental cost of producing ethanol is primarily conversion: energy, enzymes, labour, and compliance. When the administered ethanol price exceeds conversion cost, the margin is guaranteed. On C-heavy molasses that margin is comfortable. For B-heavy molasses, it depends on the sugar-ethanol price arbitrage, because forgoing sugar to make ethanol is profitable only when the ethanol price exceeds the opportunity cost of the sugar that could have been crystallised.
The second model is the standalone grain-based distillery, built largely in the last three to four years, often by new entrants attracted by a specific instrument: the interest subvention scheme run by the Department of Food and Public Distribution.
The scheme required the distillery to commit at least 75% of its ethanol from the added capacity to OMCs for blending. It de-risked the initial investment but did not guarantee demand in perpetuity. This distinction matters.
A grain-based distillery's margin depends on the spread between feedstock procurement cost (maize at mandi prices, FCI rice at the administered open market sale price) and the administered ethanol price, minus conversion costs. The interest subvention on capital expenditure sweetened the return on equity enough to drive rapid capacity creation. But the broader buildout (to 1,822 crore litres against roughly 1,016 crore litres of demand at 20% blending) raises a question that is easier to ask than to answer: is the industry now overbuilt?
What happens when fuel bids against feed?
Maize going into ethanol rose from about one million tonnes to over six million between 2022 and 2024. Over those same years, maize exports slid from 1.9 million tonnes to 0.5 million. Imports reached 0.9 million tonnes. The country flipped to a net corn importer for the first time in two decades. Across 2020 to 2024, corn exports fell 86%.
Annual maize output in India runs about 36 to 38 million tonnes. Put a new buyer at the front of the chain that takes six million tonnes in two years, roughly 15 to 17% of the total crop, with no matching rise in supply, and prices move. They moved from roughly Rs 15,000 per tonne to about Rs 25,000.
The adjustment is not gentle, and it is not contained to the grain market. Corn is primarily animal feed in India, not a direct human food crop. Poultry took about 24.2 million tonnes in 2025, and feed is 60 to 70% of that industry's production cost. When maize prices rise 67% in two years, the transmission runs through feed mills, hatcheries, and retail mandis to a household buying eggs on a Tuesday morning.
Follow the chain far enough and a fuel policy has quietly turned into an egg-price policy.
A paper from the Observer Research Foundation, titled "India's Self-Goal," puts the irony plainly. The case for the programme rests on cutting import dependence, with domestic ethanol standing in for imported crude oil and saving foreign exchange. Once the chain scaled on grain, though, India started importing the grain, and at times the ethanol too. Ethanol imports in 2024 came to roughly 600 million litres, about 50% above the prior year. Every tonne of imported maize or litre of imported ethanol leaks foreign exchange back out. Blending has saved about Rs 1.90 lakh crore in foreign exchange on a gross, cumulative basis. Net of what the chain spends on imported feedstock and imported ethanol, the saving is smaller. The net figure is one the government does not publish.
The Economic Survey 2026 acknowledged the tension in its own words. One passage, which drew less notice than it warranted, has the Finance Ministry's annual survey recording maize output growing 8.77% a year between FY22 and FY25, pulses output and acreage falling, and oilseed acreage creeping up only 1.7% annually. The survey named the problem directly: "an emerging tension between self-reliance in energy and self-reliance in food."
When the Finance Ministry's own document identifies a structural conflict between two flagship policy objectives, the political space for treating the critique as opposition noise has closed.
The poultry industry (India's third-largest egg producer, fifth-largest poultry meat producer, employer of roughly five million people) has no policy voice proportional to its size. Sugar has dedicated ministries behind it, state-level cooperatives with political clout, administered prices, and a long record of organised lobbying. Poultry runs on scattered private firms working thin margins with little political access. So when maize is contested between ethanol distillers holding a government mandate and poultry feed-millers holding only market demand, the policy machinery leans toward ethanol. This is not corruption. A programme with dedicated institutional support simply outweighs an industry that competes in the market without any.
Four revenue lines, not one
One part of the supply chain that receives almost no attention is the secondary revenue that distilleries earn from by-products. These streams materially change the unit economics of ethanol production, and they partly address one of the programme's critics' concerns.
Every litre of grain ethanol also yields roughly 300 to 350 grams of DDGS (dried distillers' grains with solubles). Across 480 crore litres of grain ethanol per year, that works out to roughly 1.4 to 1.7 million tonnes of protein-rich animal feed. At Rs 18 to 22 per kilogram, DDGS brings the distillery sector Rs 2,500 to 3,700 crore. This partially offsets the poultry industry's complaint about maize diversion, because some of the diverted maize returns to the feed chain as DDGS, though in a different form and at a different price.
Fermentation also throws off carbon dioxide, which is captured and sold into the beverage and food-processing industries. At scale, the CO2 from India's roughly 1,016 crore litres of total ethanol production is significant, approximately 1.8 to 2 million tonnes per year.
On the molasses side, the residue is spent wash, which can be worked into potash-rich fertiliser or biogas. Treating spent wash is an environmental compliance requirement anyway, so that by-product revenue is partly a cost offset rather than pure profit.
Counted together, these streams make the distillery's total economics better than the ethanol margin alone suggests. Four income lines can run through a well-run unit: ethanol, DDGS, CO2, and potentially biogas. That combined margin is what pulled in the rapid capacity build. It is also what makes the stranded-asset question less dramatic than the headline numbers imply. A distillery that loses part of its ethanol market can still generate revenue from animal feed and industrial gases, though not enough to fully service its debt.
Petrol demand peaks around 2032. The distilleries do not.
This is the part of the supply chain analysis that most official accounts skip. It requires looking forward rather than backwards, and the forward view is uncomfortable.
On CEEW's projection, Indian petrol demand peaks around 2032 at approximately 5,700 crore litres, then falls toward 3,700 crore litres by 2050 as electric vehicles scale. The trajectory is driven by forces now operating globally: EV costs falling, battery technology improving, charging infrastructure expanding, and Indian automakers investing heavily in electric models.
Blend 20% into that peak and the chain needs about 1,140 crore litres of ethanol at most. India already has 1,822 crore litres of installed capacity. The programme is capacity-surplus at its own ceiling.
Once petrol demand starts falling after 2032, the ethanol market falls with it in a straight line. With petrol at 3,700 crore litres in 2050, a 20% blend calls for just 740 crore litres of ethanol. About 1,080 crore litres of current capacity, more than half the installed base, would be surplus.
Take a distillery built in 2023 on a 20-year loan. Its plan runs profitably until at least 2043. If petrol demand peaks in 2032 and declines thereafter, the distillery faces a shrinking market roughly ten years into its loan tenure. If the decline is sharp, driven by faster-than-expected EV adoption, the distillery may be unable to service its debt.
Who bears the loss? The operating loss sits with the distillery owner. The credit loss sits with the lending bank. Where that bank is a public sector institution, the loss ends up with the taxpayer through recapitalisation or write-off. The interest subvention scheme de-risked the initial investment. It did not de-risk the demand trajectory. The government paid to create capacity and never promised demand in perpetuity.
Going to E30 or higher does not solve this problem; it changes the timing. At peak demand, E30 would call for about 1,710 crore litres, closer to current capacity. The peak and the decline still happen. Ethanol demand keeps growing indefinitely only if petrol demand does not decline, and that requires EVs to fail to scale. Staking the chain's future on EV failure means betting against the direction of the global auto industry, against Indian policy itself (the FAME scheme, EV subsidies, the NITI Aayog EV roadmap), and against observable market trends.
There are two possible mitigants, and neither is certain. Higher blending mandates (E30, E85, flex-fuel) would expand the market, but flex-fuel vehicles require parallel retail infrastructure and carry their own energy-density penalties. At current crude prices, a consumer with a flex-fuel vehicle would rationally choose petrol over ethanol at every fill. Alternative uses (chemical feedstock, sustainable aviation fuel, potable alcohol) exist but are not large enough to absorb 800-plus crore litres of surplus capacity.
None of this is imminent. In 2026 petrol demand is still growing. But any distillery commissioning today and planning to run profitably until 2050 is assuming a pace of electrification that may not hold. Should it not hold, the stranded-asset risk lands partly on the distillery owner and partly on the public sector banks that lent against government-backed interest subvention.
Who speaks for the motorist?
There is a third participant in the ethanol value chain who appears in none of the government's promotional material: the consumer.
At the end of the chain, Rs 102 buys a litre of fuel that carries 6.7% less energy than the petrol it replaced. Nothing about the ethanol inside it is visible at the pump: not the share, not the feedstock, not the true cost, and there is no way to opt out. Going ethanol-free means buying premium petrol at about Rs 160 per litre. Premium fuel sales had more than doubled by July 2026, a revealed preference that speaks louder than any survey.
The Reporters' Collective calculated that E20 blending imposed an additional Rs 88,234 crore in fuel expenditure on Indian motorists over three fiscal years, primarily through the mileage penalty. This cost falls disproportionately on old-vehicle owners, gig workers, and two-wheeler commuters, precisely the groups least able to absorb it and least able to switch to electric vehicles or premium fuel.
No organised constituency represents the motorist in this policy conversation. No lobby, no line item on any budget. The Rs 88,234 crore is borne by individuals too dispersed to aggregate their grievance into policy influence.
The chain works. Working well is a different test.
Traced end to end, the ethanol value chain looks like this: the farmer sells a crop and is paid at MSP or FRP. The distiller turns that crop into ethanol at a guaranteed price, using subsidised capital. The OMC does the blending and the distribution. The consumer pays the same and gets less. The gap between true cost and sticker price is absorbed by the exchequer across four ministries.
Every participant acts rationally given the incentives. Farmers grow whatever pays. Distillers build wherever the subsidy points. OMCs blend to whatever the mandate says. Consumers get no say.
The programme transfers value from a large, diffuse, lower-income group (motorists) and from the public exchequer to two beneficiaries (broadly to farmers, concentratedly to distillers) via an administered pricing mechanism that guarantees margins, ensures buyers, and subsidises capital.
Whether this is good policy depends on two questions. First, whether the insurance value and rural income justify the cost. That is a judgment call, and reasonable people can disagree. Second, whether the cost is being honestly stated. That is a transparency question with a clear answer: it is not. No single government document captures the total public cost of the ethanol programme. The subsidy is scattered across petroleum, food, fertiliser, and finance ministries. The consumer mileage cost appears in no official accounting. Read against that, CEEW's recommendation to publish a consolidated annual cost report is a governance fix as much as an analytical one.
The supply chain works. It converts policy intent into physical fuel in the tank. But a supply chain that works is not the same as a supply chain that works well, works transparently, or works sustainably. The difference between those adjectives is where the real policy conversation should start.