India Weighs Curbing Cane-to-Ethanol Diversion to Cool Record Sugar Prices
With Maharashtra and Karnataka reeling from poor monsoon rains and domestic sugar prices at all-time highs, New Delhi is weighing a pivot that would redirect cane away from ethanol and back into the food supply chain.
The short answer
India is actively considering restricting sugarcane-based ethanol production from the October season onwards to shore up domestic sugar supplies and rein in record-high prices, according to government and industry sources cited by Reuters. The move could recoup roughly 3 million metric tons of sugar that mills currently divert to ethanol each year. A final decision is expected before the end of September, with corn and rice earmarked to plug the resulting gap in the country's 20% ethanol-blending programme.
The pressure point
Record Prices Force a Policy Rethink
Indian sugar prices have surged approximately 10% in a single month, reaching an all-time high, and are forecast to stay elevated for at least the next three months, according to Reuters. The catalyst is a combination of tightening supplies and robust festive-season demand — a period when consumer travel and food consumption traditionally spike.
Below-normal rainfall across Maharashtra and Karnataka, the two states that anchor India's sugarcane belt, has already raised alarm among planners about output in the season beginning October. New Delhi has responded with a sequence of demand-side interventions: sugar exports have been banned outright, and last month the government capped the stocks that dealers are permitted to hold. The latest measure under deliberation — redirecting cane away from ethanol — would be the most structurally significant step yet.
The 3-million-ton question
What Curbing Ethanol Diversion Could Unlock
During the current sugar year ending September, mills diverted roughly 3 million metric tons of sugar — around 10% of total output — into ethanol manufacturing. Restricting that diversion in the next season could add a broadly equivalent volume back into domestic supplies, potentially offsetting the production decline expected from drought-hit growing regions, government and industry sources told Reuters.
Under the plan being deliberated, mills would be directed to halt ethanol production from sugarcane juice and B-heavy molasses — a byproduct that retains a relatively high residual sugar content. Production would instead be confined to C-heavy molasses, the low-sugar residue left after maximum extraction. This tiered approach is designed to extract as much marketable sugar as possible before any fermentation feedstock is released.
Blending targets at stake
Corn and Rice to Step In for the Ethanol Shortfall
Maintaining India's 20% ethanol-blending mandate for petrol while simultaneously pulling back cane-based feedstock will require a rapid scaling-up of grain-based ethanol. Government and industry sources indicate that corn and rice are the primary candidates, and that current stocks of both commodities are described as ample.
The ethanol allocation for the sugar industry covering the marketing year beginning November is expected to be locked in before the season commences. Once that figure is confirmed, state-owned fuel retailers will float procurement tenders — a process that will signal to traders and processors exactly how much grain-based capacity needs to be mobilised. The sequencing matters: mills need visibility on their ethanol quotas before crushing decisions are finalised.
Industry read
Mills Unlikely to Resist — Sugar Economics Now Favour Food Over Fuel
Despite the apparent constraint on a diversified revenue stream, industry officials suggest the proposed curbs are unlikely to materially damage mill economics. The reasoning is straightforward: with sugar prices at record highs, mills are expected to earn more from selling sugar directly than from converting cane into ethanol at regulated prices.
The ethanol allocation for the coming season is slated to be finalised before crushing begins, giving mills the forward clarity they need to plan operations. Sources with direct knowledge of the deliberations told Reuters that a formal decision on the restrictions could come before the end of September — leaving a narrow but workable window for the industry and fuel retailers to adjust procurement and blending strategies ahead of the October season start.
Why it matters
The proposed curbs reveal the difficult trade-off New Delhi faces between its ambitious biofuel blending targets and food-price stability — a tension that will only sharpen as climate-driven yield shocks become more frequent in key cane-growing states. For sugar mills, the calculus may be straightforward: higher sugar realisations are expected to offset lost ethanol revenues. But commodity traders and fuel retailers should watch closely, since any formal restriction on cane-based ethanol will trigger government tenders for corn and rice as substitute feedstocks, reshaping demand dynamics across multiple agri-commodity markets simultaneously.
Frequently asked
- Why is India considering restricting sugarcane use for ethanol production?
- Reduced rainfall in Maharashtra and Karnataka — India's biggest cane-growing states — has raised fears about a drop in sugar output next season. With domestic sugar prices already at a record high after rising about 10% in a month, the government is exploring whether redirecting cane back into food supply chains could prevent a further price surge and avoid the need for sugar imports.
- How much sugar could be recovered if the ethanol diversion is curbed?
- Mills diverted approximately 3 million metric tons of sugar — around 10% of total annual output — to ethanol during the current season. Restricting that diversion next season could add a similar volume back into domestic supplies, according to government and industry sources cited by Reuters.
- Will curbing cane-based ethanol derail India's 20% blending target?
- Not necessarily. The government intends to compensate for the reduced cane-based feedstock by increasing the use of corn and rice for ethanol production. Both commodities are reported to have ample stocks, which should allow the 20% petrol-blending programme to stay on track.
- Which types of cane byproducts would mills be restricted from using for ethanol?
- Under the plan being considered, mills would be asked to stop producing ethanol from sugarcane juice and B-heavy molasses — a byproduct with a relatively high sugar content. They would still be permitted to produce ethanol from C-heavy molasses, the residue left after most of the sugar has already been extracted.
Source
This report summarises and analyses coverage from The Hindu BusinessLine — Agri Business. The analysis and India context are IndianAgri's own.