India reached 20% ethanol blending in petrol in 2025 — five years ahead of the original target — according to Uppal Shah writing in The Hindu BusinessLine. The milestone, the report said, has changed the strategic role of sugarcane and the assets built around it: the sugar mill is no longer judged only by how efficiently it converts sugarcane into sugar, but is increasingly becoming an integrated biorefinery that extracts value through food, fuel, energy and bio-based products.
Why this matters for mill economics
According to the article, a sugar mill's economics were traditionally defined by recovery, cane availability, sugar prices and production costs. That equation is changing. The next competitive advantage, the article said, may come from feedstock flexibility: since sugarcane is seasonal, ethanol plants designed to work with multiple feedstocks can operate more consistently by using sugar-based feedstocks alongside grains such as maize and broken rice.
Policy push for multi-feedstock distilleries
Government policy has explicitly supported the conversion of existing sugarcane-based distilleries into multi-feedstock facilities, the article reported, recognising the importance of improving asset utilisation and enabling year-round ethanol production. This changes the economics of the distillery. The question is no longer only how much ethanol a plant can produce, but how efficiently it can deploy capacity across different feedstock cycles. A dual-feedstock model, according to the article, provides greater flexibility in responding to feedstock availability, market conditions and operating requirements. It also reshapes procurement: instead of treating feedstock as a seasonal constraint, an integrated facility can think in terms of a portfolio of agricultural inputs, making feedstock strategy itself a competitive capability.
By-product streams and new value chains
Sugarcane does not end its economic journey when sugar is extracted, the article said. The following conversion pathways are identified in the report:
| Feedstock / by-product | End use |
|---|---|
| Molasses | Ethanol |
| Bagasse | Cogeneration and other energy applications |
| Press mud | Biogas / CBG feedstock |
| Distillery spent wash | Biogas / CBG feedstock |
| Waste CO₂ | Liquid CO₂ or solid dry ice |
Government data identifies press mud and spent wash as potential compressed biogas (CBG) feedstocks, and the first cooperative multi-feedstock CBG plant in a sugar-mill ecosystem was inaugurated in Maharashtra in 2025, the article reported. Beyond conventional biofuels, products such as Potash Derived from Molasses (PDM) and Polylactic Acid (PLA) open additional pathways for value creation, while modern integrated sugar mills can capture waste CO₂, purify it, and convert it into liquid CO₂ or solid dry ice.
SAF blending targets on the horizon
Emerging pathways such as Sustainable Aviation Fuel (SAF) could further expand this opportunity as technologies and markets develop, according to the article. India has set indicative SAF blending targets for international flights:
| Year | SAF blending target |
|---|---|
| 2027 | 1% |
| 2028 | 2% |
| 2030 | 5% |
Integration, not diversification, is the real opportunity
The report cautioned that not every mill should pursue every possible product. Biorefinery development requires capital, technology, reliable feedstock, logistics and viable markets, and adding multiple businesses without integrating their economics can increase complexity rather than create value.
The real opportunity lies in integration.
Energy generated from one process can support another, by-products can become feedstocks, different feedstocks can keep assets productive across seasons, and multiple outputs provide resilience when the economics of an individual commodity change, the article said. This is the fundamental shift from a sugar factory to a biorefinery: moving from a single-product mindset to an integrated resource-based model. On the production timeline, the 20% blending level was achieved in 2025, the Maharashtra CBG plant opened in 2025, and SAF blending obligations for international flights are set at 1 per cent in 2027, 2 per cent in 2028 and 5 per cent in 2030. For plant managers and procurement teams, the report implies that the economics of a sugar mill may increasingly need to be evaluated by the value it creates from the entire agricultural resource — not simply by the sugar it produces.
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