Union Minister Nitin Gadkari’s recent statement suggesting that ethanol-blended fuel could become a cheaper alternative to LPG in Indian kitchens has reignited discussions around clean cooking energy and indigenous fuel technology. Gadkari said that mixing 7% ethanol with water can produce a flame similar to a cooking stove and claimed the technology could offer a low-cost, homegrown substitute for traditional LPG cylinders. Ethanol stoves are modern cooking devices powered by biofuel derived from crops such as sugarcane and maize. Unlike LPG, which is a compressed hydrocarbon gas, ethanol is a liquid fuel that burns cleanly with minimal smoke, odor, or soot. Experts say ethanol-based cooking systems can provide a steady blue flame similar to LPG while also being more environmentally friendly.
However, scientific studies indicate that ethanol concentration plays a crucial role in combustion. Highly diluted ethanol mixtures struggle to maintain a stable flame because water reduces the formation of flammable vapors. Mixtures containing less than 7% ethanol generally fail to sustain combustion under normal conditions, which is why beverages with low alcohol content do not easily catch fire. Commercial ethanol stoves typically operate on fuel containing 70% to 90% ethanol or higher. At these concentrations, enough vapor is produced to ensure efficient and continuous burning. Pure ethanol has a flash point of around 13°C, allowing it to ignite relatively easily, but increasing water content lowers vapor pressure and absorbs heat, making ignition more difficult.
Experts believe Gadkari’s claim is scientifically feasible if higher ethanol concentrations are used along with specially designed burners that efficiently vaporize the fuel. While a simple 7% ethanol-water mixture may not directly produce a sustained flame, properly engineered ethanol stove technology could become a practical cooking solution. The economic viability of ethanol-based cooking will depend on fuel pricing, production scale, and distribution infrastructure. With India rapidly expanding its ethanol industry—especially through sugarcane-based ethanol and fuel blending programs—supporters argue that ethanol cooking fuel could reduce dependence on imported LPG and promote cleaner, locally produced energy alternatives.
