In a significant policy step aimed at reducing crude oil dependence and lowering emissions, the Centre has directed oil marketing companies to sell petrol blended with up to 20 percent ethanol across the country starting April 1. The fuel must meet Bureau of Indian Standards specifications and carry a minimum Research Octane Number (RON) of 95, according to a notification issued by the Ministry of Petroleum and Natural Gas on February 17.

The directive formalises India’s transition toward E20 fuel petrol containing 20 percent ethanol as the new national standard. RON measures a fuel’s resistance to engine knocking, a condition caused by premature combustion inside the engine that can reduce performance and cause long-term damage. By mandating a higher octane level, the government aims to ensure that the blended fuel remains compatible with modern engines and does not compromise efficiency.

The policy also provides flexibility. In special circumstances, authorities may permit oil marketing companies to supply ethanol-blended petrol that only meets the required RON specifications for specific regions or time periods. This clause suggests that supply logistics, blending infrastructure, or regional availability of ethanol could influence rollout timelines.

Ethanol used for blending is primarily produced from sugarcane, maize, and other grains. As a renewable and domestically sourced fuel component, it burns cleaner than conventional petrol and can reduce tailpipe emissions. The government’s ethanol programme has dual objectives: lowering the country’s heavy reliance on imported crude oil and creating a stable demand base for agricultural produce.

India imports a substantial portion of its crude requirements, making the economy vulnerable to global price shocks and geopolitical disruptions. By replacing a portion of petrol with domestically produced ethanol, policymakers aim to contain import bills and improve energy security. The move also aligns with broader climate commitments to reduce carbon intensity.

The agricultural implications are equally significant. Ethanol production has emerged as a new revenue channel for sugar mills and grain producers. Higher blending targets translate into sustained demand for feedstock such as sugarcane and maize, supporting rural incomes and helping absorb surplus production that might otherwise depress prices.

From a consumer standpoint, the transition appears manageable. Industry officials indicate that most vehicles manufactured in India between 2023 and 2025 are already designed to operate on E20 fuel without major issues. Automakers have progressively adapted engine designs, fuel systems, and materials to accommodate higher ethanol content.

However, older vehicles may experience efficiency variations, as ethanol has lower energy density than petrol. This could lead to marginally lower mileage in some cases, although higher octane levels may offset performance losses in newer engines.

For oil marketing companies, the mandate implies expanded blending operations, storage upgrades, and supply chain adjustments. Ensuring uniform availability of E20 fuel nationwide will require coordination across refineries, depots, and retail outlets.