E20 Ethanol Blended Petrol: Benefits and Impact on Fuel Economy
Understanding E20 Ethanol Blended Petrol
File image of Union Minister Nitin Gadkari (Photo: X)
New Delhi, July 11: According to the oil ministry, petrol mixed with 20% ethanol (E20) may lead to a decrease in fuel efficiency by 3-5% in certain vehicles. However, the ministry argues that the advantages, such as enhanced octane ratings, improved anti-knock properties, quicker combustion, better acceleration, cleaner engine performance, and reduced lifecycle carbon emissions, outweigh this drawback.
In a comprehensive Q&A released to address criticisms of the Ethanol Blended Petrol Programme, the Ministry of Petroleum and Natural Gas emphasized that E20 is a “cleaner, higher-quality, and more efficient fuel” compared to E10 or regular petrol. The rollout of E20 followed extensive scientific research, consultations with car manufacturers, and the growth of domestic ethanol production.
The ministry dismissed claims that the initiative was rushed, noting that India’s ethanol blending efforts began with pilot projects in 2001, and a 5% blend was introduced in certain regions by 2006.
Although blending levels remained around 1.5% until 2014, the government accelerated production following the introduction of the National Policy on Biofuels in 2018, which expanded feedstocks beyond just sugarcane.
By 2022, India achieved a 10% ethanol blending rate ahead of schedule, and the ministry anticipates reaching 20% blending during the 2025-26 ethanol supply year, thanks to investments in dedicated ethanol facilities, storage, and logistics.
Regarding older vehicles, the ministry assured that E20 underwent rigorous testing for engine durability, fuel system compatibility, corrosion resistance, drivability, and emissions prior to its nationwide launch.
Feedback from automobile manufacturers, including Maruti Suzuki and Hero MotoCorp, indicated no reports of corrosion, unusual wear, or damage to components in vehicles using E20 under real-world conditions.
The ministry also rejected calls for petrol stations to provide various fuel grades, such as pure petrol, E10, and E20, stating that maintaining separate supply chains would raise logistics costs and complicate distribution across India’s extensive network of over 100,000 retail outlets.
On the topic of pricing, the ministry clarified that E20 is not necessarily cheaper than traditional petrol, as ethanol procurement prices are set at levels that support farmers and can sometimes exceed petrol costs when international crude prices are low.
The primary goal of the programme is to lessen India’s reliance on imported crude oil, enhance price stability, and bolster energy security, rather than simply reducing fuel prices at the pump.
Since the 2014-15 ethanol supply year, the ethanol blending initiative has reportedly saved over Rs 1.97 lakh crore in foreign exchange, displaced nearly 316 lakh tonnes of crude oil imports, cut down approximately 952 lakh tonnes of carbon dioxide emissions, and transferred more than Rs 1.66 lakh crore to farmers.
The ministry urged consumers to disregard misinformation regarding E20, asserting that the fuel has been validated by vehicle manufacturers, testing agencies, oil marketing firms, and regulators prior to its nationwide implementation.