Context:
The government mandated supply of E20 fuel (20% ethanol blending) with a minimum 95 RON octane rating, aiming to reduce fossil fuel dependence.
Key Highlights:
Fuel Composition & Properties
- E20 = 20% ethanol + 80% petrol.
- Higher octane rating (95 RON) compared to regular petrol (91–92).
- Leads to smoother and cleaner combustion.
Source of Ethanol
- Derived from:
- Sugarcane
- Maize
- Grains
- Can also be produced from cellulosic biomass.
Government Policy Objective
- Reduce import dependence on crude oil.
- Promote renewable biofuels.
- Support farm income diversification.
Significance
- Reduces carbon emissions.
- Enhances energy security.
- Promotes circular economy in agriculture.
Relevant Prelims Points:
- Ethanol (C₂H₅OH)
- Renewable, biodegradable fuel.
- Mixed with petrol for blending.
- Octane Rating (RON)
- Indicates fuel’s anti-knocking ability.
- Biofuels
- Derived from biological sources.
Relevant Mains Points:
- Energy Security
- Reduces dependence on imported fossil fuels.
- Environmental Benefits
- Lower greenhouse gas emissions.
- Cleaner combustion reduces air pollution.
- Economic Impact
- Benefits farmers via ethanol production demand.
- Supports rural economy.
- Challenges
- Food vs fuel debate.
- Infrastructure and vehicle compatibility issues.
Way Forward
- Expand second-generation ethanol production.
- Ensure vehicle compatibility (flex-fuel engines).
- Balance food security and biofuel production.
- Strengthen supply chain infrastructure.
UPSC Relevance:
- GS Paper 3: Environment, Energy, Economy
- Prelims: Biofuels, ethanol blending policy