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Biofuels: Types, Policy, and India's Ethanol Blending
July 19, 20265 min read
Introduction
Biofuels are renewable fuels derived from organic materials (biomass) such as plants, agricultural residues, and animal waste. They offer a sustainable alternative to fossil fuels, reducing greenhouse gas emissions, enhancing energy security, and supporting rural livelihoods. India has emerged as a global leader in ethanol blending, achieving its E20 target ahead of schedule under the National Policy on Biofuels.
Types of Biofuels
Classification by Generation
| Generation | Feedstock | Examples | Status |
|---|---|---|---|
| 1st Gen | Food crops (sugarcane, corn, vegetable oil) | Ethanol, biodiesel | Commercial, but food-vs-fuel debate |
| 2nd Gen | Non-food biomass (agricultural waste, wood, municipal solid waste) | Cellulosic ethanol, bio-CNG | Emerging, technology-intensive |
| 3rd Gen | Algae, microorganisms | Algal biodiesel, bio-butanol | R&D stage |
| 4th Gen | Genetically engineered organisms, synthetic biology | Solar fuels, electro-fuels | Early R&D |
Common Biofuel Types
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