Government proposes E100 fuel approval for vehicles

📌 Summary:

• Government proposes to approve E100 fuel (100% ethanol) for use in vehicles — a major step in India's ethanol blending programme

• Currently, India's target is E20 (20% ethanol blending with petrol) by 2025; E100 approval would mark radical shift to pure ethanol vehicles

• E100 benefits: (1) Near-zero tailpipe carbon emissions vs petrol; (2) Reduces oil import bill; (3) Benefits sugarcane farmers (ethanol from sugarcane/grain surplus); (4) Supports energy security

• Challenges: E100 requires engine modifications (higher compression ratio, cold-start systems); existing petrol vehicles incompatible; distribution infrastructure (separate pumps) needed

• Brazil model: Brazil successfully runs "flex-fuel" vehicles that can run on any blend from E0-E100 — cited as template for India

• India's ethanol blending progress: achieved ~15% blending in FY25; FY26 target 20%; E100 is long-term vision

• Policy context: National Biofuel Policy 2018 (amended 2022); PMJDY role in ethanol distribution

📌 UPSC Relevance:

• GS3: Biofuels, energy security, environment, ethanol policy

📌 Prelims Facts:

• E100: 100% ethanol fuel | E20: 20% ethanol + 80% petrol blend

• Brazil: world's largest ethanol user; flex-fuel vehicles since 1970s

• National Biofuel Policy 2018: targets advanced biofuels from non-food feedstock