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India is transitioning to E20 fuel, a 20% ethanol-petrol blend, as a standard across the country.
The government aims to reduce oil import costs and lower carbon emissions through this mandate.
Critics highlight that sugarcane-based ethanol requires 3,000 litres of water per litre produced.
Karnataka, a top producer, already extracts over 68% of its annual groundwater resources.
More context
Concerns are rising that using rice and maize for fuel could impact domestic food security.
Political opposition groups argue the environmental case is weakened by agricultural water stress.
Unlike some nations using agricultural waste, India relies heavily on water-intensive primary crops.
Automotive compatibility remains a point of debate for owners of older vehicle models.
The policy is positioned as a pillar of India's energy security and self-reliance strategy.
Non-fare revenue experiments, like privately branded trains, continue alongside infrastructure shifts.