SUBJECT: Environment & Economy (GS Paper III – Environment | Energy Security | Agriculture)

Why in News?

India’s E20 (20% ethanol blending) programme has significantly increased ethanol production, but concerns are growing over its heavy dependence on sugarcane-based ethanol, raising questions about water use, food security, economic efficiency, and long-term sustainability.

What is India’s Ethanol Blending Programme (EBP)?

The Ethanol Blended Petrol (EBP) Programme aims to blend ethanol with petrol to:

• Reduce crude oil imports.
• Improve energy security.
• Lower greenhouse gas emissions.
• Increase farmers’ income.
• Promote cleaner fuels.

India has advanced its target of 20% ethanol blending (E20) ahead of schedule.

Why is Sugarcane-Based Ethanol a Concern?

India’s ethanol production largely depends on sugarcane, especially sugarcane juice and molasses.

Challenges

1. High Water Consumption

Sugarcane is among India’s most water-intensive crops.

Major sugarcane-producing states like:

• Maharashtra
• Karnataka

already face frequent water stress.

Expanding sugarcane cultivation may worsen groundwater depletion.

2. Intensive Fertiliser Use

Sugarcane requires:

• Large quantities of fertilizers.
• High energy inputs.

This contributes to:

• Soil degradation.
• Water pollution.
• Higher production costs.

3. Food vs Fuel Debate

Increasing diversion of sugarcane towards ethanol may affect:

• Sugar production.
• Food availability.
• Food prices.

Balancing fuel security with food security becomes essential.

Economic Concerns

The overall benefits of E20 depend on whether:

• Savings in crude oil imports,
• Environmental benefits, and
• Higher rural incomes

are greater than the additional production and resource costs.

Concerns

• Consumers may pay higher fuel prices.
• E20 may provide slightly lower mileage than pure petrol.
• Oil Marketing Companies procure ethanol at administered prices.
• Benefits are unevenly distributed across the value chain.

Higher feedstock prices alone cannot solve structural problems faced by farmers, such as:

• Post-harvest losses.
• Weak market access.
• Low value addition.

Policy Concern

Currently, ethanol receives similar incentives regardless of the feedstock used.

This disproportionately benefits sugarcane because:

• Existing production is large.
• Distillation infrastructure is already well developed.

The policy should therefore consider:

• Water efficiency.
• Resource sustainability.
• Food security.
• Environmental impacts.

Sustainable Alternatives to Sugarcane

1. Maize-Based Ethanol

India has expanded maize-based ethanol production.

Advantages

• Requires less water than sugarcane.
• Diversifies feedstock.

Limitation

• Requires significant fertilizer use.

2. Millets

Advantages:

• Climate-resilient.
• Low water requirement.
• Suitable for dryland agriculture.

Limitation:

• Lower starch content reduces ethanol yield.

3. Sweet Sorghum

Advantages:

• Shorter crop duration.
• Less water requirement.
• Suitable for semi-arid regions.

It is considered a promising alternative feedstock.

Second-Generation (2G) Ethanol

What is 2G Ethanol?

Second-generation ethanol is produced from agricultural residues (lignocellulosic biomass) rather than food crops.

Feedstock

• Rice straw
• Wheat straw
• Maize stover
• Groundnut shells
• Other crop residues

Advantages of 2G Ethanol

• Does not compete with food crops.
• Reduces “Food vs Fuel” conflict.
• Utilizes agricultural waste.
• Helps reduce stubble burning.
• Lowers air pollution.
• Promotes circular economy.

Challenges

2G ethanol remains:

• Costlier than conventional ethanol.
• Technologically complex.
• Dependent on efficient residue collection and storage systems.

Government Support Needed

To strengthen the 2G ethanol ecosystem:

• Premium pricing for residue-based ethanol.
• Subsidies for residue collection machinery.
• Better storage infrastructure.
• Contracts between residue aggregators and distilleries.
• Viability Gap Funding (VGF).
• Assured procurement (offtake agreements).

Integrated Policy Approach

India’s ethanol policy should be aligned with:

• Agricultural policy.
• Water resource management.
• Food security.
• Energy security.
• Environmental sustainability.

Import substitution alone should not justify higher fuel costs or environmentally unsustainable production practices.

Way Forward

• Diversify ethanol feedstocks beyond sugarcane.
• Promote maize, millets, and sweet sorghum where appropriate.
• Accelerate investment in second-generation (2G) ethanol.
• Encourage efficient irrigation and sustainable farming.
• Improve logistics and revenue-sharing mechanisms across the ethanol value chain.
• Balance energy security with food and water security.

A feedstock-diversified, resource-efficient, and consumer-sensitive ethanol strategy is essential for achieving India’s long-term energy and sustainability goals.

 UPSC Mains Question (15 Marks)

“While ethanol blending contributes to India’s energy security, its overdependence on sugarcane raises concerns regarding sustainability. Discuss. Suggest measures for developing a diversified and resource-efficient ethanol ecosystem.”