Hydrogen vs Battery: The Cost of Clean Public Transport

Rapid urban growth has intensified air pollution. Cities like Mumbai, Kolkata, and Chennai have thousands of PM2.5-related deaths annually. Clean transport is now a public health imperative.

• Initial Costs (Chart 3):

  • Hydrogen trucks and buses are costlier than battery alternatives.
  • Prices for both are falling, projected to converge by 2030.

• Operational Cost (Chart 4):

  • EV buses: $0.17/km
  • HFC buses: $0.84/km (green H2 from renewables even costlier)
  • Battery EVs dominate in cost-efficiency and infrastructure readiness.

• Current Market Trends (Chart 2):

  • Global EV sales expected to hit 20 million in 2024.
  • India contributes only 0.6 million, signalling a lag in adoption.
  • However, Indian cities (e.g., Delhi, Bengaluru) are gradually shifting to EV-based public transport fleets.

• Hydrogen’s Limited Use Cases:

  • Favoured in long-haul, heavy-duty sectors due to fast refueling.
  • Infrastructure remains underdeveloped, with only ~93,000 fuel cell vehicles globally.

• PM2.5 Pollution: Fine particulate matter <2.5μm that penetrates lungs, causes cardiovascular/respiratory diseases.

• Battery Electric Vehicles (BEVs): Vehicles using lithium-ion batteries, charged from electric grid.

• Hydrogen Fuel Cell Vehicles (HFCVs): Generate electricity onboard using hydrogen gas; only water as emission.

Battery EVs currently offer the most viable cost-effective clean transport for cities.

Hydrogen fuel remains important for future freight and long-haul solutions, but needs tech maturity + policy support.

India must tailor its clean transport strategy by balancing urban health needs, cost constraints, and energy sources.

Mains Mock Question:

"Discuss the relative advantages and limitations of hydrogen fuel cell vehicles and battery electric vehicles in the context of India’s clean transport goals. Suggest a phased adoption roadmap."