How India's first hydrogen-powered train works | Explained

📌 Summary:

• Prime Minister Narendra Modi flagged off India's first hydrogen-powered train on July 17, running on an 89-km stretch between Jind and Sonipat in Haryana

• Railway Minister Ashwini Vaishnaw described it as the latest chapter in Indian Railways' evolution from coal and steam to cleaner, more sustainable energy sources

• Configuration: a ten-coach train set with capacity to carry around 2,600 passengers

• Working principle: the train generates its own electricity onboard using hydrogen — a fuel cell combines hydrogen with atmospheric oxygen to produce electricity, with water vapour as the only emission

• Electricity produced drives traction motors; surplus energy is stored in onboard batteries and regenerative braking recovers energy during deceleration

• Advantage over diesel: zero carbon and particulate emissions at the point of use, and lower noise

• Advantage over electrification: viable on routes where overhead catenary electrification is uneconomical — hilly, remote or low-traffic sections

• Strategic linkage: aligns with the National Green Hydrogen Mission and Indian Railways' target of becoming a net-zero carbon emitter

• Constraints: high cost of green hydrogen, need for refuelling infrastructure, and hydrogen storage and safety requirements

🎯 UPSC Relevance: GS3 — Environment: renewable energy and climate mitigation; Infrastructure: railways and energy transition; Science & Technology: fuel cell applications.

📝 Prelims Facts:

• Route: Jind-Sonipat, Haryana; 89 km stretch; ten coaches; capacity around 2,600 passengers
• A hydrogen fuel cell produces electricity by combining hydrogen and oxygen, emitting only water vapour
• National Green Hydrogen Mission was approved in January 2023 with an outlay of Rs 19,744 crore
• Green hydrogen is produced by electrolysis of water using renewable electricity
• Germany, France, China and India are among the countries to have run hydrogen trains

🔑 Key Term: Hydrogen Fuel Cell — an electrochemical device that converts the chemical energy of hydrogen directly into electricity by reacting it with oxygen, producing only water and heat as by-products, without combustion.