Hydrogen Fuel Train
Source: Indian Express
GS II: Science and Technology
Overview
- News in Brief
- What is a Hydrogen Fuel Train?
- India’s Hydrogen Train Project
Why in the News?
India has developed its first indigenous hydrogen-powered train as part of Indian Railways’ transition towards cleaner and low-carbon transportation.
News in Brief
- The train is planned for deployment on the Jind–Sonipat route in Haryana and is expected to carry up to 2,600 passengers.
- The initiative represents an important step towards reducing the dependence of Indian Railways on diesel, promoting domestic clean-energy technologies and supporting India’s net-zero commitments.
What is a Hydrogen Fuel Train?
- A hydrogen fuel train, also called a hydrail, uses hydrogen fuel cells to generate electricity for powering its traction motors.
- Unlike conventional diesel trains, hydrogen fuel-cell trains do not burn fossil fuels during operation.
- Their primary point-of-use by-products are water vapour and heat, making them a potential zero-emission alternative for railway routes where complete electrification is difficult or uneconomical.
How Does It Work?
The operation of a hydrogen fuel train involves the following process:
- Hydrogen stored in high-pressure tanks is supplied to the fuel-cell system.
- Inside the fuel cell, hydrogen reacts electrochemically with oxygen drawn from the atmosphere.
- This reaction generates electricity, water and heat.
- The electricity powers the train’s electric traction motors.
- Batteries store excess electricity and supply additional power during acceleration.
Thus, the train combines hydrogen fuel cells, batteries and electric motors to create a hybrid propulsion system.
India’s Hydrogen Train Project
- The indigenous hydrogen train has been designed and manufactured under Indian Railways’ clean-mobility programme.
- It is a ten-coach train set developed for operation on broad-gauge tracks.
- The project is associated with the Hydrogen for Heritage initiative, under which hydrogen-powered trains are proposed for selected heritage and hill railway routes.
- Such trains can reduce diesel consumption while preserving routes where overhead electrification may affect landscapes or heritage structures.
- The initiative also complements the National Green Hydrogen Mission, launched in 2023 with an initial outlay of ₹19,744 crore.
- The Mission aims to develop India as a global centre for producing, using and exporting green hydrogen.
- India targets annual green-hydrogen production of five million metric tonnes by 2030.
Significance of Hydrogen Fuel Trains
Environmental Benefits
Hydrogen trains can reduce local air pollution, carbon emissions and noise compared with diesel locomotives. Their environmental advantage is greatest when the hydrogen is produced using renewable energy.
Suitable for Non-Electrified Routes
Hydrogen propulsion can serve remote, low-traffic and difficult terrains where installing overhead electric lines is costly.
Energy Security
The adoption of domestically produced green hydrogen can reduce India’s dependence on imported petroleum and improve long-term energy security.
Technological Self-Reliance
Indigenous development of fuel cells, storage systems and train components supports Atmanirbhar Bharat, advanced manufacturing and employment generation.
Major Challenges
- Hydrogen trains face several limitations, including the high cost of green hydrogen, limited refuelling infrastructure and energy losses during hydrogen production, compression, storage and conversion.
- Hydrogen is also highly inflammable and requires strict safety standards.
- Establishing specialised storage tanks, refuelling stations and maintenance facilities would involve significant initial investment.
- Moreover, hydrogen trains may not be economically preferable on heavily used routes that can be directly electrified.
Way Forward
India should prioritise hydrogen trains on non-electrified, heritage and difficult-terrain routes rather than treating them as a universal alternative to railway electrification.
Domestic manufacturing of electrolysers and fuel cells, renewable-powered hydrogen production, common safety standards and pilot-route evaluation must be strengthened. Life-cycle emissions should also be assessed to ensure that the hydrogen used is genuinely low-carbon.
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