India's First Hydrogen-Powered Train Explained: How It Works, Hydrogen Fuel Cells, Safety, Green Hydrogen & Future of Indian Railways
- Aditya
- 11 hours ago
- 20 min read
From Proton Exchange Membrane (PEM) fuel cells and green hydrogen production to onboard electricity generation, safety systems, global hydrogen trains, and India's National Green Hydrogen Mission, here's everything you need to know about India's first hydrogen-powered train in one comprehensive guide.
Table of Content
India's First Hydrogen-Powered Train Explained
India has taken a significant step towards cleaner and more sustainable transportation with the launch of its first hydrogen-powered passenger train. Flagged off by Prime Minister Narendra Modi on July 17, 2026, the train will operate on the 89-km Jind–Sonipat section of Northern Railway in Haryana.
The project represents far more than the introduction of another train. It marks the beginning of Indian Railways' transition towards zero-emission propulsion technologies, reducing dependence on fossil fuels while supporting the country's ambitious National Green Hydrogen Mission and long-term Net Zero emissions target.
Unlike conventional diesel locomotives that burn fuel to move the train or electric trains that rely on overhead power lines, India's hydrogen train carries its own miniature power plant onboard. It generates electricity through a clean chemical reaction using hydrogen and oxygen, producing only water vapour and heat as by-products.
Although hydrogen-powered trains are still in their early stages worldwide, India has now joined a select group of countries—including Germany, Japan, France, China, Italy and the United States—that are testing or deploying this next-generation rail technology.
But what exactly is a hydrogen-powered train? How does it generate electricity without burning fuel? Is travelling on a train carrying highly flammable hydrogen safe? And could hydrogen eventually replace diesel locomotives across India's railway network?
This comprehensive explainer answers all these questions and more.
Why India's First Hydrogen Train Is Historic
Indian Railways is one of the largest rail networks in the world, carrying millions of passengers every day. While electrification has expanded rapidly over the last decade, many railway routes still depend on diesel locomotives.
Hydrogen fuel cell technology offers an alternative for routes where complete electrification may not be practical or where cleaner propulsion is desirable.
The launch of the hydrogen-powered train is significant because it:
Introduces India's first indigenous hydrogen fuel cell-powered passenger train.
Demonstrates the use of green hydrogen as a transport fuel.
Supports India's transition towards low-carbon transportation.
Reduces dependence on imported fossil fuels.
Strengthens India's clean energy ecosystem.
Provides operational experience for future hydrogen-powered railway projects.
The project also reflects the government's broader push towards renewable energy, clean mobility, and technological self-reliance under the Atmanirbhar Bharat initiative.
What Is a Hydrogen-Powered Train?
A hydrogen-powered train is a railway vehicle that produces its own electricity onboard using hydrogen fuel cells, instead of drawing electricity from overhead wires or burning diesel.
In simple terms, the train acts like a moving power station.
Instead of carrying diesel fuel for combustion, it carries compressed hydrogen stored in specially designed high-pressure cylinders. Inside the train, hydrogen reacts with oxygen from the surrounding air inside a
Proton Exchange Membrane (PEM) fuel cell. This electrochemical reaction generates electricity, which powers electric traction motors connected to the wheels.
Unlike diesel engines, there is no combustion process.
As a result:
No carbon dioxide is emitted directly.
No smoke is produced.
No harmful exhaust gases are released.
The only by-products are water vapour and heat.
This makes hydrogen fuel cells one of the cleanest propulsion technologies currently available for rail transport.
India's First Hydrogen Train at a Glance
India's first hydrogen-powered train has been designed and developed as a pilot project to demonstrate the feasibility of hydrogen-powered rail transportation under Indian operating conditions.
Key Specifications
Feature | Details |
Route | Jind–Sonipat (Haryana) |
Distance | 89 km |
Coaches | 10 |
Configuration | 2 Hydrogen Driving Power Cars + 8 Trailer Coaches |
Passenger Capacity | Around 2,600 passengers |
Operational Speed | 75 km/h |
Design Speed | 110 km/h |
Propulsion | Hydrogen Fuel Cell |
Fuel | Compressed Hydrogen |
By-products | Water vapour and heat |
The train has been designed to provide a passenger experience similar to other modern trainsets while operating with significantly lower direct emissions.
How Is It Different from Diesel and Electric Trains?
Most people are familiar with two types of trains:
Diesel trains
Diesel locomotives carry diesel fuel and burn it inside large internal combustion engines. The mechanical energy produced by combustion ultimately drives the wheels.
While diesel locomotives are powerful and suitable for long-distance operations, they emit:
Carbon dioxide (CO₂)
Nitrogen oxides (NOₓ)
Particulate matter
Other pollutants that contribute to air pollution and climate change
Electric trains
Electric trains do not carry fuel onboard. Instead, they receive electricity continuously from overhead electric lines through a pantograph.
These trains produce no direct tailpipe emissions, but they depend on extensive electrification infrastructure along railway tracks.
Hydrogen-powered trains
Hydrogen trains combine some advantages of both systems.
Like electric trains, they use electric motors for traction.
However, unlike conventional electric trains, they generate electricity onboard, eliminating the need for continuous overhead power supply.
Instead of combustion, electricity is produced through a chemical reaction inside hydrogen fuel cells.
This makes them especially attractive for routes where installing overhead electric infrastructure is expensive or operationally challenging.
Inside India's Hydrogen Train
The train consists of:
Two Hydrogen Driving Power Cars (DPCs)
Eight Trailer Coaches
Each Hydrogen Driving Power Car houses several critical systems, including:
Proton Exchange Membrane (PEM) fuel cells
Hydrogen storage cylinders
Lithium Iron Phosphate (LFP) batteries
Power electronics
Electric traction motors
Safety monitoring systems
Together, the two driving power cars produce approximately 1,200 kW (about 1,600 horsepower) each, providing sufficient power to move the entire 10-coach train.
The onboard batteries help manage fluctuations in power demand, store regenerated energy during braking, and support smooth acceleration, making the system more energy-efficient.
Who Developed India's First Hydrogen Train?
The project showcases collaboration between several Indian organisations.
The Research Designs and Standards Organisation (RDSO) prepared the technical specifications and led the design approval process for the train.
The hydrogen trainset was integrated by Medha Servo Drives, while the Integral Coach Factory (ICF), Chennai, contributed to the train's overall theme and exterior design.
The project has largely been developed using indigenous engineering capabilities, supporting India's objective of strengthening domestic manufacturing under the Atmanirbhar Bharat initiative.
Why Hydrogen Is Considered the Fuel of the Future
Hydrogen is the most abundant element in the universe, but it rarely exists in its pure form on Earth. It is commonly found combined with oxygen in water or with carbon in hydrocarbons.
What makes hydrogen attractive as a clean energy source is its exceptionally high energy content.
Hydrogen contains approximately 120 megajoules of energy per kilogram (MJ/kg), compared with about 43 MJ/kg for diesel fuel.
However, unlike fossil fuels, hydrogen itself does not produce carbon emissions when used in a fuel cell.
Instead, hydrogen combines with oxygen to generate electricity, releasing only water vapour and heat.
Because of these properties, hydrogen is increasingly being explored worldwide for applications in:
Railways
Heavy-duty trucks
Buses
Ships
Aviation
Industrial manufacturing
Backup power systems
Many countries see hydrogen as an important part of the transition towards cleaner energy systems, particularly in sectors where battery-electric technology may not be practical.
Why This Project Matters for India
India has committed to reducing the carbon intensity of its economy and expanding the use of clean energy technologies.
The hydrogen train aligns with several national priorities, including:
Promoting clean transportation
Supporting the National Green Hydrogen Mission
Reducing greenhouse gas emissions
Lowering dependence on imported fossil fuels
Encouraging indigenous technology development
Building expertise in hydrogen production, storage, and utilisation
Beyond railways, the experience gained from this project could support wider adoption of hydrogen across other sectors of the economy.
How Does a Hydrogen-Powered Train Work? Understanding PEM Fuel Cells, Green Hydrogen, and the Science Behind India's First Hydrogen Train
At first glance, a hydrogen-powered train may look like any modern passenger train. But beneath its sleek exterior lies an advanced energy system that functions very differently from conventional locomotives.
Unlike diesel trains, which burn fuel inside an engine, or electric trains, which draw electricity from overhead wires, a hydrogen-powered train produces its own electricity onboard using hydrogen fuel cells.
The entire process takes place silently, efficiently, and without combustion. Instead of smoke and harmful emissions, the only direct by-products are water vapour and heat.
This technology allows the train to operate almost like a mobile power station, converting hydrogen into electricity whenever the train is running.
What Is a Hydrogen Fuel Cell?
A fuel cell is an electrochemical device that converts the chemical energy stored in a fuel directly into electrical energy.
Unlike a battery, which stores a fixed amount of electricity and eventually runs out, a fuel cell keeps generating electricity as long as it receives a continuous supply of fuel and oxygen.
Think of it as a small power plant.
Instead of burning coal, diesel or natural gas, the fuel cell uses hydrogen to produce electricity through a controlled chemical reaction.
This process is cleaner because no combustion takes place.
As a result, there are:
No smoke
No soot
No carbon dioxide emissions at the point of use
Very little noise
Higher energy efficiency compared to conventional combustion engines
Hydrogen fuel cells are increasingly being used in trains, buses, trucks, ships and even spacecraft because they provide clean, reliable and continuous power.
What Is a Proton Exchange Membrane (PEM) Fuel Cell?
India's first hydrogen-powered train uses a Proton Exchange Membrane Fuel Cell (PEMFC), one of the most widely used fuel cell technologies for transportation.
A PEM fuel cell is designed to generate electricity quickly, efficiently and reliably, making it suitable for vehicles that require frequent acceleration and varying power demands.
The core of a PEM fuel cell consists of:
An Anode (negative electrode)
A Cathode (positive electrode)
A Proton Exchange Membrane
A Catalyst, usually made using platinum-based materials
The membrane plays a crucial role by allowing only hydrogen ions (protons) to pass through while blocking electrons. This separation creates an electric current that powers the train.
Step-by-Step: How Does a Hydrogen Fuel Cell Produce Electricity?
The working principle of a PEM fuel cell may sound complex, but it can be understood in a few simple steps.
Step 1: Hydrogen Enters the Fuel Cell
Compressed hydrogen stored inside high-pressure cylinders is supplied to the anode side of the fuel cell.
At the same time, oxygen from the surrounding air enters the cathode side.
This means the train does not need to carry oxygen onboard—it simply uses atmospheric air.
Step 2: Hydrogen Molecules Split
At the anode, hydrogen molecules come into contact with a catalyst.
The catalyst separates each hydrogen molecule into:
Positively charged hydrogen ions (protons)
Negatively charged electrons
This is the beginning of the electricity-generation process.
Step 3: Protons Cross the Membrane
The PEM membrane allows only hydrogen ions (protons) to pass through.
Electrons, however, cannot cross the membrane.
Since they have no direct path, they are forced to travel through an external electrical circuit.
This movement of electrons creates electric current, which is the electricity needed to power the train.
Step 4: Electricity Powers the Train
The electric current produced by the fuel cell flows to:
Electric traction motors
Battery management systems
Auxiliary electrical equipment
The traction motors convert electrical energy into mechanical motion, rotating the wheels and moving the train forward.
Unlike diesel engines, which rely on combustion and mechanical transmission systems, hydrogen trains use electric motors similar to those found in modern electric trains.
Step 5: Water Is Produced
After completing the electrical circuit, the electrons return to the cathode.
There, they combine with:
Hydrogen ions
Oxygen from the air
The final products are:
Water vapour
Heat
No carbon dioxide is produced because carbon is not involved in the reaction.
This is why hydrogen fuel cell technology is often described as zero tailpipe emission technology.
Why Doesn't the Train Burn Hydrogen?
One of the biggest misconceptions is that hydrogen trains work like gas-powered vehicles by burning hydrogen.
They do not.
Hydrogen inside the train is not burned.
Instead, it participates in an electrochemical reaction inside the fuel cell.
This is a major difference.
Diesel Engine
Fuel + Oxygen → Combustion → Heat → Mechanical Energy
Hydrogen Fuel Cell
Hydrogen + Oxygen → Electrochemical Reaction → Electricity + Water
Because there is no combustion:
Energy losses are lower.
Noise levels are much lower.
Mechanical wear is reduced.
Emissions are significantly lower.
Why Does the Train Also Have Batteries?
Although the fuel cell continuously generates electricity, India's hydrogen train also uses Lithium Iron Phosphate (LFP) batteries.
These batteries perform several important functions.
Supporting Acceleration
When the train starts moving or climbs gradients, electricity demand increases rapidly.
The batteries provide additional power during these periods.
Storing Regenerative Braking Energy
Whenever the train slows down, its electric motors act as generators.
Instead of wasting this energy as heat, regenerative braking converts it into electricity.
The batteries store this recovered energy for later use.
Stabilising Power Supply
Passenger trains experience constant changes in power demand due to acceleration, braking, gradients and onboard electrical systems.
The batteries smooth these fluctuations and help maintain stable operation.
Improving Fuel Cell Efficiency
Fuel cells operate most efficiently at relatively constant loads.
The batteries absorb sudden changes in demand, allowing the fuel cells to operate more efficiently and extend their lifespan.
Why Is Hydrogen Considered Such an Energy-Rich Fuel?
Hydrogen has one of the highest energy contents of any known fuel.
Approximately:
Hydrogen: about 120 megajoules per kilogram (MJ/kg)
Diesel: about 43 MJ/kg
This means hydrogen contains nearly three times more energy per kilogram than diesel.
However, hydrogen is also much less dense by volume.
That is why it must be compressed to very high pressures before storage.
Its high energy content makes hydrogen particularly attractive for:
Heavy trains
Trucks
Ships
Aircraft
Long-distance transport
where batteries alone may become too heavy or require long charging times.
What Is Green Hydrogen?
Not all hydrogen is environmentally friendly.
Hydrogen is classified according to how it is produced.
Green Hydrogen
Green hydrogen is produced by splitting water into hydrogen and oxygen using electricity generated from renewable sources such as solar, wind or hydropower.
Since renewable electricity is used, almost no greenhouse gas emissions are associated with production.
This is considered the cleanest form of hydrogen.
Grey Hydrogen
Grey hydrogen is produced from natural gas through steam methane reforming.
Although widely used today, this process releases significant amounts of carbon dioxide.
Blue Hydrogen
Blue hydrogen is also produced from natural gas, but carbon dioxide emissions are captured and stored using Carbon Capture and Storage (CCS) technology.
It produces fewer emissions than grey hydrogen but is not completely carbon-free.
How Is Hydrogen Produced for India's First Hydrogen Train?
Indian Railways has established a dedicated green hydrogen production plant at Jind to support train operations.
The hydrogen is produced onsite through electrolysis, a process that separates water into hydrogen and oxygen using electricity.
The process takes place in three stages:
Stage 1: Electrolysis
Electricity passes through purified water.
The water molecules split into:
Hydrogen
Oxygen
The hydrogen is collected, while oxygen is released or used for other industrial purposes.
Stage 2: Compression
Hydrogen gas occupies a large volume under normal conditions.
To store sufficient fuel onboard the train, the gas is compressed to approximately 500 bar.
Compression allows much larger quantities of hydrogen to be stored safely in specially designed high-pressure cylinders.
Stage 3: Refuelling
When the train arrives at the refuelling station, hydrogen is dispensed at around 350 bar through dedicated dispensers.
Both Hydrogen Driving Power Cars can be refuelled simultaneously, reducing turnaround time and improving operational efficiency.
The Jind hydrogen facility can store nearly 3,000 kilograms of hydrogen, enough to support regular operations of the train.
The storage, compression and dispensing systems have been approved by the Petroleum and Explosives Safety Organisation (PESO).
Why Is Hydrogen Considered a Promising Fuel for Transportation?
Hydrogen combines several characteristics that make it attractive for future mobility.
It offers:
High energy density by weight.
Fast refuelling compared with charging large batteries.
Zero direct carbon emissions when used in fuel cells.
Quiet operation.
Compatibility with renewable energy through green hydrogen production.
Potential applications in railways, heavy trucks, buses, ships and aviation.
For these reasons, many countries are investing in hydrogen technologies alongside battery-electric systems as part of their long-term clean energy strategies.
Are Hydrogen Trains Safe? Global Hydrogen Rail Projects, Advantages, Challenges, and the Future of Hydrogen-Powered Railways in India
Hydrogen is highly flammable, yet hydrogen-powered trains are considered safe because of multiple layers of engineering, monitoring, and international safety standards. As India launches its first hydrogen-powered train, here's how the technology ensures passenger safety, how other countries are using hydrogen rail systems, and whether hydrogen could become the future of sustainable transportation.
Hydrogen has often been described as the fuel of the future, but it also raises an obvious question:
Is it safe to travel on a train carrying compressed hydrogen gas?
The concern is understandable. Hydrogen is highly flammable and burns easily under certain conditions. However, engineers designing hydrogen-powered trains treat safety as the highest priority.
Every stage—from hydrogen production and storage to refuelling and onboard operation—is protected by multiple independent safety systems that continuously monitor the train and automatically respond if anything unusual is detected.
The result is a transportation system designed not only to reduce carbon emissions but also to operate safely under demanding railway conditions.
Is Hydrogen Dangerous?
Hydrogen is the lightest and most abundant element in the universe.
In its pure form, hydrogen is:
Colourless
Odourless
Tasteless
Non-toxic
However, hydrogen is also highly flammable, which is why it must be stored, transported, and handled carefully.
Unlike fuels such as diesel or petrol, hydrogen disperses extremely quickly because it is much lighter than air. If released in an open environment, it rises rapidly into the atmosphere rather than pooling near the ground.
Even so, railway engineers assume that no leak is acceptable and design the entire system to detect even the smallest amount of escaping hydrogen.
How Does India's Hydrogen Train Ensure Passenger Safety?
Indian Railways has incorporated several layers of protection to minimise risks.
Continuous Hydrogen Leak Detection
Sensitive hydrogen sensors continuously monitor:
Fuel storage cylinders
Fuel cell compartments
Hydrogen pipelines
Refuelling systems
Even tiny hydrogen leaks can be detected immediately.
Flame Detection Systems
Special flame detectors continuously monitor the train for any unexpected ignition.
Hydrogen flames can sometimes be difficult to see with the naked eye, making dedicated flame detection technology particularly important.
Heat and Smoke Monitoring
The train constantly monitors:
Temperature
Smoke
Abnormal heat
If unusual conditions develop, the onboard control system immediately alerts operators.
Automatic Hydrogen Shut-Off
Perhaps the most important safety feature is the automatic isolation system.
If the sensors detect:
Hydrogen leakage
Excessive heat
Fire
Smoke
Abnormal operating conditions
the train automatically shuts off the hydrogen supply without waiting for manual intervention.
This rapid response helps prevent small problems from becoming major incidents.
Continuous Ventilation
Hydrogen is lighter than air.
To ensure it never accumulates inside enclosed spaces, the train has continuous ventilation systems that keep air circulating at all times.
If even a small amount of hydrogen escapes, fresh airflow rapidly dilutes and disperses it into the atmosphere.
Emergency Mode for the Loco Pilot
The locomotive cab has also been specially designed for emergency situations.
The Loco Pilot receives real-time information on:
Fuel cell performance
Hydrogen storage
Battery status
System health
Safety alarms
In case of an emergency, the train can be operated in a controlled emergency mode to move it safely away from stations or populated areas whenever operationally possible.
Safety at the Jind Hydrogen Refuelling Facility
Passenger safety begins long before the train starts its journey.
India's dedicated hydrogen production and refuelling facility at Jind, Haryana, has been designed with multiple independent protection systems.
These include:
Hydrogen leak detectors
Flame detectors
Automatic shutdown systems
Fire alarm systems
Water spray fire protection
Controlled ventilation
Continuous operational monitoring
The facility has received approval from the Petroleum and Explosives Safety Organisation (PESO) for hydrogen storage and dispensing.
The hydrogen ecosystem has also been designed in accordance with internationally recognised safety standards, including:
NFPA-2 (National Fire Protection Association Hydrogen Technologies Code)
ISO 19880 Series for hydrogen fuelling infrastructure
Before commissioning, the entire project underwent an independent third-party safety assessment by TÜV SÜD, Germany, one of the world's leading technical inspection and certification organisations.
How Does India Refill a Hydrogen Train?
Unlike diesel locomotives that are refuelled with liquid fuel, hydrogen trains require specialised infrastructure.
The refuelling process involves three main stages:
Step 1: Hydrogen Production
Hydrogen is produced onsite through electrolysis, where electricity splits water into hydrogen and oxygen.
When renewable electricity is used, the product is known as green hydrogen.
Step 2: Compression
Hydrogen gas occupies a large volume.
To store enough fuel for railway operations, it is compressed to around 500 bar, allowing significantly larger quantities to be stored in compact high-pressure cylinders.
Step 3: Refuelling
Hydrogen is supplied to the train through dedicated dispensers at approximately 350 bar.
Both Hydrogen Driving Power Cars can be refuelled simultaneously, reducing turnaround time between journeys.
The Jind facility can store approximately 3,000 kilograms of hydrogen, sufficient to support regular train operations.
Hydrogen Trains Around the World
Although hydrogen trains receive considerable attention, they remain a relatively new technology globally.
Only a handful of countries have moved beyond testing into commercial or pilot operations.
Germany
Germany became the first country to introduce commercial hydrogen passenger trains.
Its hydrogen-powered regional trains demonstrated that fuel cells could successfully replace diesel trains on non-electrified routes.
France
France is testing hydrogen multiple units as part of efforts to decarbonise regional rail transport.
Italy
Italy is introducing hydrogen-powered trains on selected regional railway corridors as part of its clean mobility strategy.
Japan
Japan has developed hydrogen-powered hybrid trains, including the HYBARI prototype, to evaluate future commercial deployment.
China
China is actively testing hydrogen rail technologies alongside broader investments in hydrogen buses, trucks, and industrial applications.
United States
Several American transport agencies are evaluating hydrogen-powered passenger trains for regional commuter services, including projects in California.
India's Position
With the Jind–Sonipat hydrogen train, India joins a select group of countries experimenting with hydrogen-powered railway technology.
However, India's project is notable because it has been designed and developed largely using indigenous engineering capabilities, reflecting the country's focus on technological self-reliance.
Advantages of Hydrogen-Powered Trains
Hydrogen trains offer several potential benefits compared with conventional diesel locomotives.
Zero Tailpipe Carbon Emissions
Fuel cells generate electricity without burning fossil fuels.
The only direct by-products are:
Water vapour
Heat
This significantly reduces local air pollution.
Cleaner Air
Hydrogen trains do not emit:
Carbon dioxide
Nitrogen oxides
Sulphur oxides
Particulate matter
making them environmentally attractive, particularly in densely populated regions.
Higher Energy Efficiency
Fuel cells convert chemical energy into electricity more efficiently than internal combustion engines.
While diesel engines typically convert only about 33–35% of fuel energy into useful work, hydrogen fuel cells can achieve efficiencies of up to around 60% under favourable operating conditions.
Quiet Operation
Electric traction motors produce far less noise and vibration than diesel engines, improving passenger comfort and reducing noise pollution.
Reduced Mechanical Maintenance
Fuel cells contain fewer moving parts than internal combustion engines.
Fewer moving components can reduce wear and maintenance requirements over time.
Fast Refuelling
Unlike battery-electric trains that may require extended charging times, hydrogen trains can be refuelled relatively quickly once appropriate infrastructure is available.
Suitable for Non-Electrified Routes
Hydrogen trains generate electricity onboard and therefore do not depend on continuous overhead electric wires.
This makes them attractive for railway routes where electrification may not be economically feasible.
Challenges Facing Hydrogen Rail Technology
Despite its promise, hydrogen technology still faces several important challenges.
High Production Cost
Producing green hydrogen remains expensive because it requires renewable electricity and specialised electrolysers.
Storage Challenges
Hydrogen has low volumetric density.
It must be compressed to very high pressures or liquefied, requiring specialised storage systems.
Limited Infrastructure
Hydrogen production plants, storage facilities, pipelines and refuelling stations are still limited in most countries.
Developing this infrastructure requires significant investment.
Flammability
Hydrogen's high flammability means robust engineering, continuous monitoring and strict operational procedures are essential.
Initial Capital Investment
Hydrogen trains, fuel cells and refuelling infrastructure currently cost more than conventional diesel systems.
However, costs are expected to decline as technology matures and production scales up.
Hydrogen Beyond Railways
Hydrogen is not limited to trains.
It is increasingly being explored across multiple sectors.
Hydrogen Cars
Examples include:
Toyota Mirai
Hyundai Nexo
These vehicles use hydrogen fuel cells instead of internal combustion engines.
Hydrogen Buses
Several countries are introducing hydrogen-powered public buses to reduce urban emissions.
Hydrogen Ships
India has already developed its first indigenous hydrogen fuel cell-powered catamaran ferry, demonstrating the technology's potential for maritime transport.
Heavy Industry
Hydrogen is also expected to play a major role in:
Steel manufacturing
Fertiliser production
Chemical industries
Backup power generation
The Future of Hydrogen Trains in India
The Jind–Sonipat project is only the beginning.
Indian Railways plans to use the experience gained from this pilot project to evaluate wider deployment of hydrogen-powered rolling stock.
One area under consideration is the use of hydrogen trains on heritage railway routes, including the iconic Kalka–Shimla Railway, where environmentally friendly transportation can complement heritage conservation.
The project also contributes directly to the National Green Hydrogen Mission, which aims to make India a global hub for the production, utilisation and export of green hydrogen.
As renewable electricity becomes cheaper and hydrogen production technologies continue to improve, hydrogen could become an increasingly important part of India's clean transportation ecosystem.
While hydrogen is unlikely to replace every electric train—especially on fully electrified routes—it offers a promising solution for selected non-electrified corridors, heritage railways, and other applications where battery-electric systems may face limitations.
India's first hydrogen-powered train is more than a technological milestone—it is a demonstration of how clean energy, indigenous innovation and modern engineering can reshape the future of transportation.
By combining Proton Exchange Membrane fuel cells, green hydrogen production, advanced safety systems and dedicated refuelling infrastructure, Indian Railways has laid the foundation for a new generation of zero-emission rail mobility.
The project will provide valuable operational experience, helping engineers refine hydrogen technology for future deployment while supporting India's goals of energy security, sustainable development and Net Zero emissions.
Although challenges such as hydrogen production costs and infrastructure development remain, the launch of the Jind–Sonipat hydrogen train signals India's entry into one of the most promising frontiers of clean mobility.
As hydrogen technology evolves globally, the lessons learned from this pioneering project could influence not only the future of Indian Railways but also the broader transition towards cleaner transport systems across the world.
Hydrogen Trains vs Electric and Diesel Trains: Which Is Better? Myths, Costs, Environmental Impact, and the Future of Hydrogen Mobility
India's first hydrogen-powered train has generated considerable excitement because it represents a new direction for sustainable rail transport. However, hydrogen is not a universal replacement for diesel or electric trains. Each propulsion technology has its own strengths and limitations.
The future of railway transportation is likely to involve a combination of technologies rather than a single solution. Understanding where hydrogen fits into this mix helps explain why many countries—including India, Germany, Japan, China, France, Italy and the United States—are investing in hydrogen rail technology.
Hydrogen Train vs Diesel Train
For over a century, diesel locomotives have been the backbone of railway transportation worldwide. They are reliable, powerful and capable of operating without external electricity.
However, diesel engines also burn fossil fuels, releasing greenhouse gases and air pollutants that contribute to climate change and poor air quality.
Hydrogen-powered trains eliminate this problem by generating electricity through fuel cells instead of combustion.
Feature | Hydrogen Train | Diesel Train |
Fuel | Hydrogen | Diesel |
Propulsion | Electric motors powered by fuel cells | Internal combustion engine |
Tailpipe Emissions | Water vapour only | Carbon dioxide, NOx, particulate matter |
Noise | Low | High |
Energy Efficiency | Higher | Lower |
Maintenance | Lower due to fewer moving parts | Higher because of complex mechanical systems |
Fuel Dependency | Green hydrogen can be produced domestically | Relies on petroleum products |
Hydrogen trains therefore offer clear environmental advantages over diesel locomotives, particularly on routes that have not yet been electrified.
Hydrogen Train vs Electric Train
Many people assume hydrogen trains will replace electric trains, but this is unlikely.
Electric trains powered through overhead wires remain one of the most energy-efficient forms of railway transportation because electricity is supplied directly from the grid without intermediate conversion.
Hydrogen trains, on the other hand, first require electricity to produce hydrogen through electrolysis. The hydrogen is then compressed, transported, stored, and finally converted back into electricity inside the fuel cell.
Each of these steps involves some energy loss.
Feature | Hydrogen Train | Electric Train |
Power Source | Hydrogen fuel cells | Overhead electric lines |
Need for Electrification | No | Yes |
Infrastructure Cost | Hydrogen production and refuelling stations | Electrified tracks and substations |
Energy Efficiency | Moderate | Very high |
Refuelling | Fast | Not required |
Suitable for Remote Routes | Yes | Limited if electrification is absent |
For heavily used railway corridors, overhead electrification generally remains the preferred solution. Hydrogen trains become more attractive on remote or lightly used routes where electrification is expensive.
Can Hydrogen Trains Replace Diesel Locomotives?
Not immediately.
Hydrogen-powered trains are currently intended to complement—not completely replace—diesel locomotives.
The technology is especially useful for:
Regional passenger trains
Heritage railways
Rural railway lines
Non-electrified routes
Tourist railways
As green hydrogen production becomes cheaper and refuelling infrastructure expands, hydrogen trains could gradually replace diesel trains on more routes.
Why Doesn't Every Country Use Hydrogen Trains Yet?
Although hydrogen fuel cell technology has been researched for decades, widespread adoption remains limited because of several practical challenges.
High Production Costs
Green hydrogen is still considerably more expensive than diesel and grid electricity.
Most hydrogen produced today worldwide is grey hydrogen, made from natural gas, which still generates carbon emissions.
Expanding renewable energy capacity and electrolyser manufacturing is expected to reduce costs in the coming years.
Limited Refuelling Infrastructure
Unlike petrol stations or electric railway lines, hydrogen refuelling stations are still relatively rare.
Every hydrogen-powered train requires:
Hydrogen production
Compression systems
High-pressure storage tanks
Dispensing equipment
Safety monitoring systems
Developing this infrastructure requires significant investment.
Storage Challenges
Hydrogen has excellent energy content by weight but occupies a large volume.
It must therefore be compressed to very high pressures or liquefied at extremely low temperatures, both of which require specialised equipment.
Common Myths About Hydrogen Trains
Myth 1: Hydrogen Trains Can Explode Easily
Fact: Modern hydrogen trains incorporate multiple safety systems, including leak detectors, flame sensors, automatic shut-off valves, continuous ventilation, and emergency control systems. They are designed to meet stringent international safety standards.
Myth 2: Hydrogen Is More Dangerous Than Diesel
Fact: Every fuel carries risks. Diesel is combustible and can contaminate soil and water if spilled. Hydrogen requires careful handling because it is highly flammable, but it also disperses rapidly into the atmosphere due to its low density. Proper engineering and monitoring are critical for both fuels.
Myth 3: Hydrogen Trains Produce No Pollution Anywhere
Fact: At the point of use, hydrogen fuel cells emit only water vapour and heat. However, the overall environmental impact depends on how the hydrogen is produced. Green hydrogen made using renewable electricity has a much lower carbon footprint than hydrogen produced from fossil fuels.
Myth 4: Hydrogen Will Replace Battery-Electric Vehicles
Fact: Hydrogen fuel cells and battery-electric systems are likely to complement each other. Batteries are well suited for passenger cars and short-distance travel, while hydrogen may be more practical for heavy vehicles, long-distance transport, ships, trains, and certain industrial applications.
Hydrogen Beyond Railways
Hydrogen technology is expanding across several sectors.
Today, it is being tested or deployed in:
Passenger cars
Heavy trucks
Public buses
Marine vessels
Mining equipment
Backup power systems
Aviation research
Steel manufacturing
Fertiliser production
India has already demonstrated hydrogen technology in maritime transport with its indigenous hydrogen fuel cell-powered catamaran ferry, showing that hydrogen could become an important fuel across multiple modes of transportation.
How Hydrogen Supports India's Net Zero Goals
India has committed to achieving Net Zero emissions by 2070 while expanding renewable energy capacity and reducing dependence on imported fossil fuels.
The hydrogen train aligns with these objectives by:
Promoting cleaner transportation
Encouraging domestic green hydrogen production
Supporting renewable energy integration
Reducing greenhouse gas emissions
Building indigenous expertise in hydrogen technologies
Creating new opportunities for clean energy manufacturing
The project also complements the National Green Hydrogen Mission, which seeks to establish India as a global hub for the production, utilisation, and export of green hydrogen.