India's clean energy pivot: The hydrogen train and the politics of progress

The train that runs on water vapour

On a muggy July morning, a train with a distinctive blue stripe rolled out of a shed in Chennai. It made no diesel clatter, no coal smoke. Only a low hum and a faint plume of water vapour from its exhaust. India had just launched its first hydrogen-powered train, built entirely within the country.

The Railways calls it a milestone on the path to net-zero emissions by 2030. For the passenger who will one day board it, the change is less visible but no less significant. The fuel cell that powers the train combines hydrogen with oxygen from the air. The only byproduct is water. No carbon dioxide, no particulates.

This is not a museum piece. The prototype is the first of 35 such trains the Railways plans to introduce on heritage and hill routes. The initial rollout will target sections where electrification is difficult or expensive — the Kalka-Shimla line, the Nilgiri Mountain Railway, the Matheran Hill Railway. These are the same routes where steam engines once laboured up gradients.

How we got here: A timeline of false starts and green ambition

India's flirtation with hydrogen as a fuel is not new. In 2021, the National Hydrogen Mission set a target of producing 5 million tonnes of green hydrogen annually by 2030. The Railways, which consumes about 2% of the nation's total energy, was an obvious candidate for pilot projects.

But the path was littered with delays. In 2023, the Railways floated a global tender for hydrogen fuel cell technology. German and French firms showed interest, but negotiations dragged. Then, in early 2025, the Integral Coach Factory in Chennai took the lead. Engineers reverse-engineered components, partnered with Indian fuel cell startups, and built a prototype from the ground up.

The successful trial run in July 2026 was a quiet victory for the 'Make in India' push. Officials say the train can run 1,000 km on a single fill of hydrogen, which takes about 15 minutes. The refuelling stations — themselves a complex engineering problem — are being set up at select depots.

This is where the global context matters. Germany and China have already deployed hydrogen trains on commercial routes. India is a late entrant, but it brings scale: the Indian Railways network is the fourth largest in the world, carrying 8 billion passengers a year. A successful hydrogen rollout here could shift the global market for fuel cell trains.

The key players: Who is driving this, and who is pushing back

The project is a joint effort between the Ministry of Railways, the Ministry of New and Renewable Energy, and a clutch of private firms. Indian Oil Corporation is setting up the hydrogen production and refuelling infrastructure. BHEL and Tata Motors have contributed fuel cell stacks and system integration.

But not everyone is cheering. On the same day the hydrogen train was launched, a very different kind of protest was unfolding at Jantar Mantar in Delhi. Sonam Wangchuk, the Ladakhi climate activist, was on a hunger strike demanding constitutional safeguards for his region's fragile ecology. His father had sat on a similar fast 42 years ago, meeting then-Prime Minister Indira Gandhi. This week, Sonia Gandhi urged Congress workers to support the cause.

The juxtaposition is telling. India's clean energy push, of which the hydrogen train is a part, often clashes with local realities. Ladakh, for instance, is seen as a potential site for large solar and wind farms to produce green hydrogen. But activists argue that large infrastructure projects threaten the region's biodiversity and traditional ways of life.

Then there is the high-speed rail project between Mumbai and Ahmedabad, which has been delayed for years. This week, a former Japanese minister publicly slammed India for 'sheer recklessness' in the project's sluggish progress. The Ministry of External Affairs hit back, citing land acquisition hurdles and pandemic-related disruptions. The lesson is clear: even flagship projects stumble on the ground.

The hydrogen train faces similar headwinds. Each refuelling station costs roughly ₹15 crore. The hydrogen itself, currently produced mostly from natural gas, is not yet 'green' at scale. Green hydrogen — made by splitting water using renewable electricity — costs about ₹350 per kg, compared to ₹130 per kg for grey hydrogen. Until that gap narrows, the environmental benefit is partial.

What it means for ordinary readers: The ticket, the air, the job

For the average passenger, the hydrogen train will not be an overnight revolution. The first routes are tourist-oriented. A ride on the Kalka-Shimla section, currently a diesel-hauled journey through 100-odd tunnels, could become quieter and cleaner. The fare may be slightly higher — Railways has not yet announced pricing, but premium services typically attract a surcharge.

The bigger impact will be on air quality in and around railway stations. Diesel locomotives, which still haul about 30% of passenger trains and a larger share of freight, are major sources of particulate matter and nitrogen oxides. Replacing them with hydrogen fuel cells could cut local pollution significantly, especially in congested urban stations like Howrah, Charbagh, and Chennai Central.

For the workforce, the shift is a double-edged sword. The Railways employs 1.2 million people. Diesel loco pilots and maintenance staff will need retraining. New jobs will open in fuel cell manufacturing, hydrogen handling, and station operations. But the transition will take years, and not everyone will make the cut.

For taxpayers, the cost is substantial. The Railways has allocated about ₹1,200 crore for the hydrogen train programme over the next five years. That is a fraction of the annual rail budget of ₹2.6 lakh crore, but it competes with other priorities: safety upgrades, track doubling, electrification of remaining routes.

And electrification itself is a question. The Railways has already electrified over 90% of its broad-gauge network. Some experts argue that instead of hydrogen, the focus should be on completing electrification and expanding battery-powered trains. Hydrogen makes sense only where overhead wires are impractical — tunnels, bridges, heritage zones. The Kalka-Shimla line, with its 100-year-old bridges and tight curves, is exactly such a case.

The week also saw a tragic reminder of how fragile India's transport safety is. In Murshidabad, West Bengal, a train collided with a school van, killing three children. The accident was not related to hydrogen or new technology. It was a level-crossing gate that was left open. No amount of green energy can substitute for basic infrastructure discipline.

The politics of progress

The hydrogen train launch was a media event. Photographers captured the blue-and-white rake gliding silently past a backdrop of officials in white shirts and khaki caps. But beneath the ceremony, the politics of energy transition are messy.

In Maharashtra, the Mahayuti alliance is wrangling over who gets credit for development. The NCP (SP) wants to join the NDA, but only as part of a 'unified NCP'. The BJP is playing hardball. In Ladakh, Wangchuk's fast has become a test of the government's willingness to accommodate regional demands within its green energy plans.

And beyond India's borders, the Gulf states are under Iranian fire as US strikes intensify. That matters for energy prices and for India's own push for energy independence. Hydrogen is not just a transport fuel; it is a geopolitical hedge. The less India depends on imported oil and gas, the more room it has to manoeuvre in a volatile world.

The hydrogen train is a symbol of that ambition. But symbols take time to become everyday realities.

What to watch next: The Railways will begin passenger trial runs on the Kalka-Shimla route by March 2027. If those go well, commercial operations on heritage routes could start by late 2027. The bigger test will be whether the technology can scale to mainline freight and long-distance passenger services. That depends on hydrogen costs dropping and refuelling infrastructure spreading. Watch the tenders for green hydrogen production — they will tell you if the economics are finally working.