Critics of the hydrogen train project raise concerns regarding the high costs and technical hurdles associated with this technology. While the environmental benefits of hydrogen are clear, the current economic reality is more complex. Producing green hydrogen—which requires renewable energy and electrolysis—remains expensive compared to traditional electricity or diesel. Skeptics argue that without significant subsidies and a massive drop in production costs, hydrogen trains may struggle to become a cost-effective alternative for the average passenger.
Another point of contention is the infrastructure required to support a hydrogen-based network. Unlike electric trains that draw power from an established grid, hydrogen trains require specialized refueling stations, storage facilities, and a complex supply chain to transport fuel safely. Critics warn that the capital expenditure needed to build this infrastructure across India could divert funds from more immediate needs, such as improving track safety, increasing train frequency, or upgrading existing passenger amenities.
There is also the question of energy efficiency. Converting electricity into hydrogen and then back into electricity via fuel cells results in significant energy loss compared to direct electrification. Some experts suggest that resources might be better spent on accelerating the electrification of the remaining rail network, which is a proven, highly efficient technology. They caution that the focus on hydrogen could be a distraction from more practical, immediate solutions that could yield faster results for the public.
Finally, the long-term maintenance and safety of hydrogen storage systems in a high-density environment like Indian Railways remain a concern for some observers. As the project moves beyond the pilot phase, the government will need to provide transparent data on operational costs and safety protocols. Until these questions are addressed, many remain skeptical about whether hydrogen can truly replace diesel on a national scale without placing an undue financial burden on the state and the taxpayer.