India launched its first hydrogen-powered train on the Jind-Sonipat route in Haryana on July 18 marking a visible milestone in the country’s green mobility push. The project part of broader efforts under the National Green Hydrogen Mission demonstrates real-world application of hydrogen technology in rail transport.
While the achievement is being celebrated in the rail sector it carries an important and largely unwritten cross-sector message for Indian aviation.
India is making tangible progress on hydrogen for rail at the same time its sustainable aviation fuel (SAF) roadmap remains stalled and fragmented. Globally major carriers are locking in multi-year SAF offtake agreements such as Delta’s recent five-year deal with Shell to secure supply and meet decarbonisation targets. India, despite ambitious green hydrogen production goals has yet to build a comparable domestic framework for SAF production or hydrogen applications in aviation.
This is not an either/or choice between rail and air. It is a question of prioritisation and sequencing within the same National Green Hydrogen Mission umbrella. Rail offers earlier, lower-hanging technical and regulatory fruit. Aviation with its stringent safety standards, global certification requirements, and higher energy density needs, is more complex. But the longer aviation waits for a coherent policy signal, the further India risks falling behind in a sector where SAF and hydrogen-electric regional aircraft are moving from pilot to commercial reality elsewhere.
MOSAIC (Modernization of Special Airworthiness Certification)
The timing is particularly relevant. The FAA’s MOSAIC rule (second phase effective July 24) is opening lighter certification pathways for hybrid-electric and electric propulsion in light-sport and regional aircraft in the US. India has its own ambitions in advanced air mobility and regional connectivity. A parallel policy push to support hydrogen or SAF for these smaller aircraft categories could accelerate local manufacturing, testing, and deployment especially in underserved routes where hydrogen-electric designs may have economic advantages.
Therefore, redirecting momentum from rail successes into aviation would require a clear production targets and incentives specifically for SAF and aviation-grade hydrogen. It would also require alignment between the Green Hydrogen Mission, the Ministry of Civil Aviation, and industry players (Air India, IndiGo, and emerging players). And, the regulatory sandboxes for hydrogen-electric test aircraft and early SAF blending mandates with offtake guarantees.
India is at the cusp of transformation. India is one of the world’s fastest-growing aviation markets. Its carriers are expanding international footprints aggressively. Without a credible domestic SAF and hydrogen pathway, the industry will remain exposed to volatile global fossil fuel prices and increasingly stringent international carbon rules (CORSIA and beyond).
The Jind-Sonipat hydrogen train is proof of concept. The real opportunity lies in using this momentum to build momentum for aviation. Rail is important. But aviation’s decarbonisation challenge is harder, more visible globally, and carries higher economic stakes for India’s connectivity ambitions.
The hydrogen train is running. Indian aviation policymakers should be watching closely and asking how soon a version of that technology can take to the skies.