Discuss the significance of hydrogen fuel cell technology in decarbonising India's transport sector, with reference to the Indian Railways' hydrogen trainset initiative.

Q. Discuss the significance of hydrogen fuel cell technology in decarbonising India's transport sector, with reference to the Indian Railways' hydrogen trainset initiative. (15 marks, 250 words)

Transport contributes a large share of India's energy-related emissions. Hydrogen fuel cells—generating onboard electricity from hydrogen with only water vapour as by-product—offer a zero-emission pathway, exemplified by India's first indigenous Hydrogen Fuel Cell Trainset flagged off on the Jind–Sonipat section in July 2026 [1].

Significance for decarbonisation - Environmental: near-zero point-of-use CO₂; operationalises the National Green Hydrogen Mission and the Net Zero 2070 goal, extending gains from railway electrification [1]. - Energy security: cuts imported-diesel dependence, easing forex outgo. - Reach beyond electrification: viable for un-electrified heritage/hill routes—the "Hydrogen for Heritage" plan envisages 35 trains (~₹80 cr/train) [2].

The trainset as proof of concept - Indigenous scale: 10-coach configuration (~2,600 passengers) exceeds the global 2–4 coach norm, showcasing Atmanirbhar rail-tech via ICF, RDSO and Medha [1]. - Ecosystem: India's largest railway hydrogen hub at Jind (~3,000 kg storage), cleared by PESO with TÜV SÜD certification—a replicable safety-plus-refuelling template [3].

Challenges - High capital cost (₹70 cr/route ground infrastructure) [2]. - Green hydrogen supply depends on electrolysis scaling at Jind [4]. - Storage/handling safety and round-trip energy losses versus direct electrification.

Hydrogen fuel cells thus complement—not replace—electrification, greening the "last mile" of hard-to-electrify routes. Scaled prudently alongside falling green-hydrogen costs, the Jind–Sonipat pilot can anchor India's clean-mobility transition and its climate commitments.

(~250 words)

Sources: 1. India's First Hydrogen Fuel Cell Train Set to Redefine Sustainable Rail Mobility (PIB, 2026) — configuration, capacity, water-vapour by-product, route, Net Zero linkage 2. Indian Railways to run 35 Hydrogen trains under "Hydrogen for Heritage" (PIB) — 35-train plan, ₹80 cr/train, ₹70 cr/route 3. Greener & More Energy Efficient; First Indigenous Hydrogen Train All Set to Start (PIB) — Jind hub, ~3,000 kg storage, PESO, TÜV SÜD 4. Manufacturing of India's First Hydrogen-Powered Train-Set Completed; Green Hydrogen Plant at Jind (PIB) — electrolysis-based green hydrogen production