Discuss the significance of hydrogen fuel cell technology for decarbonising India's railway network. Examine challenges in scaling it beyond pilot projects.

Q. Discuss the significance of hydrogen fuel cell technology for decarbonising India's railway network. Examine challenges in scaling it beyond pilot projects. (15 marks, 250 words)

Indian Railways, targeting net-zero carbon emission by 2030, still runs substantial diesel traction on non-electrified and heritage routes. Hydrogen fuel cell trains—whose only by-product is water vapour—offer a clean-traction bridge, exemplified by India's first indigenous hydrogen train flagged off on the Jind–Sonipat section [1].

Significance for decarbonisation - Zero tailpipe emissions: fuel cells generate power via a hydrogen-oxygen reaction, emitting only water vapour, cutting diesel's carbon and particulate load [1]. - Green-mobility ecosystem: paired with an electrolysis-based green hydrogen plant at Jind, it links rail transport to the National Green Hydrogen Mission (5 MMT target by 2030) [2][5]. - Indigenous capability: a 1200 KW, 10-coach Make-in-India trainset demonstrates domestic propulsion technology, reducing import dependence [2]. - Last-mile clean traction: viable for hilly, heritage and narrow-gauge lines where full electrification is costly—hence "Hydrogen for Heritage", targeting 35 trains [4].

Challenges in scaling - Cost: green hydrogen remains expensive; refuelling and storage infrastructure demand heavy capital via IROAF-led projects [3]. - Safety & storage: high-pressure hydrogen handling needs strict protocols and skilled manpower. - Efficiency gap: fuel-cell trains carry lower speeds (~75 kmph) versus electrified corridors [2]. - Supply constraints: limited electrolyser capacity and renewable-powered production restrict fleet expansion.

Hydrogen traction complements—not replaces—electrification, best deployed on hard-to-electrify routes. Scaling it demands cost reduction through Mission-linked incentives, safety standardisation and green-hydrogen supply security, advancing India's Net Zero 2070 and cooperative climate commitments.

(~250 words)

Sources: 1. PM to visit Haryana, Chandigarh and Punjab on 17th July, PIB — Jind–Sonipat hydrogen train flag-off, water-vapour by-product 2. Manufacturing of India's First Hydrogen-Powered Train-Set Completed; Green Hydrogen Plant at Jind, PIB — 1200 KW, 10-coach specs, ~75 kmph, Jind electrolysis plant 3. IROAF invites bids for Hydrogen Fuel Cell based Train, PIB — nodal agency, infrastructure/cost dimension 4. Indian Railways to run 35 Hydrogen trains under "Hydrogen for Heritage", PIB — heritage/narrow-gauge deployment, 35-train target 5. National Green Hydrogen Mission — 5 MMT annual production by 2030, PIB — parent mission, low-carbon transition