Indian Railways has operationalised the nation's first liquefied natural gas (LNG)-diesel dual-fuel Diesel Electric Multiple Unit (DEMU) train at Sabarmati in Ahmedabad after INOX India Limited (INOXCVA) supplied specialised cryogenic systems. The supplier delivered 2,200-litre LNG receiving, storage and regasification systems for integration with 1,400 horsepower (HP) driving power cars (DPUs) in the dual-fuel DEMU configuration. The initiative follows planned trials and certifications undertaken by the rail operator and its divisions and represents a practical test of cleaner fuel pathways for passenger services.

The commissioned systems are engineered to enable continuous dual-fuel operation with LNG and diesel while preserving engine performance and operational reliability. The technology is intended to permit substitution of diesel by up to 40 per cent, improving fuel efficiency and reducing greenhouse gas and particulate emissions on short and medium-distance routes. The systems are presented as compatible with existing maintenance practices and operational requirements for DEMU fleets deployed across diverse regional services.

The dual-fuel programme was conceived by the Alternative Fuels Division of Indian Railways to convert an initial batch of 10 driving power cars to a hybrid model running on LNG alongside diesel. INOXCVA previously delivered two units that underwent extensive trials and certification in the Sabarmati Division and demonstrated operational viability and safety compliance. Following those assessments, the rail operator has indicated readiness to induct further units and the supplier is prepared to fulfil deliveries under its contract.

The deployment is described as an important step towards energy-efficient, low-emission rail mobility that can enhance operational efficiency and long-term sustainability of passenger services. Company executives characterised LNG as a transition fuel that can reduce diesel dependence and signalled continued research and development toward liquid hydrogen as a potential future zero-emission option. The project reinforces the supplier's position in cryogenic technology solutions and aligns with national clean mobility objectives.