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In a bid to make rail travel greener, Indian Railways has developed a solar-assisted passenger coach that uses rooftop solar panels to power essential onboard amenities such as lights, fans and mobile charging points. It’s a very cool and environmentally-positive move. According to a TOI report, the pilot project has been developed by the North Central Railway (NCR) in Prayagraj. It is expected to serve as a model for future energy-efficient passenger coaches nationwide. The innovation is part of Indian Railways' broader sustainability strategy, which focuses on reducing carbon emissions, improving energy efficiency and increasing the use of renewable energy across its operations.

Understanding solar-assisted coach

The newly developed coach has been equipped with high-efficiency rooftop solar photovoltaic (PV) panels. It can generate nearly 7 kWp. Instead of replacing the existing electrical system, the solar installation works alongside it by supplying clean electricity to charge the coach's battery bank.

• These batteries, now provide power for:

Interior lighting
Ceiling fans
Mobile charging sockets

How is it different from traditional railway coaches

All traditional coaches get electrical power through an axle-driven alternator which is mechanically connected to the axle through a belt arrangement. But it generates electricity only while the train is moving.

On the other hand, the solar-assisted coaches will generate electricity directly from sunlight. No dependency on train movement

This is a major plus. The solar panels will continue generating electricity even when the train is parked at a station or a yard in sunlight. This allows the batteries to keep charging.

Benefits for passengers and Indian Railways


As per North Central Railway officials, the pilot project offers several operational and environmental benefits.

Since part of the electricity demand is met through solar power, the coach experiences lower dependence on the conventional charging system.

• This is expected to reduce mechanical wear
• Lower maintenance
• Improved lifespan of the battery bank
• Reduce its carbon footprint
• Pilot project under close monitoring

The development of the coach has been closely monitored by North Central Railway General Manager Naresh Pal Singh, who recently inspected the solar-assisted coach and reviewed its performance. He appreciated the work of the engineering and technical teams. Railway officials have described the project as an important experiment in improving the efficiency of passenger coaches.

What happens next?

At present, the solar-assisted coach remains a pilot project. However, if operational trials prove successful, Indian Railways could consider introducing similar technology across a larger number of passenger coaches in the future.