Kolkata Metro Uses Regenerative Braking to Cut Emissions

Imagine trains that can generate their own electricity when they slow down!

That's what the Kolkata Metro is doing.

They use a special system called regenerative braking that captures the energy normally lost when a train stops and turns it back into electricity.

This saves money and helps the environment by reducing the use of fossil fuels.

The metro has already saved a lot of money and reduced pollution.

They are also building a big battery system to store extra energy, which is a first for Indian Railways.