Network Rail is providing coffee waste from its stations to be used as fuel.
Its new project at six major railway stations follows the successful completion of trials at London Victoria and Waterloo.
The scheme will now also run at Euston, King’s Cross, Liverpool Street and Paddington.
Green energy company bio-bean will convert around 700 tonnes of coffee waste generated from these stations every year into fuel, diverting it away from landfill.
Its facility will produce more than 650 tonnes of carbon-neutral biofuel, heating homes, offices and factories.
The company expects one tonne of coffee waste to generate more than 5,700KWh of energy.
David Biggs, Network Rail Property Managing Director, said: “It’s good news our stations are cutting their carbon footprint while also saving passengers and taxpayers money.
“The new solution is cheaper than sending the waste to landfill, which means we can invest more in making the railway better for the four million people who travel by rail each day.”