Yara International has revealed plans to produce 500,000 tonnes per year of green ammonia at a plant in Norway.

The Norwegian fertiliser producer and shipowner is aiming to "power" emission-free shipping fuels at the facility in Porsgrunn.

Hydrogen constitutes 17.65% of the mass of ammonia, which does not require cooling to extreme temperatures and has a higher energy density than liquid hydrogen, making it more efficient to transport and store.