Plants will be built in Norway, Germany and Belgium in the next 10 years with investment also planned in the UK and France.
Chemical giant Ineos is to invest around £1.69 billion in green hydrogen production.
The company said it will be Europe’s largest ever investment in electrolysis projects to make green hydrogen with the potential to “transform” zero carbon hydrogen production.
Ineos chairman Sir Jim Ratcliffe sa: “Green hydrogen represents one of our best chances to create a more sustainable and low carbon world.
“Europe is crying out for more investment in green hydrogen and Ineos’ announcement today shows our determination to play a leading role in this important new fuel.”
Ineos is developing projects in Belgium, France and the UK and expects to announce further partnerships with leading organisations involved in the development of new hydrogen applications.
The Ineos hydrogen business will have its headquarters in the UK and aims to build capacity to produce hydrogen across its network of sites in Europe, in addition to partner sites where hydrogen can accelerate decarbonisation of energy.
The company added that it intends to work closely with European Governments to ensure the necessary infrastructure is put in place to facilitate hydrogen’s role in the new green economy.