Energy-intensive industries ecosystem : electrolysers

Electrolysers are defined by the EU as devices that use electricity to split water into hydrogen and oxygen. This process is a key component in the production of renewable hydrogen, which the EU emphasises should be produced from renewable energy sources to ensure at least 70% greenhouse gas emissions savings compared to conventional hydrogen production methods. Electrolysers thus offer a solution for significant CO2 emitters to mitigate their carbon dioxide emissions through a process known as "electrolytic carbon capture and utilisation" (eCCU). There are different electrolysis technologies, with alkaline electrolysis, proton exchange, membrane (PEM) electrolysis, and solid oxide electrolysis cells (SOECs) prominent ones.