The sheer scale of the coming wave of green and blue hydrogen projects has been highlighted by analyst Rystad Energy, which says that the provision of services around H2 supply — ie, everything that does not involve buying and selling the clean gas — will be a $400 billion industry over the next 15 years.

Transport and infrastructure is forecast to be worth $130 billion between now and 2035, with facility construction spending of $120 billion and equipment costs of $70 billion.