With its goal to produce up to a million tonnes of renewable hydrogen from as much as 10GW of offshore wind power, AquaVentus is among the most ambitious green hydrogen projects in the world.

And with more than 60 companies and organisations from all parts of the hydrogen supply chain already on board, backers of the plan focused on the German North Sea island of Heligoland hope it is also among the most likely projects to actually take off in practice, thanks to Germany's and the EU's determination to rapidly ramp up a green hydrogen economy.