Underground salt caverns in Europe could provide up to 84,800 TWh of hydrogen storage, according to researchers in Germany, who claim that swathes of the gas could be injected into bedded salt deposits and salt domes. The study at the Julich Institute for Energy and Climate Research assessed both onshore and offshore salt caverns, with volumes of between 500,000 and 750,000 cubic-meters, according to site-specific thermodynamic factors. In layman’s terms, they aimed to prove that hydrogen wouldn’t leak from the caverns, and to describe the conditions needed for this to be the case. With the ‘hydrogen economy’ receiving a huge boost in the EU’s green stimulus package through Covid-19, it’s tipped that green hydrogen will reach both scale and cost-parity…