In the context of decarbonising the economy through the accelerated deployment of Variable Renewable Energy Sources (VRES), hydrogen storage will play a critical role in integrating them, as well as contributing to the process of progressive sector integration. Sectoral integration or sector coupling refers to linking energy (electricity, gas and heat), transport and industrial infrastructures with a view to increase the penetration of renewable energy sources and decarbonise the economy. Hydrogen and its storage have the potential to make the energy transition faster and more cost-ef