Each of these storage methods has its own advantages and disadvantages, and the optimal solution will depend on the specific application. https://carsinspections.com/car-interior/carhartt-car-interior-the-ultimate-guide-to-protecting-your-vehicle/ Solid oxide fuel cells (SOFCs): SOFCs operate at high temperatures (500-1000В°C) and can use a variety of fuels, including hydrogen, natural gas, and biogas. They are highly efficient but require more time to warm up. Coal gasification: Coal gasification is a process that converts coal into a gas mixture containing hydrogen, carbon monoxide, and other gases. The hydrogen can then be separated from the gas mixture.