Hydrogen has the potential to be an important clean fuel source in the future. It is a versatile fuel that can be used to generate electricity, power vehicles, and heat buildings, among other applications. One of the challenges to the widespread adoption of hydrogen as a fuel is its high cost, but there are several ways that it could become cheaper in the future. For example, advances in technology could lead to more efficient methods of producing hydrogen, such as using renewable energy sources to split water into hydrogen and oxygen. In addition, economies of scale could bring down the cost of hydrogen production as the demand for the fuel increases. Finally, the development of new infrastructure, such as hydrogen refuelling stations, could make it more convenient to use hydrogen fuel, which could in turn drive down its cost.