The statement Water is the coal of the future, which was made in 1874. in Jules Verne’s novel The Mysterious Island, seemed irrational until recently. Hydrogen is now poised to become the world’s main energy fuel in the coming years. The hydrogen-related buoyancy, meanwhile, is translating into new hydrogen power plants popping up like mushrooms in Europe. Just in the past few days, two more have been launched in Hungary and Austria.