As our energy and transport systems are being transformed, making increasing use of renewable sources of energy, hydrogen becomes much more important as a chemical storage medium for energy. Using renewable sources of energy to isolate hydrogen and putting it to work in fuel cells which convert its chemical energy into electricity ultra-efficiently may well contribute to achieving the ambitious goals of climate protection in the future. Current Austrian developments in hydrogen and fuel cell technology are opening up new opportunities for domestic firms in international markets, in the fields of sustainable energy supply, energy storage and non-polluting transport.