(Invited) Hydrogen in an Integrated Energy System

The transformation of energy systems towards high shares of renewable energy production while phasing out the use of fossile carbon-based energy carriers requires both a highly resilient energy system and an energy carrier which couples the electricity sector with energy consuming sectors like transportation, industry and chemistry. This is why we now see the advent of large-scale water electrolyzers for the production of sustainable hydrogen. Hydrogen will be an important feedstock for fuel cell cars, busses, trucks and trains, but also an important basic chemical for refineries, for the steel production and for various kinds of sustainable chemicals like fertilizers or polymers. This talk will adress the status quo of electrolyzer technologies and techno-economic analyses of power-to-hydrogen plants with high shares of intermittent power supply. The whole value chain from sustainable power generation to the production of liquid energy carriers will be described. An overview of the research activities of the Fraunhofer institute for Solar Energy Systems (ISE) for the realization of an integrated and sustainable energy system will be given as well. Figure 1