Karsten Reuter‘s research concerns energy conversion and storage in the context of renewable energy technologies. Processes such as the photovoltaic generation of electric power, the storage in batteries or the conversion into chemical energy carriers such as hydrogen and synthetic fuels are currently either not efficient enough, or require rare or toxic materials and catalysts. The theorist specifically investigates the limiting steps in these processes at surfaces and interfaces, for which he develops modern multiscale modelling and simulation techniques. With the help of these techniques (and supercomputers) he is able to bridge many orders of magnitude and study these processes from the detailed elementary molecular reactions up to entire reactors and fuel cells.