The SUNCAT Center for Interface Science and Catalysis is a partnership between Stanford School of Engineering and SLAC National Accelerator Laboratory. The Center explores challenges associated with the atomic-scale design of catalysts for chemical transformations of interest for energy conversion and storage. By combining experimental and theoretical methods the aim is to develop a quantitative description of chemical processes atthe solid-gas and solid-liquid interface. The goal is to identify the factors controlling the catalytic properties of solid surfaces and use these to tailor new catalysts. Our approach is to integrate electronic structure theory and kinetic modeling with operando and in-situ characterization techniques, synthesis of alloys, compounds, and functional nanostructures, and finally testing under realistic process conditions.