Catalysts are materials that can affect chemical reactions without themselves being changed. Widely used in many industrial processes, catalysts are critical to future energy technologies such as artificial photosynthesis, creating cleaner fuels and building better, more efficient batteries for energy storage. Combining expertise in theory, modeling and simulation, with access to powerful tools for materials characterization such as SLAC's Linac Coherent Light Source and Stanford Synchrotron Radiation Lightsource, researchers at SUNCAT are at the forefront of energy research. SUNCAT scientists conduct research critical the understanding of how to generate fuels directly from sunlight. Should this goal be achieved - a daunting challenge, but not an insurmountable one - replacing fossil fuels with fuels generated from sunlight would have a tremendous impact on the energy infrastructure and global climate of the future.