Solar fuels and electrofuels

Our need for renewable fuels and flexible energy storage is increasing as we seek to move away from fossil fuels. This need could be met by the production of fuels from abundant resources such as water and carbon dioxide either using renewable electricity or by directly harnessing solar energy. However, challenges remain with respect to designing low cost and efficient catalysts and light harvesters, as well as constructing systems that could work at scale. Here, we assemble expert reviews and opinions, alongside some of our favourite research published in Nature Energy over the past year, that address this complex task.