Currently, biological machineries including proteins, enzymes and whole cells are being integrated with synthetic materials for (solar) energy conversion, from fuel production to power generation. One of the key challenges for success in this rapidly growing field is to control the bio-material interface to enhance the complex charge/energy exchange processes which often form the bottleneck of the overall conversion process. This highly interdisciplinary conference showcases advanced techniques to characterise, design and synthesise the bio-material interface, and provides a forum for biologists, material scientists, electrochemists, and spectroscopists, to share ideas for tackling this challenge.