I’m pleased to announce the publication of our first book, edited by Dawn Bonnell of UPenn Nanoscience and Sergei Kalinin of Oak Ridge National Laboratory. It’s a comprehensive overview of the field of energy through the lens of scanning probe microscopy. SPM techniques offer the highest resolution achievable in real-space imaging, right down to the level of single atomic bonds. This book is all about how we can use these advanced techniques to investigate and improve the performance of renewable energy sources, such as solar cells, and energy storage devices, such as batteries and supercapacitors. Our contribution, Chapter 5, from Joe and from Jeff Guest in Argonne National Laboratory and Chris Giebink in Pennsylvania State University, deals with molecular heterojunctions (such as the pinwheels) and their investigation via scanning tunneling microscopy (STM).