In addition to original research articles and letters, we will also publish perspectives, viewpoints, and reviews, providing authors with venues to describe and analyze a particular area of renewable energy science and its connection to photonics from their perspective. All submissions will be reviewed in an expedient manner, leading to rapid publication of accepted papers in electronic form. The e-journal format of JPE provides numerous advantages, including multimedia (video and audio) content, free full-color images, rapid review, and article-at-a-time publication. Individual manuscripts will be published online as soon as they are accepted. JPE also features copyediting and typesetting so authors are not responsible for final formatting. Complete author guidelines are available at spie.org/jpe.