Solar energy has risen from a curiosity with limited applications to a set of technologies that may be on the threshold of large scale deployment. While most of my interest lies in photovoltaics, heat collection and transfer systems have been widely deployed for a variety of applications as well. This page will provide links to a variety of interesting solar energy applications and experiments, including a few of my own. If you have any suggestions for this page, please send them to rtc@columbia.edu.