This graduate seminar reviews various energy conversion and storage technologies, and decision models for investors, policy-makers, and engineers. The merits of alternative technologies will be debated based on their environmental performance and cost, and their potential improvement and scalability. Project teams will develop quantitative models and interactive visualization tools to inform the future development of these technologies. Models may probe how the impact of a technology depends on assumptions about future advancements in materials or device design. Other projects may develop models for rational design choices (the selection of a particular material or processing technique) based on economic and environmental performance and physical constraints.