Low-cost, clean energy represents an enormous economic opportunity as well as an environmental and national security imperative. To maintain high reliability, low, cost, and minimal environmental impacts requires major investments in advanced technology to deliver new solutions to market. Innovation in finance, business models, and policy is also important. Changing national and global markets as well as changing political dynamics have created an utterly new circumstance where  the cost, performance, and footprint of US energy infrastructure and the global markets they support can lead to dramatic improvements in climate risks, energy security, and economic performance.