Powering America's Economy: Energy Innovation at the Crossroads of National Security Challenges explores the growing challenges presented by the links that tie the nation's current energy posture to its economy and national security. It looks at the potential opportunities that could result from the transition to a clean energy technology-based economy and the key role that the Department of Defense (DOD) can play to support innovation and commercialization of clean, low carbon energy, thereby directly contributing to America's future economic competitiveness and bolstering national security. Key questions addressed in this report: What are the key links between national security, energy, and the economy?; What are the national security challenges and benefits of developing a clean energy economy in the United States?; How can DOD contribute to America's economic and national security while addressing its own energy challenges?