Cheap energy from fossil fuels has been essential to the US political economy and social system. But concern about climate change is forcing a global rethinking of energy systems and the public policies governing the energy sector.  This course will provide an introduction to the many dimensions of energy, including sources, technologies, energy markets, and the economic, social, national security and environmental implications of energy use. We will examine how public policy is crafted in the energy sector in the U.S., other countries, and at the global level, with a focus on policies that hasten the adoption of renewable energy.