Evaluating the energy security implications of a carbon-constrained U.S. economy

Technology plays an important role in determining how energy is produced, delivered, and consumed. In the future, it is expected to play an equally important role in enabling society to secure
its energy system while reducing emissions of greenhouse gases (GHGs). But it is unclear what mix of technologies holds the greatest promise for simultaneously addressing climate change
and energy security. This paper examines eight scenarios for technological development and energy use in the United States in 2035. All envision limiting the atmospheric concentration of carbon dioxide (CO2) to 450 parts per million (ppm).