Renewing America's economy, responding to the threat of global climate change, and finally securing the nation's energy independence all compel the transformation of United States energy system. Accomplishing this transformation requires the rapid development and deployment of a suite of clean, affordable, and scalable energy technologies.
The challenge is this: Over the next four decades, global energy demand is expected to triple. But at the same time, global greenhouse gas emissions must fall rapidly, decreasing at least 50 to 85 percent by mid-century to avert potentially catastrophic climate change.
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