For the first time in U.S. history, renewable energies briefly generated more electricity than coal in April this year, according to the Institute for Energy Economics and Financial Analysis. This development is significant for U.S. clean energy champions, environmental advocates, and a coal industry that has anchored U.S. energy for much of the 20th Century. Renewable energy potential merits review of trends and evolving dynamics in a dramatically changing U.S. energy sector.
New innovations and technologies, including large-scale shale extraction, have led to an abundance of domestic oil and gas. The cheap price of