According to the USGS U.S. Wind Turbine Database there are 58,449 turbines with a total rated capacity of 91,115 MW, providing 6.5 percent of US. Electrical energy. Estimating the average percentage of electricity per number of turbines to double that to achieve 13% electricity from wind would require an estimated 116,000 Wind Turbines, To provide 50% roughly 464,000 Wind … Continue reading This is what it looks like when renewable energy expands exponentially.