U.S. investment in renewable energy projects has outpaced investment in fossil fuels for the second straight year.
The U.S. Department of Energy says wind turbines and solar panels accounted for more than two-thirds of all new electric generation capacity added to the nation's grid in 2015. The remaining third was largely new power plants fueled by natural gas, which has become cheap and plentiful as a result of hydraulic fracturing, or fracking.
The states of GOP lawmakers who have fought to protect coal-fired power plants are actually benefiting from the shift to renewable energy. Leading the way in new wind projects are GOP strongholds Texas, Oklahoma and Kansas.
The cost of adding wind turbines has plummeted in recent years.
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