WASHINGTON — If there’s a War on Coal, it’s increasingly clear which side is winning. 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, according to a recent analysis by the U.S. Department of Energy. The remaining third was largely new power plants fueled by natural gas, which has become cheap and plentiful as a result of hydraulic fracturing. It was…