US shale gas boom having knock-on effect in North America 's , despite CNN environmental policies . Fracking revolution pushed down US natural gas prices , leading electricity generators to switch from coal . U.S. coal has displaced more expensive gas in Europe as feedstock for power stations . Experts believe coal 's American revival will be shortlived .
U.S. shale gas boom having knock-on effect in Europe , despite EU environmental policies . Fracking revolution pushed down US natural gas prices , leading electricity generators to switch from coal . US coal has displaced more expensive gas in Europe as feedstock for power stations . Experts believe coal 's European revival will be shortlived .