The age of fossil-fuel abundance is dead

FOR MUCH of the past half-decade, the operative word in the energy sector was “abundance”. An industry that had long sought to ration the production of fossil fuels to keep prices high suddenly found itself swamped with oversupply, as America’s shale boom lowered the price of oil around the world and clean-energy sources, such as wind and solar, competed with other fuels used for power generation, such as coal and natural gas.