A boom in shale-gas extraction, the technique that made the U.S. the top producer of the fuel, would complement growth in renewables because both curb use of dirtier commodities, the International Renewable Energy Agency said. “Gas in the first instance is going to displace coal,” Adnan Amin, director-general of the agency known as IRENA, said in an interview in Abu Dhabi. “Shale gas at low cost can help to create a hybrid system,” whereby more gas-fired power is fed to the grid, supplanting coal, and augmented by wind and solar. Countries are seeking to diversify their energy mix, cut imports and contain...
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