Fracking techniques perfected in the U.S. shale patch could help drill for deeper and hotter geothermal energy resources and slash geothermal costs to make this low-carbon energy source competitive to other clean energy solutions, the International Energy Agency (IEA) said on Friday. Recent advances in horizontal drilling and hydraulic fracturing, “honed through oil and gas developments in North America,” are now opening a new potential for global geothermal energy, the agency said in its report ‘The Future of Geothermal Energy’.…