As renewable energy powers up in South Korea, coal-fired generation, long the bedrock of the country’s electricity supply, is being tapped to give up room.  Facing choking smog in its major cities and under pressure to meet emission reduction targets, the world’s fourth-biggest coal importer is expected to accelerate targets for green energy in an updated 15-year energy plan later this year. Long seen as a laggard with Japan in moving away from coal, the government now looks set to close some 20 aging coal-fired generators and broaden operating caps at others, say advisers and energy experts. “We have a big challenge ahead to reduce carbon emissions. To some degree, we could do it by expanding renewable power but that won’t be enough to cut […]