Mississippi wants deal that’d have plant fueled by gas only Southern has spent years constructing the Kemper coal plant A first-of-its-kind “clean coal” power plant that utility owner Southern Co. spent years constructing in Mississippi may end up burning no coal at all — and instead just run like a natural gas generator. After years of delays and billions of dollars in cost overruns, Mississippi regulators on Wednesday called on Southern to work up a deal that would have the Kemper plant fueled only by gas. The state Public Service Commission said in a statement that it’s looking for a solution that eliminates the risk to ratepayers “for unproven technology,” which involved converting coal into gas that could then be used to generate electricity — all while capturing emissions. Settling for gas only at Southern’s Kemper plant threatens to undermine the business rationale for the kind of clean-coal technology […]