"But if the political deck seemed stacked against the Sierra Club, Henry held the economic cards. In Oklahoma, coal imported from Wyoming now costs more per kilowatt hour than the abundant gas under the ground or the wind that famously comes sweeping down the plain. In another recent haze case, the Sierra Club cut a deal requiring Oklahoma’s other major utility to phase out its only coal plant and buy 200 megawatts of wind—and the bids came in so low, the utility ended up buying 600 megawatts of wind. That’s why Walmart, the hospital group and the coalition of industrial ratepayers all supported Beyond Coal’s push for more wind in the OG&E case. Cheap electricity has a way of scrambling political alliances."