Dow Jones: The U.S. utility industry is gearing up for a fight over who receives the revenue generated under a plan that would bring about sharp reductions in greenhouse-gas emissions by raising energy prices. U.S. President Barack Obama and Democratic leaders in Congress want to set nationwide emissions limits and require companies to buy allowances conferring the right to pollute up to the limit, or cap. The White House last month estimated that a climate-change law could generate $646 billion …