Reuters: The U.S. Environmental Protection Agency can compare costs with benefits to determine the technology that must be used at power plant water-cooling structures, the Supreme Court ruled on Wednesday in a setback for those seeking greater protection for aquatic life. By a 6-3 vote, the high court handed a victory to the EPA, Entergy Corp, units of Public Service Enterprise Group Inc and the Utility Water Act Group, which consists of individual energy companies that operate power …