Developers targeted 2013 to begin operating a new power plant fueled by the carbon-rich leftover from nearby oil refining in Corpus Christi. The Las Brisas Energy Center will not be ready by then, however, and there are doubts the project will be built at all, making it the latest flash point in a long fight between Texas and the Environmental Protection Agency. The $3 billion project has stalled as the federal government pushes to limit emissions of carbon dioxide and other gases linked to global warming from new power plants. The first-ever rules are expected to bring an end to...