Chicago Tribune: The national push for more wind turbine-generated electricity could turn Illinois into a transmission hub. “Illinois is the crossroads. Historically, whether it’s rails, shipping, travel, O’Hare airport, it’s a geographical midpoint, or hub, positioned for all things moving west to east,” said Thomas O’Neill, chief operating officer at Chicago-based Exelon Transmission Co., a unit of Exelon Corp. But while regulators are paving the way for wind-farm development with tax credits …