Pierce Butler, Tennessee Electric Power Company v…
“ They allege facts that unmistakably show that each has a valuable right as a public utility, non-exclusive though it is, to serve in territory covered by its franchise, and that, inevitably the value of its business and property used will suffer irreparable diminution by defendants' program and acts complained of. If, because of conflict with the Constitution, the Act does not authorize the enterprise formulated and being executed by defendants, then their conduct is unlawful and inflicts upon complainants direct and special injury of great consequence. ”
