Coalition of Cities for Affordable Utility Rates. Petitioners v. Public Utility Commission of Texas, Et…

Summary

The Texas Supreme Court held that res judicata and collateral estoppel bar a public utility from relitigating the prudence of previously adjudicated investment costs in a rate‑making proceeding, reversing the Court of Appeals and affirming the trial court. A dissent argued the Commission’s partial determination should not invoke preclusion doctrines.