15 Pa.C.S. § 7358

Upon proceedings brought by an interested person or by action of the Pennsylvania Public Utility Commission, the commission shall have the jurisdiction to enforce compliance with this subchapter and shall have jurisdiction to prohibit the furnishing of retail electric service by any retail electric supplier except in its certified territory or territories or where lawfully serving and, in connection with the enforcement and prohibition, to exercise all powers granted by this subchapter or otherwise to the commission.