I. The MPSC does not have the power to tax all customers of Consumers Energy to generate subsidies for renewable-energy production, since the Legislature authorized the creation only of an information campaign to promote the use of renewable energy.

A. Standard of Review

Generally, an MPSC determination regarding the scope of its authority is a question of law that is reviewed de novo. Consumers Power Co v Michigan Public Service Comm, 460 Mich 148, 157; 596 NW2d 126 (1999).