Ohio Rev. Code § 4909.154
In fixing the just, reasonable, and compensatory rates, joint rates, tolls, classifications, charges, or rentals to be observed and charged for service by any public utility, the public utilities commission shall consider the management policies, practices, and organization of the public utility. The commission shall require such public utility to supply information regarding its management policies, practices, and organization.
If the commission finds after a hearing that the management policies, practices, or organization of the public utility are inadequate, inefficient, or improper, the commission may recommend management policies, management practices, or an organizational structure to the public utility.
In any event, the public utilities commission shall not allow such operating and maintenance expenses of a public utility as are incurred by the utility through management policies or administrative practices that the commission considers imprudent.
R.C. § 4909.154