Ohio Rev. Code Ann. § 4929.25
(A) Upon the filing of an application by a natural gas company in such form and pursuant to such procedures as shall be prescribed by rule of the commission under section 4929.10 of the Revised Code for the purpose of this division, the commission shall determine the total allowable amount of capacity and commodity costs, and costs incidental thereto, of the company to be received as revenues under this division. Such amount shall be the just and reasonable costs of the company that the commission by order determines meet all of the following criteria: