Ohio Rev. Code § 4928.151
The public utilities commission shall adopt and enforce rules prescribing a uniform, statewide policy regarding electric transmission and distribution line extensions and requisite substations and related facilities that are requested by nonresidential customers of electric utilities, so that, on and after the effective date of the initial rules so adopted, all such utilities apply the same policies and charges to those customers. Initial rules shall be adopted not later than six months after the effective date of this section. The rules shall address the just and reasonable allocation to and utility recovery from the requesting customer or other customers of the utility of all costs of any such line extension and any requisite substation or related facility, including, but not limited to, the costs of necessary technical studies, operations and maintenance costs, and capital costs, including a return on capital costs.
R.C. § 4928.151