Ohio Revised Code Title VII. Municipal Corporations § 743.28

(A) Where the legislative authority of a municipal corporation fixes the price at which a company shall furnish electricity or either natural or artificial gas to the citizens or to public buildings, or for the purpose of lighting the streets, alleys, avenues, wharves, landing places, public grounds, or other places, or for other purposes, for a period not exceeding ten years, and the company or person to furnish such utility assents thereto, by written acceptance, filed in the office of the auditor or clerk of the municipal corporation, the legislative authority may, for the purpose of exercising the rights of the municipal corporation under division (B) of this section, at any time during such period negotiate with the company a new contract establishing the one-price schedule provided for under division (B) of this section, provided said new contract will not take effect until the expiration of the existing contract and such new contract will remain in effect for the balance of the existing term of the new one-price schedule.

(B) Two or more municipal corporations may agree to negotiate one price schedule under which a gas, natural gas, or electric light company shall furnish its service to the residents of the municipal corporations so agreeing.  Such a schedule shall apply uniformly in such municipal corporations for a period no longer than ten years.  Upon written receipt of a joint notification by the mayors of a group of municipal corporations that they have each, by ordinance, expressed their intent to negotiate jointly, a gas, natural gas, or electric light company shall, within ninety days, commence joint negotiation of a price schedule with such municipal corporations.  Where such negotiation does not, within ninety days after its commencement, result in an agreement between the group of municipal corporations and the company, the group may exercise the rights of a municipal corporation under section 743.26 of the Revised Code on the same basis as if it were a single municipal corporation.