Ohio Revised Code Title XLIX. Public Utilities § 4906.222

(A) The performance bond for the decommissioning of a utility facility shall be updated every five years, based on the most recent estimates, as described in section 4906.212 of the Revised Code.

(B) If the costs of decommissioning are greater in the most recent estimate than the costs of the immediately preceding estimate, the performance bond shall be increased proportionately.

(C) If the costs of decommissioning are lower in the most recent estimate than the costs of the immediately preceding estimate, the performance bond shall not be decreased.