Okla. Stat. tit. 12, § 12-938
Attorney fees taxed as costs in certain actions relating
to public utilities.
In any civil action or proceeding to recover for the overpayment
of any charge for water, sanitary sewer, garbage, electric or
natural gas service from any person, firm or corporation, or to
determine the right of any person, firm or corporation to receive
any such service, the prevailing party shall be allowed a reasonable
attorney fee to be set by the court, to be taxed and collected as
costs.