Ind. Code § 8-1-2.7-15
(b) The commission shall revoke or limit the withdrawal from the jurisdiction of the commission of a utility if the lesser of:
(2) more than fifty percent (50%);
of the utility's customers file, individually or collectively, a verified petition with the commission and prove that the public interest requires the commission to revoke or limit the withdrawal from the jurisdiction of the commission.
As added by P.L.82-1997, SEC.18. Amended by P.L.159-1999, SEC.18.