Ind. Code § 8-1-2-50
The commission may require, by order or subpoena to be served on any public utility in the same manner that a summons is served in a civil action in the circuit court, the production, within the state, at such time and place as it may designate, of any books, accounts, papers, or records kept by said public utility in any office or place without the state of Indiana, or verified copies in lieu thereof, if the commission shall so order, in order that an examination thereof may be made by the commission or under its direction. Any public utility failing or refusing, after reasonable written notice, to comply with any such order or subpoena shall, for each day it shall so fail or refuse, forfeit and pay into the state treasury a sum of not less than fifty dollars ($50.00) nor more than five hundred dollars ($500.00).
IC 8-1-2-50