Indiana Code Title 8. Utilities and Transportation § 8-1-13-31

Sec. 31. (a) The commission may require, by order or subpoena, a corporation to produce within the state (at a time and place the commission may designate) any books, accounts, papers, or records (or verified copies) kept by the corporation anywhere, to allow an examination to be made by the commission or under its direction.

(b) The order or subpoena shall be served on the corporation in the same manner as a summons is served in a civil action.

(c) Any corporation that does not comply (after reasonable written notice) with any order or subpoena shall be assessed a civil penalty of not less than fifty dollars ($50) and not more than five hundred dollars ($500) for each day that it does not comply.  Any penalty assessed under this subsection shall be deposited in the state general fund.