Indiana Code Title 8. Utilities and Transportation § 8-1-13-38

Sec. 38. (a) Any corporation may make complaint as to any matter affecting its own rates or service.  The corporation shall publish a notice of the filing of the petition or complaint in a newspaper of general circulation published in any county in which the corporation renders service.  An order affecting rates or service may be entered by the commission without a formal public hearing, if the corporation has obtained written consent to obtain an order affecting its rates from the commission without a formal hearing from any agency of the federal government with which the corporation has outstanding evidence of indebtedness to the federal government.  The commission may, however, on its own motion require a formal public hearing, and shall, upon a motion filed by the utility consumer counselor, by any public or municipal corporation, by ten (10) individuals, firms, corporations, limited liability companies, or associations, or by ten (10) complainants of any or all of these classes, hold a formal public hearing with respect to any petition or complaint.

(b) In any general rate proceeding under subsection (a) which requires a public hearing and in which an increase in revenues is sought which exceeds the sum of two million five hundred thousand dollars ($2,500,000), the commission shall conduct at least one (1) public hearing in one (1) of the following, as determined by the commission: