Sec. 7. (a) The commission may issue subpoenas and order discovery as provided by this section in aid of investigations and hearings under this article.
(b) Subpoenas and discovery in aid of investigations may be ordered to the same extent and are subject to the same limitations as subpoenas and discovery in a civil action in a circuit court. Subpoenas and discovery in aid of hearings are subject to IC 4-21.5.