(220 ILCS 30/10.5) (from Ch. 111 2/3, par. 410.5)
    Sec. 10.5. Audit of returns.
    All returns submitted to the Commission by an electric supplier as provided in this Section or Section 10.4 shall be sworn to by an appropriate officer of the electric supplier. The Commission may audit each such return submitted and may take such measures as are necessary to ascertain the correctness of the returns submitted. The Commission has the power to direct the filing of an amended return by an electric supplier which has filed an incorrect return and to direct the filing of a return by any electric supplier which has failed to submit a return.
(Source: Laws 1967, p. 659.)