If the municipality does not ratify such agreement for the purchase in the manner provided in section 2908 of this title or if the price cannot be agreed upon or if it cannot be agreed as to how much, if any, of such plant and property lying outside such municipality the public interest requires such municipality to purchase, either the municipality or the utility may petition the Commission for a determination of these questions. The Commission, after proper notice and hearing, shall decide the amount of just compensation and any other matters in dispute, and shall also, when required to fix the price to be paid for such plant and property, determine the amount of damages, if any, caused by the severance of the plant and property proposed to be purchased from the other plant and property of the utility. The Commission shall make its determinations on or before 12 months after the filing of the petition. The Commission may extend the time for determination an additional six months upon agreement of all of the parties or, absent such an agreement, upon a finding by the Commission, after notice and hearing, that such an extension is necessary to prevent injustice to one or more of the parties. From such determinations, there shall be the right of appeal to the Supreme Court on all matters involved as provided in chapter 1 of this title. (Amended 1959, No. 329 (Adj. Sess.), § 39(b), eff. March 1, 1961; 2003, No. 121 (Adj. Sess.), § 99, eff. June 8, 2004.)