An authority created under the provisions of this chapter is hereby vested with the power of eminent domain and the same authority to exercise the power of eminent domain as is granted in Chapter 2 (§ 25.1-200 et seq.) of Title 25.1 and as is granted in Chapter 3 (§ 25.1-300 et seq.) of Title 25.1, subject to the provisions of § 25.1-102, provided that this power shall not be used to acquire existing power supply facilities or plants held for future use. Furthermore, no authority may condemn property outside of the territorial limits of its member governmental units without obtaining the consent of the governing body of the locality in which such property is located; however, in any case in which the approval by such locality is withheld, the authority seeking such approval may petition for the convening of a special court, pursuant to §§ 15.2-2135 through 15.2-2141.