Notwithstanding Section 377, a facility for the generation of electricity, or an interest in a facility for the generation of electricity, that is located outside of this state, is owned by a public utility that serves 60,000 or fewer customer accounts in this state, and is not necessary to serve that public utility’s customers in this state, may be disposed of upon approval of the commission pursuant to Section 851 or upon exemption by the commission pursuant to Section 853.