No person shall construct, extend, acquire or operate any physical facility or plant to be used, directly or indirectly, in the operation of a public utility except in compliance with the provisions of this rule and the Act.
A facilities certificate shall constitute the authority of a utility to begin the construction, acquisition or operation of additional physical facilities or plant to be used, directly or indirectly, for the provision of public utilities services for its existing certificated area.
A petition seeking a facilities certificate shall contain or be accompanied by the data and documentation shown in Schedule 3 of Appendix A.
A facilities certificate shall not be required except in the following instances:
39 Miss. Code. R. 1-7-102