The provisions of Sections 77-3-111 through 77-3-127 shall be deemed to be full and complete authority for the exercise of the powers therein granted. It is the intent of the Legislature that the authority provided under Sections 77-3-111 through 77-3-127 be limited to the implementation of alternate financing arrangements that may be contemplated by any agreement entered into by the Public Service Commission and the affected electric public utility relating to any qualifying facility as defined in Section 77-3-111.