(a) North Carolina members of the Southern States Energy Board shall be appointed as follows:
(1) One member to be appointed by the Governor.
(2) One member of the House of Representatives to be appointed by the Speaker of the House of Representatives.
(3) One member of the Senate to be appointed by the President Pro Tempore of the Senate.
(b) Members shall serve at the pleasure of the original appointing authority and until their successors are appointed.
(c) Each appointing authority is authorized to appoint an alternate member who may serve at and for such time as the regular member shall designate and shall have the same power and authority as the regular member when so serving.