There shall be within the Department an Economic Regulatory Administration to be headed by an Administrator, who shall be appointed by the President, by and with the advice and consent of the Senate, and who shall be compensated at a rate provided for level IV of the Executive Schedule under section 5315 of title 5. Such Administrator shall be, by demonstrated ability, background, training, or experience, an individual who is specially qualified to assess fairly the needs and concerns of all interests affected by Federal energy policy. The Secretary shall by rule provide for a separation of regulatory and enforcement functions assigned to, or vested in, the Administration.