In addition to the information required by § 67-5-1303, the schedules and statements submitted by electric light companies and electric cooperatives, not municipally owned, shall include:
(1) The number of miles of poles and wires of its entire system, the nature of its wire system and the number of miles inside and outside the corporate limits of the city or town in which its property is located;
(2) The total number of transformers owned by the company, their location and their value;
(3) The description and location of all of its property, real and personal; and
(4) The gross income of the company from its operation and from all other sources and its operating expenses, which operating expenses are to be set out in detail.