(a) Each electric membership corporation shall be operated without profit to its members; but the rates, fees, rents, or other charges for electric energy and any other facilities, supplies, equipment, or services furnished by the electric membership corporation shall be sufficient at all times:

(1) To cover all administrative and operating expenses and the costs of purchased capacity and energy as necessary or desirable for the prudent conduct of its business, and to cover the payments of the principal of and interest on the obligations issued or assumed by the electric membership corporation in the performance of the purposes for which it was organized; and

(2) To establish and maintain reasonable reserves.

(b) An electric membership corporation may also accumulate funds for future capital needs and for the purpose of establishing and maintaining a reasonable capital structure.

(c) The bylaws of an electric membership corporation shall contain provisions, consistent with subsection (a) of this Code section, for accounting for, allocating, assigning and disposing of its revenues and assets and may establish classes of members for such purposes.