In any case in which an authority, having an established record of net earnings available for payment of principal and interest equal to estimated requirements for that purpose according to the terms of the issue, issues additional evidences of indebtedness for the purposes of acquiring or constructing additional facilities of the same general character that it is then operating, such additional evidences of indebtedness shall be governed fully by the provisions of this section without limitation.
The term "public utility operating company" as used in this subdivision and subdivision 16 means a public utility or public service corporation (i) of whose total income available for fixed charges for the fiscal year next preceding the making of such investment at least 55 percent thereof shall have been derived from direct payments by customers for service rendered them; (ii) of whose total operating revenue for the fiscal year next preceding the making of such investment at least 60 percent thereof shall have been derived from the sale of electric power, gas, water, or telephone service and not more than 10 percent thereof shall have been derived from traction operations; and (iii) whose gas properties are all within the limits of one state, if more than 20 percent of its total operating revenues are derived from gas.
Va. Code § 2.2-4519