Idaho Statutes Title 63. Revenue and Taxation § 63-2701. Statement of electric generating companies--Tax

(1) In addition to the licenses and taxes now provided by law, each and every individual, firm, partnership, common law trust, corporation, association or other organization, now engaged or hereafter to engage in the generation, manufacture or production of electricity and electrical energy in the state of Idaho, through and by means of water power, for barter, sale, or exchange, and hereinafter referred to as the “producer,” shall on or before the last day of each calendar month, render a statement to the state tax commission of the state of Idaho of all such electricity and electrical energy so generated, manufactured or produced by him or it in the state of Idaho, during the preceding calendar month and therewith pay a license tax of one-half mill per kilowatt hour on all such electricity and electrical energy so generated, manufactured or produced, except electricity and electrical energy generated or sold for use in manufacturing, mining, milling, smelting, refining and processing, as shown on such statement in the manner and within the time hereinafter provided.

(2) The state tax commission may by regulation provide for the filing of statements required in this section on a quarterly basis, in which case the statement shall be due on or before the last day of the calendar month following the end of the quarter to which the statement relates.