The amount of such exemption or reduction by the state tax commission shall be as nearly as practicable, such as would yield the amount of property taxes included in the rates of such utility under the tariff schedule(s) applicable to the furnishing of such electricity or gas.
To receive the benefit of the exemption under section 63-602O, Idaho Code, and this section, each consumer who is not a customer of the deliverer of electrical power or gas energy must file an application with the state tax commission on or before April 30 each year except that for the year 1993, only such application may be filed on or before June 15. The state tax commission shall prescribe by rule the form and information necessary for such application.
On or before the fifteenth day of November each year, the tax collector of each county shall transmit to the state tax commission, duplicate tax statements of each utility, showing the property taxes payable by such utility in his county. The state tax commission shall as soon as practicable thereafter, certify to each utility, the aggregate saving in property taxes effected in the several counties to each utility by reason of this exemption. On or before the fifteenth day of December of each year, each utility shall file with the state tax commission of Idaho, a statement showing the revenues which were or are to be collected from each irrigation or drainage pumping consumer, and the ratio between the aggregate savings in property taxes certified to it by the state tax commission and the aggregate revenues which were or are to be collected from these consumers. The utility shall determine the credit to which each consumer is entitled by virtue of this exemption and shall certify to the state tax commission that it has refunded or credited against the consumer's bills, the amounts due each consumer. This refund or credit shall equal each consumer's bill for the year multiplied by the ratio calculated pursuant to the provisions of this paragraph. The public utilities commission shall have jurisdiction under the public utilities law to insure utility compliance with the provisions of this statute.
Idaho Code § 63-603