Idaho Code § 18-6804
It shall be unlawful for any person within the state of Idaho to set fire, wilfully or maliciously, that shall result in the destruction or injury of any line erected or constructed for the transmission of electrical current, or any poles, conduits, cables, wires, insulators or any support upon which wires or cables may be suspended, or any part of any such line or appurtenances or apparatus connected therewith, or any house, shop, building or other structure, or appurtenances thereto, or machinery connected therewith, or necessary to the use of, any line erected or constructed for the transmission of electrical current, or to set fire that shall in any manner interrupt the transmission of electrical current along such line.
Idaho Code § 18-6804