All electricity and electrical energy used for pumping water for irrigation purposes to be used on lands in the state of Idaho or for pumping water for drainage purposes on or from land in the state of Idaho is exempt from the provisions of this chapter, except in cases where the water so pumped is sold or rented to such irrigated lands: provided, the exemption here given shall accrue to the benefit of the consumer of such electricity or electrical energy: provided further, that the full amount of such license tax which would have been due from such producers of electricity and electrical energy, if such exemptions had not been made, shall be credited annually for the year in which the exemptions are made on the power bill to the consumer by the producer of such electricity and electrical energy, furnishing such power, and such producer shall include a statement of the amount of electricity and electrical energy exempted by this section, furnished by it for the purpose of pumping water for irrigation purposes on lands in the state of Idaho, or for the purpose of pumping water for drainage purposes on or from lands in the state of Idaho to the tax commission of the state of Idaho as a part of the statement required by section 63-2701[, Idaho Code,], together with a statement of the credits made on the power bills to the consumers of such electricity and electrical energy for the pumping of water for irrigation to be used on lands in the state of Idaho, or for pumping water for drainage purposes on or from lands in the state of Idaho.