(

a) The department shall, and in any obligation entered into pursuant to this division may covenant to, at least annually, and more frequently as required, establish and revise revenue requirements sufficient, together with any moneys deposited into the fund, to provide all of the following:

(1) The amounts necessary to pay the principal of, and premium, if any, and interest on, all bonds as and when the same shall become due.

(2) The amounts necessary to pay for electricity purchased by it and to deliver it to purchasers, including the cost of electricity, transmission, scheduling, and other related expenses incurred by the department, or to make payments under any other contracts, agreements, or obligations entered into by it pursuant to this division, in the amounts and at the times the same shall become due.

(3) Reserves in amount as may be determined by the department from time to time to be necessary or desirable.

(4) The pooled money investment rate on funds advanced for electricity purchases before the receipt of payment for those purchases by the purchasing entity.

(5) The administrative costs of the department and other state agencies, including the costs and fees for professional services, bond issuance and sale, and other miscellaneous costs, incurred in connection with the issuance of bonds or the administration of this division. (

b) The department shall notify the commission of its revenue requirement pursuant to the agreement required pursuant to

Section and that revenue requirement shall be satisfied by the recovery of its costs through a nonbypassable charge.