Notwithstanding Section 130232, the commission may direct the purchase of any supply, equipment, or material without observance of any provision in this article regarding contracts, bids, advertisement, or notice upon a finding by two-thirds of all members of the commission that there is only a single source of procurement therefor and that the purchase is for the sole purpose of duplicating or replacing supply, equipment, or material already in use.
Ca. Pub. Util. Code § 130237