Cal. Pub. Util. Code § 825
All stock and every stock certificate or other evidence of interest or ownership, and every bond, note, or other evidence of indebtedness, of a public utility, issued without an order of the commission authorizing the issue thereof then in effect or not conforming in its provisions to any of the provisions which it is required by the order of authorization to contain, is void. No failure in any other respect to comply with the terms or conditions of the order of authorization of the commission shall render void any stock or stock certificate or other evidence of interest or ownership, or any bond, note, or other evidence of indebtedness, except as to a corporation or person taking it otherwise than in good faith and for value and without actual notice.
Ca. Pub. Util. Code § 825