(a) Whenever, with respect to any action to be taken by the members of an electric membership corporation, the articles of incorporation or bylaws require the vote or concurrence of a greater number of the members than required by this article with respect to such action, the provisions of the articles of incorporation or bylaws shall control.

(b) Any such provision in the articles of incorporation or bylaws may not itself be amended by a vote less than the vote prescribed in such provision.

(c) The authorization or taking of any action by vote or concurrence of the members may be rescinded or revoked by the same vote or concurrence as at the time of rescission or revocation would be required to authorize or take such action in the first instance, subject to the contract rights of other persons.