Exhibit 3.1
CMS Energy Corporation
Amendment to Restated Articles of Incorporation
ARTICLE XI
The Corporation reserves the right to amend, alter,
change or repeal any provision in these Articles of Incorporation as permitted by law, and all rights conferred on shareholders herein
are granted subject to this reservation. Notwithstanding the foregoing, the provisions of Articles V, VI, VII, VIII, IX and this
Article XI may not be amended, altered, changed or repealed unless such amendment, alteration, change or repeal is approved by the
affirmative vote of a majority the holders of not less than 75% of the outstanding shares entitled
to vote thereon.