Consumers Energy (CMS-PB) 8-K Certain terms used in the text and financial statements are defined below

Exhibit (23)(b)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Forms S-8 (Nos. 333-32229, 333-58686), S-3 (Nos. 333-125553, 333-52560, 333-27849, 333-74958, 333-45556, 333-37241), and S-4 (Nos. 33-60007, 33-55805) of CMS Energy Corporation of our report dated February 19, 2007 relating to the financial statements of Midland Cogeneration Venture L.P., which appears in this Form 8-K.

/s/ PricewaterhouseCoopers LLP
Detroit, Michigan
May 31, 2007