Exhibit 23.8

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated February 28, 2008 relating to the financial statements, which appear in Ameren Energy Generating Company’s Annual Report on Form 10-K for the year ended December 31, 2007.  We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

St. Louis, Missouri

November 17, 2008