EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, Ameren Corporation, a Missouri corporation (the “Company”), intends to file with the Securities and Exchange Commission, under the Securities Act of 1933, as amended, a Registration Statement on Form S-8 (the “Registration Statement”) and any amendments thereto, covering the registration of common stock under the Company’s 2014 Omnibus Incentive Compensation Plan, as authorized by the Company’s Board of Directors on February 14, 2014; and

WHEREAS, each of the below undersigned is a director of the Company;

NOW, THEREFORE, each of the undersigned hereby constitutes and appoints Martin J. Lyons, Jr. and/or Gregory L. Nelson the true and lawful attorneys-in-fact of the undersigned, for and in the name, place and stead of the undersigned, to affix the name of the undersigned to said Registration Statement and any amendments thereto, and, for the performance of the same acts, each with power to appoint in their place and stead and as their substitute, one or more attorneys-in-fact for the undersigned, with full power of revocation, and hereby ratify and confirm all that said attorneys-in-fact may do by virtue hereof.

IN WITNESS WHEREOF, the undersigned have hereunto set their hands this 24th day of April, 2014:

Catherine S. Brune, Director	/s/Catherine S. Brune
Ellen M. Fitzsimmons, Director	/s/Ellen M. Fitzsimmons
Walter J. Galvin, Director	/s/Walter J. Galvin
Richard J. Harshman, Director	/s/Richard J. Harshman
Gayle P. W. Jackson, Director	/s/Gayle P. W. Jackson
James C. Johnson, Director	/s/James C. Johnson
Steven H. Lipstein, Director	/s/Steven H. Lipstein
Patrick T. Stokes, Director	/s/Patrick T. Stokes
Thomas R. Voss, Director	/s/Thomas R. Voss
Stephen R. Wilson, Director	/s/Stephen R. Wilson
Jack D. Woodard, Director	/s/Jack D. Woodard

STATE OF MISSOURI	)
	) SS.
CITY OF ST. LOUIS	)

On this 24th day of April, 2014, before me, the undersigned Notary Public in and for said State, personally appeared the above-named directors of Ameren Corporation, known to me to be the persons described in and who executed the foregoing power of attorney and acknowledged to me that they executed the same as their free act and deed for the purposes therein stated.

IN TESTIMONY WHEREOF, I have hereunto set my hand and affixed my official seal.

/s/ Lynn M. Smith

Lynn M. Smith

Notary Public – Notary Seal

STATE OF MISSOURI

Commission for St. Louis City

My Commission Expires Sept. 28, 2014

Commission #10402618