Exhibit 12.4

Ameren Energy Generating Company

Computation of Ratio of Earnings to Fixed Charges

(Thousands of Dollars, Except Ratios)

		00000000000000		00000000000000
	Six Months Ended June 30,		Year Ended December 31,
	2011		2010
Net income (loss) from continuing operations attributable to Ameren Energy Generating Company	$	34,055	$	(38,573	)
Add- Net income attributable to noncontrolling interest		1,037		3,366
Add- Taxes based on income		24,617		19,422
Net income (loss) before income taxes and noncontrolling interest		59,709		(15,785	)
Add- fixed charges:
Interest on short-term and long-term debt (a)		31,102		76,321
Estimated interest cost within rental expense		143		295
Amortization of net debt premium, discount, and expenses		337		1,026
Total fixed charges		31,582		77,642
Earnings available for fixed charges	$	91,291	$	61,857
Ratio of earnings to fixed charges		2.89		-	(b)

^(a)  Includes interest expense related to uncertain tax positions

^(b)  Earnings are inadequate to cover fixed charges by $15.8 million for the year ended December 31, 2010. In the third quarter of 2010, Ameren Energy Generating Company recorded a goodwill and other impairment charge of $170 million. See Note 17 - Goodwill and Other Asset Impairments of the 2010 Form 10-K for additional information.