Exhibit 12.4

Ameren Energy Generating Company

Computation of Ratio of Earnings to Fixed Charges

(Thousands of Dollars, Except Ratios)

	Year Ended December 31,
	2006			2007			2008			2009			2010(a)
Net income (loss) from continuing operations attributable to Ameren Energy Generating Company	$	150,354		$	230,238		$	286,467		$	159,869		$	(38,573	)
Less- Net income attributable to noncontrolling interest		(27,143	)		(27,272	)		(28,424	)		(2,007	)		(3,366	)
Add- Taxes based on income		108,642			154,910			182,116			101,148			19,422
Net income (loss) before income taxes and noncontrolling interest		286,139			412,420			497,007			263,024			(15,785	)
Add- fixed charges:
Interest on short-term and long-term debt		59,861			55,930	(b)		54,320	(b)		60,045	(b)		76,321	(b)
Estimated interest cost within rental expense		110			169			232			307			295
Amortization of net debt premium, discount, and expenses		586			586			760			866			1,026
Total fixed charges		60,557			56,685			55,312			61,218			77,642
Earnings available for fixed charges	$	346,696		$	469,105		$	552,319		$	324,242		$	61,857
Ratio of earnings to fixed charges		5.72			8.27			9.98			5.29			-	(c)

^(a) Effective January 1, 2010, Ameren Energy Generating Company (Genco) acquired an 80% ownership interest in Electric Energy Inc. (EEI) from an Ameren subsidiary as a result of an internal re-organization. In accordance with authoritative guidance, periods presented reflect the combined Genco and EEI results.

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

^(c) Earnings are inadequate to cover fixed charges by $15.8 million for the twelve months 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 this Form 10-K for additional information