Exhibit 12.4

Ameren Energy Generating Company
Computation of Ratio of Earnings to Fixed Charges
(Thousands of Dollars, Except Ratios)

	Year Ended December 31,
	2002		2003		2004		2005			2006
Net income from continuing operations	$	31,837	$	75,185	$	107,292	$	96,732		$	48,929
Less- Change in accounting principle		—		18,416		—		(15,600	)		—
Add- Taxes based on income		20,340		38,538		64,245		72,433			21,955
Net income before income taxes and change in accounting principle		52,177		95,307		171,537		184,765			70,884
Add- fixed charges:
Interest on long term debt		85,777		100,855		93,118		71,720			59,070
Estimated interest cost within rental expense		—		—		—		—			107
Amortization of net debt premium, discount, and expenses		1,377		1,495		1,497		1,345			586
Total fixed charges		87,154		102,350		94,615		73,065			59,763
Earnings available for fixed charges	$	139,331	$	197,657	$	266,152	$	257,830		$	130,647
Ratio of earnings to fixed charges		1.59		1.93		2.81		3.52			2.18