Exhibit 12.4

Ameren Energy Generating Company

Computation of Ratio of Earnings to Fixed Charges

(Thousands of Dollars, Except Ratios)

	Year Ended December 31,
	2001			2002		2003		2004		2005
Net income from continuing operations	$	75,924		$	31,837	$	75,185	$	107,292	$	96,732
Less- Change in accounting principle		(1,993	)		-		18,416		-		(15,600	)
Add- Taxes based on income		47,296			20,340		38,538		64,245		72,433
Net income before income taxes and change in accounting principle		125,213			52,177		95,307		171,537		184,765
Add- fixed charges:
Interest on long term debt		75,327			85,777		100,855		93,118		71,720
Amortization of net debt premium, discount, and expenses		1,059			1,377		1,495		1,497		1,345
Total fixed charges		76,386			87,154		102,350		94,615		73,065
Earnings available for fixed charges		201,599			139,331		197,657		266,152		257,830
Ratio of earnings to fixed charges		2.63			1.59		1.93		2.81		3.52