Exhibit 12.4

Ameren Energy Generating Company

Computation of Ratio of Earnings to Fixed Charges

(Thousands of Dollars, Except Ratios)

	Three Months Ended March  31, 2010		Year Ended         December 31,        2009 (a)
Net income from continuing operations attributable to Ameren Energy Generating Company	$	22,842	$	159,869
Less- Net income attributable to noncontrolling interest		(1,412)		(2,007)
Add- Taxes based on income		18,492		101,148
Net income before income taxes and noncontrolling interest		42,746		263,024
Add- fixed charges:
Interest on short-term and long-term debt (b)		18,256		60,045
Estimated interest cost within rental expense		76		307
Amortization of net debt premium, discount, and expenses		272		866
Total fixed charges		18,604		61,218
Earnings available for fixed charges	$	61,350	$	324,242
Ratio of earnings to fixed charges		3.29		5.29

^(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 organization. In accordance with authoritative guidance, both periods presented reflect the combined Genco and EEI results.

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