Exhibit 12.5

CILCORP INC.
Computation of Ratio of Earnings to Fixed Charges
(Thousands of Dollars, Except Ratios)

	Year Ended		1/01/03		1/31/03
	December 31,		Thru		Thru		Year Ended December 31,
	2002		1/30/03 (1)		12/31/03 (1)		2004			2005			2006
Net income from continuing operations	$	24,658	$	9,203	$	14,400	$	10,367		$	3,222		$	21,004
Less- Change in accounting principle		—		3,818		—		—			(2,497	)		—
Add- Taxes based on income (benefit)		6,841		2,922		5,946		(8,526	)		(3,164	)		(10,944	)
Net income before income taxes and change in accounting principle		31,499		8,307		20,346		1,841			2,555			10,060
Add- fixed charges:
Interest on long term debt		71,407		5,035		48,899		51,992			50,562			51,574
Estimated interest cost within rental expense		1,619		87		1,398		395			390			289
Amortization of net debt premium, discount, and expenses		—		168		862		767			693			801
Subsidiary preferred stock dividends		2,159		180		1,947		2,062			1,988			1,933
Adjust preferred stock dividends to pre-tax basis		1,420		103		1,114		346			1,293			(1,007	)
Total fixed charges		76,605		5,573		54,220		55,562			54,926			53,590
Less: Adjustment of preferred stock dividends to pre-tax basis		1,420		103		1,114		346			1,293			(1,007	)
Earnings available for fixed charges	$	106,684	$	13,777	$	73,452	$	57,057		$	56,188		$	64,657
Ratio of earnings to fixed charges		1.39		2.47		1.35		1.02			1.02			1.20

(1) Ameren Corporation purchased CILCORP Inc. and subsidiaries on January 31, 2003.