
2010 Missouri Credit Agreement ($800 million)	Ameren (Parent)			Ameren Missouri			Total
Average daily borrowings outstanding during 2011	$	181		$	-		$	181
Outstanding credit facility borrowings at period end		200			-			200
Weighted-average interest rate during 2011		2.31	%		-			2.31	%
Peak credit facility borrowings during 2011^(a)	$	340		$	-		$	340
Peak interest rate during 2011		4.30	%		-			4.30	%

2010 Genco Credit Agreement ($500 million)		Ameren (Parent)			Genco			Total
Average daily borrowings outstanding during 2011	$	-		$	83		$	83
Outstanding credit facility borrowings at period end		-			-			-
Weighted-average interest rate during 2011		-			2.30	%		2.30	%
Peak credit facility borrowings during 2011^(a)	$	-		$	100		$	100
Peak interest rate during 2011		-			2.31	%		2.31	%

(a)

The timing of peak credit facility borrowings varies by company and therefore the amounts presented by company might not equal the total peak credit facility borrowings for the period. The simultaneous peak credit facility borrowings by the Ameren Companies under all credit facilities during the first six months of 2011 were $440 million.