The following table presents the impact on Ameren Missouri and Ameren Illinois of related party transactions for the years ended December 31, 2013, 2012, and 2011. It is based primarily on the agreements discussed above and the money pool arrangements discussed in Note 4 – Short-term Debt and Liquidity.



Agreement	Income Statement Line Item			Ameren Missouri		Ameren Illinois
Ameren Missouri power supply agreements	Operating Revenues	2013	$	3	$	(a)
with Ameren Illinois		2012		(b)		(a)
		2011		2		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2013		21		1
rent and facility services		2012		19		1
		2011		16		2
Ameren Missouri and Ameren Illinois	Operating Revenues	2013		1		3
miscellaneous support services		2012		1		(b)
		2011		5		1
Total Operating Revenues		2013	$	25	$	4
		2012		20		1
		2011		23		3
Ameren Illinois power supply	Purchased Power	2013	$	(a)	$	3
agreements with Ameren Missouri		2012		(a)		(b)
		2011		(a)		2
Ameren Illinois transmission	Purchased Power	2013		(a)		2
services with ATXI		2012		(a)		3
		2011		(a)		3
Total Purchased Power		2013	$	(a)	$	5
		2012		(a)		3
		2011		(a)		5
Ameren Services support services	Other Operations and	2013	$	116	$	93
agreement	Maintenance	2012		106		88
		2011		114		87
Insurance premiums^(c)	Other Operations and	2013		(b)		(a)
	Maintenance	2012		(b)		(a)
		2011		(b)		(a)
Total Other Operations and		2013	$	116	$	93
Maintenance Expenses		2012		106		88
		2011		114		87
Money pool borrowings (advances)	Interest (Charges)	2013	$	(b)	$	(b)
	Income	2012		(b)		(b)
		2011		—		—


(a)	Not applicable.


(b)	Amount less than $1 million.


(c)	Represents insurance premiums paid to Energy Risk Assurance Company, an affiliate for replacement power, property damage, and terrorism coverage.