The following table presents the impact on Ameren Missouri and Ameren Illinois of related party transactions for the years ended December 31, 2014, 2013, and 2012. 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	2014	$	5	$	(a)
with Ameren Illinois		2013		3		(a)
		2012		(b)		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2014		21		2
rent and facility services		2013		21		1
		2012		19		1
Ameren Missouri and Ameren Illinois	Operating Revenues	2014		1		(b)
miscellaneous support services		2013		1		3
		2012		1		(b)
Total Operating Revenues		2014	$	27	$	2
		2013		25		4
		2012		20		1
Ameren Illinois power supply	Purchased Power	2014	$	(a)	$	5
agreements with Ameren Missouri		2013		(a)		3
		2012		(a)		(b)
Ameren Illinois transmission	Purchased Power	2014		(a)		2
services with ATXI		2013		(a)		2
		2012		(a)		3
Total Purchased Power		2014	$	(a)	$	7
		2013		(a)		5
		2012		(a)		3
Ameren Services support services	Other Operations and	2014	$	124	$	109
agreement	Maintenance	2013		116		93
		2012		106		88
Insurance premiums^(c)	Other Operations and	2014		(b)		(a)
	Maintenance	2013		(b)		(a)
		2012		(b)		(a)
Total Other Operations and		2014	$	124	$	109
Maintenance Expenses		2013		116		93
		2012		106		88
Money pool borrowings (advances)	Interest (Charges)	2014	$	(b)	$	(b)
	Income	2013		(b)		(b)
		2012		(b)		(b)


(a)	Not applicable.


(b)	Amount less than $1 million.


(c)	Represents insurance premiums paid to Missouri Energy Risk Assurance Company LLC, an affiliate, for replacement power.