Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2016

The following table presents the agreements the companies have entered into, as well as the specified time period, price, and amount of megawatthours included in each agreement:



IPA Procurement Event	Time Period	MWh		Average Price per MWh
May 2014	January 2015 – February 2017	168,400	$	51
April 2015	June 2015 – June 2017	667,000		36
September 2015	November 2015 – May 2018	339,000		38
April 2016	June 2017 – September 2018	375,200		35
September 2016	May 2017 – September 2018	82,800		34

The following table presents the impact on Ameren Missouri and Ameren Illinois of related party transactions for the years ended December 31, 2016, 2015, and 2014. 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	2016	$	28	$	(a)
with Ameren Illinois		2015		15		(a)
		2014		5		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2016		25		5
rent and facility services		2015		25		4
		2014		21		2
Ameren Missouri and Ameren Illinois	Operating Revenues	2016		1		(b)
miscellaneous support services		2015		2		(b)
		2014		1		(b)
Total Operating Revenues		2016	$	54	$	5
		2015		42		4
		2014		27		2
Ameren Illinois power supply	Purchased Power	2016	$	(a)	$	28
agreements with Ameren Missouri		2015		(a)		15
		2014		(a)		5
Ameren Illinois transmission	Purchased Power	2016		(a)		2
services from ATXI		2015		(a)		2
		2014		(a)		2
Total Purchased Power		2016	$	(a)	$	30
		2015		(a)		17
		2014		(a)		7
Ameren Services support services	Other Operations and	2016	$	129	$	123
agreement	Maintenance	2015		131		119
		2014		124		109
Money pool borrowings (advances)	Interest (Charges)	2016	$	(b)	$	(b)
	Income	2015		(b)		(b)
		2014		(b)		(b)


(a)	Not applicable.


(b)	Amount less than $1 million.