RELATED-PARTY TRANSACTIONS

In the normal course of business, the Ameren Companies engage in affiliate transactions. These transactions primarily consist of natural gas and power purchases and sales, services received or rendered, and borrowings and lendings. Transactions between Ameren’s subsidiaries are reported as affiliate transactions on their individual financial statements, but those transactions are eliminated in consolidation for Ameren’s consolidated financial statements. For a discussion of our material related-party agreements and money pool arrangements, see Note 13 – Related-party Transactions and Note 4 – Short-term Debt and Liquidity under Part II, Item 8, of the Form 10-K.

Electric Power Supply Agreement

In April 2018, Ameren Illinois conducted a procurement event, administered by the IPA, to purchase energy products. Ameren Missouri was among the winning suppliers in this event. As a result, in April 2018, Ameren Missouri and Ameren Illinois entered into an energy product agreement by which Ameren Missouri agreed to sell, and Ameren Illinois agreed to purchase, 110,000 megawatthours at an average price of $32 per megawatthour during the period of June 2019 through September 2020.

The following table presents the impact on Ameren Missouri and Ameren Illinois of related-party transactions for the three and six months ended June 30, 2018 and 2017:



				Three Months				Six Months
Agreement	Income Statement Line Item			Ameren Missouri		Ameren Illinois		Ameren Missouri		Ameren Illinois
Ameren Missouri power supply	Operating Revenues	2018	$	3	$	(a)	$	6	$	(a)
agreements with Ameren Illinois		2017		6		(a)		17		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2018		6		1		11		2
rent and facility services		2017		6		1		13		2
Ameren Missouri and Ameren Illinois	Operating Revenues	2018		(b)		(b)		(b)		(b)
miscellaneous support services		2017		(b)		1		(b)		1
Total Operating Revenues		2018	$	9	$	1	$	17	$	2
		2017		12		2		30		3
Ameren Illinois power supply	Purchased Power	2018	$	(a)	$	3	$	(a)	$	6
agreements with Ameren Missouri		2017		(a)		6		(a)		17
Ameren Illinois transmission	Purchased Power	2018		(a)		1		(a)		1
services with ATXI		2017		(a)		1		(a)		1
Total Purchased Power		2018	$	(a)	$	4	$	(a)	$	7
		2017		(a)		7		(a)		18
Ameren Services support services	Other Operations and Maintenance	2018	$	32	$	30	$	65	$	60
agreement		2017		34		34		69		66
Money pool borrowings (advances)	Interest Charges/ Other Income, Net	2018	$	(b)	$	(b)	$	(b)	$	(b)
		2017		(b)		(b)		(b)		(b)


(a)	Not applicable.


(b)	Amount less than $1 million.