Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2019

The following table presents the specified performance period, price, and amount of megawatthours included in the agreements:



IPA Procurement Event	Performance Period	MWh	Average Price per MWh
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
April 2017	March 2019 – May 2020	85,600	34
April 2018	June 2019 – September 2020	110,000	32
April 2019	January 2020 – December 2021	288,000	35
September 2019	April 2020 – November 2021	170,800	29

Schedule of Affiliate Receivables and Payables

The following table presents the affiliate balances related to income taxes for Ameren Missouri and Ameren Illinois as of December 31, 2019 and 2018:



	2019				2018
	Ameren Missouri		Ameren Illinois		Ameren Missouri		Ameren Illinois
Income taxes payable to parent^(a)	$	15	$	43	$	16	$	7
Income taxes receivable from parent^(b)	15		17		—		6


(a)	Included in “Accounts payable – affiliates” on the balance sheet.

(b)

Included in “Accounts receivable – affiliates” on the balance sheet

Schedule of Capital Contributions

The following table presents cash capital contributions received from Ameren (parent) by Ameren Missouri and Ameren Illinois for the years ended December 31, 2019, 2018, and 2017:



	2019			2018		2017
Ameren Missouri^(a)	$	124		$	45	$	30
Ameren Illinois	15		^(a)	160		8

(a)

As a result of the tax allocation agreement.

Schedule of Related Party Transactions

The following table presents the impact on Ameren Missouri and Ameren Illinois of related-party transactions for the years ended December 31, 2019, 2018, and 2017. 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	2019	$	3	$	(a)
with Ameren Illinois		2018		11		(a)
		2017		23		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2019		27		2
rent and facility services		2018		22		3
		2017		26		4
Ameren Missouri and Ameren Illinois miscellaneous	Operating Revenues	2019		1		2
support services and services provided to ATXI		2018		1		1
		2017		(b)		1
Ameren Missouri software licensing	Operating Revenues	2019		(a)		19
with Ameren Illinois		2018		(a)		(a)
		2017		(a)		(a)
Total Operating Revenues		2019	$	31	$	23
		2018		34		4
		2017		49		5
Ameren Illinois power supply	Purchased Power	2019	$	(a)	$	3
agreements with Ameren Missouri		2018		(a)		11
		2017		(a)		23
Ameren Illinois transmission	Purchased Power	2019		(a)		2
services from ATXI		2018		(a)		1
		2017		(a)		2
Total Purchased Power		2019	$	(a)	$	5
		2018		(a)		12
		2017		(a)		25
Ameren Missouri and Ameren Illinois	Other Operations and	2019	$	2	$	5
rent and facility services	Maintenance	2018		3		6
		2017		(b)		(b)
Ameren Services support services	Other Operations and	2019		135		127
agreement	Maintenance	2018		136		126
		2017		149		139
Total Other Operations and		2019	$	137	$	132
Maintenance Expenses		2018		139		132
		2017		149		139
Money pool borrowings (advances)	(Interest Charges)	2019	$	(b)	$	(b)
	Other Income, Net	2018		1		(b)
		2017		1		(b)


(a)	Not applicable.

(b)

Amount less than $1 million.