Related Party Transactions

3 Months Ended

Mar. 31, 2021

RELATED-PARTY TRANSACTIONS

In the ordinary course of business, Ameren Missouri and Ameren Illinois have engaged in, and may in the future 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 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. For information Ameren Missouri’s and Ameren Illinois’ capital contributions, see Note 4 – Long-term Debt and Equity Financings.

Electric Power Supply Agreement

In April 2021, 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 2021, Ameren Missouri and Ameren Illinois entered into an energy product agreement by which Ameren Missouri agreed to sell and Ameren Illinois agreed to purchase, 33,600 MWhs at an average price of $34 per MWh during the period of July 2022 through November 2022.

Tax Allocation Agreement

See Note 1 – Summary of Significant Accounting Policies under Part II, Item 8, of the Form 10-K for a discussion of the tax allocation agreement. The following table presents the affiliate balances related to income taxes for Ameren Missouri and Ameren Illinois as of March 31, 2021, and December 31, 2020:


	March 31, 2021				December 31, 2020
	Ameren Missouri		Ameren Illinois		Ameren Missouri		Ameren Illinois
Income taxes payable to parent(a)	$	—	$	6	$	—	$	6
Income taxes receivable from parent(b)	14		18		9		15

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

(b)Included in “Accounts receivable – affiliates” on the balance sheet.

Effects of Related-party Transactions on the Statement of Income

The following table presents the effect on Ameren Missouri and Ameren Illinois of related-party transactions for the three months ended March 31, 2021 and 2020:


			Three Months
Agreement	Income Statement Line Item				Ameren Missouri		Ameren Illinois
Ameren Missouri power supply	Operating Revenues	2021		$	2	$	(a)
agreements with Ameren Illinois		2020			3		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2021		$	7	$	(b)
rent and facility services		2020			7		1
Ameren Missouri and Ameren Illinois miscellaneous	Operating Revenues	2021		$	(b)	$	(b)
support services and services provided to ATXI		2020			(b)		(b)
Total Operating Revenues		2021		$	9	$	(b)
		2020			10		1
Ameren Illinois power supply	Purchased Power	2021		$	(a)	$	2
agreements with Ameren Missouri		2020			(a)		3
Ameren Missouri and Ameren Illinois	Purchased Power	2021		$	1	$	(b)
transmission services from ATXI		2020			(a)		(b)
Total Purchased Power		2021		$	1	$	2
		2020			(a)		3
Ameren Missouri and Ameren Illinois	Other Operations and Maintenance	2021		$	(b)	$	1
rent and facility services		2020			(b)		1
Ameren Services support services	Other Operations and Maintenance	2021		$	35	$	33
agreement		2020			35		33
Total Other Operations and		2021		$	35	$	34
Maintenance		2020			35		34
Money pool borrowings (advances)	(Interest Charges)/Other Income, Net	2021		$	(b)	$	(b)
		2020			(b)		(b)

(a)Not applicable.

(b)Amount less than $1 million.