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Related Party Transactions
 6 Months Ended
Jun. 30, 2017
Related Party Transactions [Abstract]  
RELATED PARTY TRANSACTIONS
RELATED PARTY TRANSACTIONS
In the normal course of business, the Ameren Companies engage in affiliate transactions. These transactions primarily consist of power purchases and sales, services received or rendered, and borrowings and lendings. Transactions between affiliates are reported as intercompany transactions on their financial statements but are eliminated in consolidation for Ameren’s financial statements. For a discussion of our material related party agreements, see Note 14 – Related Party Transactions under Part II, Item 8, of the Form 10-K and the money pool arrangements discussed in Note 3 – Short-term Debt and Liquidity of this report.
Electric Power Supply Agreement
In April 2017, 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 2017, Ameren Missouri and Ameren Illinois entered into an energy product agreement by which Ameren Missouri agreed to sell, and Ameren Illinois agreed to purchase, 85,600 megawatthours at an average price of $34 per megawatthour during the period of March 1, 2019, through May 31, 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, 2017 and 2016:
 
 
 
 
Three Months
 
Six Months
Agreement
Income Statement
Line Item
 
 
Ameren
Missouri
 
Ameren
Illinois
 
Ameren
Missouri
 
Ameren
Illinois
Ameren Missouri power supply
Operating Revenues
2017
$
6

$
(a)

$
17

$
(a)

agreements with Ameren Illinois
 
2016
 
3

 
(a)

 
12

 
(a)

Ameren Missouri and Ameren Illinois
Operating Revenues
2017
 
6

 
1

 
13

 
2

rent and facility services
 
2016
 
7

 
1

 
13

 
2

Ameren Missouri and Ameren Illinois
Operating Revenues
2017
 
(b)

 
1

 
(b)

 
1

miscellaneous support services
 
2016
 
(b)

 
(b)

 
(b)

 
(b)

Total Operating Revenues
 
2017
$
12

$
2

$
30

$
3

 
 
2016
 
10

 
1

 
25

 
2

Ameren Illinois power supply
Purchased Power
2017
$
(a)

$
6

$
(a)

$
17

agreements with Ameren Missouri
 
2016
 
(a)

 
3

 
(a)

 
12

Ameren Illinois transmission
Purchased Power
2017
 
(a)

 
1

 
(a)

 
1

services with ATXI
 
2016
 
(a)

 
1

 
(a)

 
1

Total Purchased Power
 
2017
$
(a)

$
7

$
(a)

$
18

 
 
2016
 
(a)

 
4

 
(a)

 
13

Ameren Services support services
Other Operations and Maintenance
2017
$
34

$
34

$
69

$
66

agreement
 
2016
 
32

 
30

 
66

 
61

Money pool borrowings (advances)
Interest Charges/ Miscellaneous Income
2017
$
(b)

$
(b)

$
(b)

$
(b)

 
 
2016
 
(b)

 
(b)

 
(b)

 
(b)

(a)
Not applicable.
(b)
Amount less than $1 million.