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Investment in American Transmission Company (Tables)
 12 Months Ended
Dec. 31, 2016
Investment in ATC  
Schedule of significant transactions with ATC
The following table shows activity associated with our related party transactions for the years ended December 31:
(in millions)
 
2016
 
2015
 
2014
Lease agreements
 
 

 
 

 
 

Lease payments to We Power (1)
 
$
412.2

 
$
410.5

 
$
389.0

CWIP billed to We Power
 
37.9

 
58.8

 
41.0

 
 
 
 
 
 
 
Transactions with WBS (2)
 
 
 
 
 
 
Billings to WBS (3)
 
213.8

 
11.1

 
—

Billings from WBS (4)
 
310.6

 
1.3

 
—

 
 
 
 
 
 
 
Transactions with WPS (2)
 
 
 
 

 
 
Billings to WPS
 
9.0

 
13.4

 
—

Billings from WPS
 
4.2

 
4.9

 
—

 
 
 
 
 
 
 
Transactions with WG
 
 
 
 

 
 
Natural gas purchases from WG
 
5.3

 
5.3

 
6.6

Services received from WG
 
21.5

 
23.5

 
20.6

Services provided to WG
 
60.6

 
79.4

 
81.7


(1) 
We make lease payments to We Power, another subsidiary of WEC Energy Group, for PWGS 1, PWGS 2, ER 1, and ER 2.

(2) 
Includes amounts billed for services, pass through costs, and other items in accordance with the approved AIAs discussed above.

(3) 
Includes $13.1 million for the transfer of certain software assets to WBS for the year ended December 31, 2016.

(4) 
Includes $116.0 million for the transfer of certain benefit-related liabilities to WBS for the year ended December 31, 2016.
ATC  
Investment in ATC  
Schedule of changes to our investment in ATC
The following table shows changes to our investment in ATC during the years ended December 31:
(in millions)
 
2016
 
2015
 
2014
Balance at beginning of period
 
$
382.2

 
$
372.9

 
$
354.1

Add: Earnings from equity method investment
 
55.5

 
47.8

 
57.9

Add: Capital contributions
 
16.1

 
4.6

 
11.5

Less: Distributions
 
51.7

*
42.9

 
50.5

Less: Other
 
0.1

 
0.2

 
0.1

Balance at end of period
 
$
402.0

 
$
382.2

 
$
372.9



*
Of this amount, $13.4 million was recorded as a receivable at December 31, 2016.
Schedule of significant transactions with ATC
The following table summarizes our significant related party transactions with ATC during the years ended December 31:
(in millions)
 
2016
 
2015
 
2014
Charges to ATC for services and construction
 
$
10.0

 
$
9.7

 
$
8.1

Charges from ATC for network transmission services
 
247.8

 
238.5

 
231.4
Schedule of receivables and payables with ATC
As of December 31, 2016 and 2015, our balance sheets included the following receivables and payables related to ATC:
(in millions)
 
2016
 
2015
Accounts receivable
 
 
 
 
Services provided to ATC
 
$
1.1

 
$
0.6

Accounts payable
 
 
 
 
Services received from ATC
 
20.0

 
19.9
Schedule of summarized income statement data for ATC
Summarized financial data for ATC is included in the tables below:
(in millions)
 
2016
 
2015
 
2014
Income statement data
 
 
 
 
 
 
Revenues
 
$
650.8

 
$
615.8

 
$
635.0

Operating expenses
 
322.5

 
319.3

 
307.4

Other expense
 
95.5

 
96.1

 
88.9

Net income
 
$
232.8

 
$
200.4

 
$
238.7
Schedule of summarized balance sheet data for ATC
(in millions)
 
December 31, 2016
 
December 31, 2015
Balance sheet data
 
 
 
 
Current assets
 
$
75.8

 
$
80.5

Noncurrent assets
 
4,312.9

 
3,948.3

Total assets
 
$
4,388.7

 
$
4,028.8

 
 
 
 
 
Current liabilities
 
$
495.1

 
$
330.3

Long-term debt
 
1,865.3

 
1,790.7

Other noncurrent liabilities
 
271.5

 
245.0

Shareholders' equity
 
1,756.8

 
1,662.8

Total liabilities and shareholders' equity
 
$
4,388.7

 
$
4,028.8