RELATED PARTIES

We receive and/or provide certain services to other associated companies in which we have an equity investment.

American Transmission Company LLC: As of December 31, 2013, we have a 26.2% interest in ATC. We pay ATC for transmission and other related services it provides. In addition, we provide a variety of operational, maintenance and project management work for ATC, which is reimbursed to us by ATC. We are required to pay the cost of needed transmission infrastructure upgrades for new generation projects while projects are under construction, including the generating units constructed as part of our PTF strategy. ATC reimburses us for these costs when new generation is placed in service.

The following table summarizes material related party transactions with ATC during 2013, 2012 and 2011:



Equity Investee	2013		2012		2011
	(Millions of Dollars)

Equity in Earnings	$	68.5	$	65.7	$	62.5
Distributions Received	$	54.5	$	52.6	$	49.7

Services Provided	$	9.0	$	8.2	$	10.8
Services Received	$	234.2	$	222.7	$	219.2

As of December 31, 2013 and 2012, our Consolidated Balance Sheets included receivable and payable balances with ATC as follows:



Equity Investee	2013		2012
	(Millions of Dollars)
Accounts Receivable
Services provided	$	0.6	$	0.5

Accounts Payable
Services received	$	19.5	$	18.6