RELATED PARTIES

Service Agreements - IPL and WPL are parties to service agreements with an affiliate, Corporate Services. Pursuant to these service agreements, IPL and WPL receive various administrative and general services. These services are billed to IPL and WPL at cost based on expenses incurred by Corporate Services for the benefit of IPL and WPL, respectively. These costs consisted primarily of employee compensation and benefits, fees associated with various professional services and a return on net assets. Corporate Services also acts as agent on behalf of IPL and WPL pursuant to the service agreements. As agent, Corporate Services enters into energy, capacity, ancillary services, and transmission sale and purchase transactions within MISO. Corporate Services assigns such sales and purchases among IPL and WPL based on statements received from MISO. The amounts billed for services provided, sales credited and purchases were as follows (in millions):



	IPL						WPL
	2015		2014		2013		2015		2014		2013
Corporate Services billings		$150		$148		$140		$121		$116		$103
Sales credited	10		8		7		24		6		12
Purchases billed	366		422		365		66		125		68

As of December 31, net intercompany payables to Corporate Services were as follows (in millions):



	2015		2014
IPL		$93		$84
WPL	54		58

ATC - Pursuant to various agreements, WPL receives a range of transmission services from ATC. WPL provides operation, maintenance, and construction services to ATC. WPL and ATC also bill each other for use of shared facilities owned by each party. The related amounts billed between the parties were as follows (in millions):



	2015		2014		2013
ATC billings to WPL		$101		$96		$96
WPL billings to ATC	13		9		12

As of December 31, 2015 and 2014, WPL owed ATC net amounts of $8 million and $8 million, respectively.

WPL’s Sheboygan Falls Lease - Refer to Note 10(b) for discussion of WPL’s Sheboygan Falls lease.

Related Parties

RELATED PARTIES

Service Agreements - IPL and WPL are parties to service agreements with an affiliate, Corporate Services. Pursuant to these service agreements, IPL and WPL receive various administrative and general services. These services are billed to IPL and WPL at cost based on expenses incurred by Corporate Services for the benefit of IPL and WPL, respectively. These costs consisted primarily of employee compensation and benefits, fees associated with various professional services and a return on net assets. Corporate Services also acts as agent on behalf of IPL and WPL pursuant to the service agreements. As agent, Corporate Services enters into energy, capacity, ancillary services, and transmission sale and purchase transactions within MISO. Corporate Services assigns such sales and purchases among IPL and WPL based on statements received from MISO. The amounts billed for services provided, sales credited and purchases were as follows (in millions):



	IPL						WPL
	2015		2014		2013		2015		2014		2013
Corporate Services billings		$150		$148		$140		$121		$116		$103
Sales credited	10		8		7		24		6		12
Purchases billed	366		422		365		66		125		68

As of December 31, net intercompany payables to Corporate Services were as follows (in millions):



	2015		2014
IPL		$93		$84
WPL	54		58

ATC - Pursuant to various agreements, WPL receives a range of transmission services from ATC. WPL provides operation, maintenance, and construction services to ATC. WPL and ATC also bill each other for use of shared facilities owned by each party. The related amounts billed between the parties were as follows (in millions):



	2015		2014		2013
ATC billings to WPL		$101		$96		$96
WPL billings to ATC	13		9		12

As of December 31, 2015 and 2014, WPL owed ATC net amounts of $8 million and $8 million, respectively.

WPL’s Sheboygan Falls Lease - Refer to Note 10(b) for discussion of WPL’s Sheboygan Falls lease.