RELATED PARTIES (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of information summarizing other related party transactions

Our balance sheets included the following receivables and payables related to transactions entered into with ATC:



(in millions)	December 31, 2019		December 31, 2018
Accounts receivable
Service provided to ATC	$	1.9	$	1.2
Amounts due from ATC for transmission infrastructure upgrades	2.8		—
Accounts payable
Services received from ATC	9.1		8.8

Schedule of activity associated with related party transactions

The following table shows activity associated with our related party transactions for the years ended December 31:



(in millions)	2019	2018			2017
Transactions with WE
Natural gas related sales to WE ⁽¹⁾	2.0	1.9			1.6
Billings to WE ⁽²⁾	9.3	10.9			4.5
Billings from WE ⁽²⁾	13.2	17.8			28.2
Transactions with WBS
Billings to WBS ⁽²⁾	32.5	17.0			174.9	⁽⁷⁾
Billings from WBS ⁽²⁾	87.0	111.0	⁽⁶	⁾	132.9	⁽⁶⁾
Transactions with UMERC
Electric sales to UMERC ⁽³⁾	4.5	15.8			16.2
Natural gas related sales to UMERC ⁽¹⁾	2.8	2.7			2.5
Billings to UMERC	4.2	2.9			—
Transactions with Bluewater ⁽⁴⁾
Storage service fees	11.2	4.7			0.3
Natural gas related sales to Bluewater ⁽¹⁾	1.1	—			—
Transactions related to ATC
Charges to ATC for services and construction	11.0	7.9			6.2
Charges from ATC for network transmission services	107.8	106.1			107.8
Refund from ATC related to a FERC audit	—	6.6			—
Refund from ATC per FERC ROE order	—	—			8.9
Transactions with WRPC
Rental payments to WRPC ⁽⁵⁾	1.9	1.3			1.3
Purchases of energy from WRPC ⁽⁵⁾	—	—			0.5
Charges from WRPC for services	2.5	2.4			2.2
Charges to WRPC for operations	0.8	1.2			0.9


⁽¹⁾	Includes amounts related to the sale of natural gas and/or pipeline capacity.


⁽²⁾	Includes amounts billed for services, pass through costs, asset and liability transfers, and other items in accordance with approved AIAs. As required by FERC regulations for centralized service companies, WBS renders services at cost. In addition, all services provided by any regulated subsidiary to another regulated subsidiary or WBS are priced at cost.


⁽³⁾	On March 31, 2019, UMERC's new natural gas-fired generation in the Upper Peninsula of Michigan began commercial operation. Prior to its generating units achieving commercial operation, UMERC purchased a portion of its power from us. See below for more information on UMERC.


⁽⁴⁾	WEC Energy Group's acquisition of Bluewater was completed on June 30, 2017. See below for more information.


⁽⁵⁾	In March 2017, we terminated our purchased power agreement with WRPC and entered into an agreement with WRPC to rent 50% of its hydroelectric power generation facilities.


⁽⁶⁾	Includes $30.0 million and $10.1 million for the transfer of certain software assets from WBS for the years ended December 31, 2018 and 2017, respectively.

⁽⁷⁾

Includes $157.8 million of net cash received related to our transfer of pension trust assets in conjunction with the Integrys pension plan split. Effective January 1, 2017, the Integrys Energy Group Retirement Plan was split into six separate plans. As a result, we now have our own pension plan. While the split did not impact our pension benefit obligation, federal regulations required a different allocation of assets among the new plans. Assets were transferred out of our plan in January 2017.