OPERATING REVENUES

Disaggregation of Operating Revenues

The following tables present our operating revenues disaggregated by revenue source. We disaggregate revenues into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For our segments, revenues are further disaggregated by electric and natural gas operations and then by customer class. Each customer class within our electric and natural gas operations have different expectations of service, energy and demand requirements, and are impacted by regulatory activities within their jurisdictions.

Comparable amounts have not been presented for the years ended December 31, 2017 and 2016, due to our adoption of ASU 2014-09, Revenues from Contracts with Customers, under the modified retrospective method. See Note 1(d), Operating Revenues, for more information about our significant accounting policies related to operating revenues.



(in millions)	Wisconsin		Illinois			Other States			Total Utility Operations			Electric Transmission		Non-Utility Energy Infrastructure			Corporate and Other		Reconciling Eliminations			WEC Energy Group Consolidated
Year ended December 31, 2018
Electric	$	4,432.4	$	—		$	—		$	4,432.4		$	—	$	—		$	—	$	—		$	4,432.4
Natural gas	1,350.6		1,406.9			428.4			3,185.9			—		45.4		*	—		(36.4		)	3,194.9
Total utility revenues	5,783.0		1,406.9			428.4			7,618.3			—		45.4			—		(36.4		)	7,627.3
Other non-utility revenues	—		0.2			16.1			16.3			—		34.6			7.9		(5.8		)	53.0
Total revenues from contracts with customers	5,783.0		1,407.1			444.5			7,634.6			—		80.0			7.9		(42.2		)	7,680.3
Other operating revenues	11.7		(7.1		)	(6.3		)	(1.7		)	—		388.4			0.8		(388.3		)	(0.8		)
Total operating revenues	$	5,794.7	$	1,400.0		$	438.2		$	7,632.9		$	—	$	468.4		$	8.7	$	(430.5	)	$	7,679.5

* Represents natural gas operating revenues from Bluewater.

Revenues from Contracts with Customers

Electric Utility Operating Revenues

The following table disaggregates electric utility operating revenues into customer class:



	Electric Utility Operating Revenues
(in millions)	Year ended December 31, 2018
Residential	$	1,636.3
Small commercial and industrial	1,408.6
Large commercial and industrial	912.2
Other	29.9
Total retail revenues	3,987.0
Wholesale	210.1
Resale	192.2
Steam	24.1
Other utility revenues	19.0
Total electric utility operating revenues	$	4,432.4

Natural Gas Utility Operating Revenues

The following table disaggregates natural gas utility operating revenues into customer class:



(in millions)	Wisconsin		Illinois		Other States			Total Natural Gas Utility Operating Revenues
Year Ended December 31, 2018
Residential	$	834.5	$	877.5	$	263.3		$	1,975.3
Commercial and industrial	436.7		266.9		140.0			843.6
Total retail revenues	1,271.2		1,144.4		403.3			2,818.9
Transport	70.8		244.1		31.8			346.7
Other utility revenues *	8.6		18.4		(6.7		)	20.3
Total natural gas utility operating revenues	$	1,350.6	$	1,406.9	$	428.4		$	3,185.9


*	Includes amounts collected from (refunded to) customers for purchased gas adjustment costs.

Other Non-Utility Operating Revenues

Other non-utility operating revenues consist primarily of the following:



(in millions)	Year Ended December 31, 2018
We Power revenues	$	25.3
Appliance service revenues	15.9
Distributed renewable solar project revenues	8.0
Wind generation revenues	3.6
Other	0.2
Total other non-utility operating revenues	$	53.0

Other Operating Revenues

Other operating revenues consist primarily of the following:



(in millions)	Year Ended December 31, 2018
Alternative revenues *	$	(45.6	)
Late payment charges	40.3
Leases	4.5
Total other operating revenues	$	(0.8	)


*	Negative amounts can result from alternative revenues being reversed to revenues from contracts with customers as the customer is billed for these alternative revenues. Negative amounts can also result from revenues to be refunded to customers subject to decoupling mechanisms and wholesale true-ups, as discussed in Note 1(d), Operating Revenues.