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Operating Revenues (Tables) | 12 Months Ended
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Dec. 31, 2018
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | 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 |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | 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 |
Revenues from contracts with customers | Natural gas |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | 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.
Revenues from contracts with customers | Other non-utility revenues |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | 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 |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | 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.

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