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OPERATING REVENUES (Tables) | 6 Months Ended
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Jun. 30, 2018
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | 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 three and six months ended June 30, 2017, due to our adoption of this standard under the modified retrospective method.
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Three Months Ended June 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electric |  | $ | 1,084.2 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,084.2 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,084.2 |
Natural gas |  | 236.4 |  |  | 273.8 |  |  | 68.9 |  |  | 579.1 |  |  | — |  |  | 10.0 |  |  | — |  |  | (12.7 | ) |  | 576.4 |
Total utility revenues |  | 1,320.6 |  |  | 273.8 |  |  | 68.9 |  |  | 1,663.3 |  |  | — |  |  | 10.0 |  |  | — |  |  | (12.7 | ) |  | 1,660.6 |
Other non-utility revenues |  | — |  |  | 0.1 |  |  | 3.9 |  |  | 4.0 |  |  | — |  |  | 9.3 |  |  | 2.8 |  |  | (3.1 | ) |  | 13.0 |
Total revenues from contracts with customers |  | 1,320.6 |  |  | 273.9 |  |  | 72.8 |  |  | 1,667.3 |  |  | — |  |  | 19.3 |  |  | 2.8 |  |  | (15.8 | ) |  | 1,673.6 |
Other operating revenues |  | 4.9 |  |  | (5.9 | ) |  | (0.4 | ) |  | (1.4 | ) |  | — |  |  | 97.7 |  |  | 0.3 |  |  | (97.7 | ) |  | (1.1 | )
Total operating revenues |  | $ | 1,325.5 |  |  | $ | 268.0 |  |  | $ | 72.4 |  |  | $ | 1,665.9 |  |  | $ | — |  |  | $ | 117.0 |  |  | $ | 3.1 |  |  | $ | (113.5 | ) |  | $ | 1,672.5 |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Electric Transmission |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Six Months Ended June 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electric |  | $ | 2,151.9 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,151.9 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,151.9 |
Natural gas |  | 754.4 |  |  | 781.4 |  |  | 241.6 |  |  | 1,777.4 |  |  | — |  |  | 24.9 |  |  | — |  |  | (15.2 | ) |  | 1,787.1 |
Total utility revenues |  | 2,906.3 |  |  | 781.4 |  |  | 241.6 |  |  | 3,929.3 |  |  | — |  |  | 24.9 |  |  | — |  |  | (15.2 | ) |  | 3,939.0 |
Other non-utility revenues |  | — |  |  | 0.1 |  |  | 7.8 |  |  | 7.9 |  |  | — |  |  | 16.4 |  |  | 4.1 |  |  | (3.8 | ) |  | 24.6 |
Total revenues from contracts with customers |  | 2,906.3 |  |  | 781.5 |  |  | 249.4 |  |  | 3,937.2 |  |  | — |  |  | 41.3 |  |  | 4.1 |  |  | (19.0 | ) |  | 3,963.6 |
Other operating revenues |  | 8.3 |  |  | (6.2 | ) |  | (7.1 | ) |  | (5.0 | ) |  | — |  |  | 193.8 |  |  | 0.4 |  |  | (193.8 | ) |  | (4.6 | )
Total operating revenues |  | $ | 2,914.6 |  |  | $ | 775.3 |  |  | $ | 242.3 |  |  | $ | 3,932.2 |  |  | $ | — |  |  | $ | 235.1 |  |  | $ | 4.5 |  |  | $ | (212.8 | ) |  | $ | 3,959.0 |
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) |  | Three Months Ended June 30, 2018 |  | Six Months Ended June 30, 2018
Residential |  | $ | 393.7 |  |  | $ | 778.0 |
Small commercial and industrial |  | 353.3 |  |  | 684.0 |
Large commercial and industrial |  | 241.6 |  |  | 445.5 |
Other |  | 7.2 |  |  | 14.9 |
Total retail revenues |  | 995.8 |  |  | 1,922.4 |
Wholesale |  | 58.4 |  |  | 113.3 |
Resale |  | 25.1 |  |  | 98.9 |
Steam |  | 4.5 |  |  | 14.2 |
Other utility revenues |  | 0.4 |  |  | 3.1 |
Total electric utility operating revenues |  | $ | 1,084.2 |  |  | $ | 2,151.9 |
Revenues from contracts with customers | Natural gas |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | The following tables disaggregate natural gas utility operating revenues into customer class for the three and six months ended June 30, 2018:
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Natural Gas Utility Operations
Three Months Ended June 30, 2018 |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 128.1 |  |  | $ | 163.7 |  |  | $ | 37.9 |  |  | $ | 329.7 |
Commercial and industrial |  | 63.5 |  |  | 47.3 |  |  | 18.7 |  |  | 129.5 |
Total retail revenues |  | 191.6 |  |  | 211.0 |  |  | 56.6 |  |  | 459.2 |
Transport |  | 16.4 |  |  | 54.6 |  |  | 6.8 |  |  | 77.8 |
Other utility revenues * |  | 28.4 |  |  | 8.2 |  |  | 5.5 |  |  | 42.1 |
Total natural gas utility operating revenues |  | $ | 236.4 |  |  | $ | 273.8 |  |  | $ | 68.9 |  |  | $ | 579.1 |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Natural Gas Utility Operations
Six Months Ended June 30, 2018 |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 484.8 |  |  | $ | 496.3 |  |  | $ | 161.1 |  |  | $ | 1,142.2 |
Commercial and industrial |  | 251.4 |  |  | 156.7 |  |  | 83.4 |  |  | 491.5 |
Total retail revenues |  | 736.2 |  |  | 653.0 |  |  | 244.5 |  |  | 1,633.7 |
Transport |  | 37.4 |  |  | 132.3 |  |  | 16.7 |  |  | 186.4 |
Other utility revenues * |  | (19.2 | ) |  | (3.9 | ) |  | (19.6 | ) |  | (42.7 | )
Total natural gas utility operating revenues |  | $ | 754.4 |  |  | $ | 781.4 |  |  | $ | 241.6 |  |  | $ | 1,777.4 |
* | 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) |  | Three Months Ended June 30, 2018 |  | Six Months Ended June 30, 2018
We Power revenues |  | $ | 6.2 |  |  | $ | 12.6 |
Appliance service revenues |  | 3.9 |  |  | 7.8 |
Distributed renewable solar project revenues |  | 2.8 |  |  | 4.1 |
Other |  | 0.1 |  |  | 0.1 |
Total other non-utility operating revenues |  | $ | 13.0 |  |  | $ | 24.6 |
Other operating revenues |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | Other operating revenues consist primarily of the following:
(in millions) |  | Three Months Ended June 30, 2018 |  | Six Months Ended June 30, 2018
Alternative revenues * |  | $ | (14.2 | ) |  | $ | (30.3 | )
Late payment charges |  | 11.1 |  |  | 22.5 |
Leases |  | 2.0 |  |  | 3.2 |
Total other operating revenues |  | $ | (1.1 | ) |  | $ | (4.6 | )
* | 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 below.

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