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Operating Revenues (Tables) | 12 Months Ended
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Dec. 31, 2020
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Year ended December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electric |  | $ | 4,266.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,266.1 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,266.1 |
Natural gas |  | 1,195.6 |  |  | 1,267.9 |  |  | 361.0 |  |  | 2,824.5 |  |  | 44.4 |  |  | — |  |  | (42.0) |  |  | 2,826.9 |
Total regulated revenues |  | 5,461.7 |  |  | 1,267.9 |  |  | 361.0 |  |  | 7,090.6 |  |  | 44.4 |  |  | — |  |  | (42.0) |  |  | 7,093.0 |
Other non-utility revenues |  | — |  |  | — |  |  | 17.1 |  |  | 17.1 |  |  | 66.6 |  |  | 1.7 |  |  | (9.1) |  |  | 76.3 |
Total revenues from contracts with customers |  | 5,461.7 |  |  | 1,267.9 |  |  | 378.1 |  |  | 7,107.7 |  |  | 111.0 |  |  | 1.7 |  |  | (51.1) |  |  | 7,169.3 |
Other operating revenues |  | 11.8 |  |  | 54.0 |  |  | 6.0 |  |  | 71.8 |  |  | 397.5 |  |  | 0.5 |  |  | (397.4) |  |  | 72.4 |
Total operating revenues |  | $ | 5,473.5 |  |  | $ | 1,321.9 |  |  | $ | 384.1 |  |  | $ | 7,179.5 |  |  | $ | 508.5 |  |  | $ | 2.2 |  |  | $ | (448.5) |  |  | $ | 7,241.7 |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | Non-Utility Energy Infrastructure |  | Corporate and Other |  | Reconciling Eliminations |  | WEC Energy Group Consolidated
Year ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electric |  | $ | 4,307.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,307.7 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,307.7 |
Natural gas |  | 1,324.1 |  |  | 1,332.4 |  |  | 411.6 |  |  | 3,068.1 |  |  | 47.4 |  |  | — |  |  | (44.1) |  |  | 3,071.4 |
Total regulated revenues |  | 5,631.8 |  |  | 1,332.4 |  |  | 411.6 |  |  | 7,375.8 |  |  | 47.4 |  |  | — |  |  | (44.1) |  |  | 7,379.1 |
Other non-utility revenues |  | — |  |  | 0.1 |  |  | 16.6 |  |  | 16.7 |  |  | 55.2 |  |  | 4.0 |  |  | (5.7) |  |  | 70.2 |
Total revenues from contracts with customers |  | 5,631.8 |  |  | 1,332.5 |  |  | 428.2 |  |  | 7,392.5 |  |  | 102.6 |  |  | 4.0 |  |  | (49.8) |  |  | 7,449.3 |
Other operating revenues |  | 15.3 |  |  | 24.6 |  |  | (2.2) |  |  | 37.7 |  |  | 393.3 |  |  | 0.4 |  |  | (357.6) |  |  | 73.8 |
Total operating revenues |  | $ | 5,647.1 |  |  | $ | 1,357.1 |  |  | $ | 426.0 |  |  | $ | 7,430.2 |  |  | $ | 495.9 |  |  | $ | 4.4 |  |  | $ | (407.4) |  |  | $ | 7,523.1 |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Utility Operations |  | 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 regulated 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 |
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
|  | Year Ended December 31
(in millions) |  | 2020 |  | 2019 |  | 2018
Residential |  | $ | 1,743.9 |  |  | $ | 1,608.6 |  |  | $ | 1,636.3 |
Small commercial and industrial |  | 1,325.9 |  |  | 1,384.6 |  |  | 1,408.6 |
Large commercial and industrial |  | 821.5 |  |  | 871.9 |  |  | 912.2 |
Other |  | 29.0 |  |  | 29.6 |  |  | 29.9 |
Total retail revenues |  | 3,920.3 |  |  | 3,894.7 |  |  | 3,987.0 |
Wholesale |  | 174.0 |  |  | 189.5 |  |  | 210.1 |
Resale |  | 130.4 |  |  | 163.1 |  |  | 192.2 |
Steam |  | 21.3 |  |  | 23.3 |  |  | 24.1 |
Other utility revenues |  | 20.1 |  |  | 37.1 |  |  | 19.0 |
Total electric utility operating revenues |  | $ | 4,266.1 |  |  | $ | 4,307.7 |  |  | $ | 4,432.4 |
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:
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Natural Gas Utility Operating Revenues
Year ended December 31, 2020 |  |  |  |  |  |  |  |
Residential |  | $ | 752.6 |  |  | $ | 802.2 |  |  | $ | 220.8 |  |  | $ | 1,775.6 |
Commercial and industrial |  | 338.1 |  |  | 221.0 |  |  | 115.8 |  |  | 674.9 |
Total retail revenues |  | 1,090.7 |  |  | 1,023.2 |  |  | 336.6 |  |  | 2,450.5 |
Transport |  | 79.1 |  |  | 215.6 |  |  | 31.5 |  |  | 326.2 |
Other utility revenues (1) |  | 25.8 |  |  | 29.1 |  |  | (7.1) |  |  | 47.8 |
Total natural gas utility operating revenues |  | $ | 1,195.6 |  |  | $ | 1,267.9 |  |  | $ | 361.0 |  |  | $ | 2,824.5 |
(in millions) |  | Wisconsin |  | Illinois |  | Other States |  | Total Natural Gas Utility Operating Revenues
Year ended December 31, 2019 |  |  |  |  |  |  |  |
Residential |  | $ | 837.9 |  |  | $ | 857.8 |  |  | $ | 258.2 |  |  | $ | 1,953.9 |
Commercial and industrial |  | 419.9 |  |  | 261.7 |  |  | 148.7 |  |  | 830.3 |
Total retail revenues |  | 1,257.8 |  |  | 1,119.5 |  |  | 406.9 |  |  | 2,784.2 |
Transport |  | 72.6 |  |  | 245.3 |  |  | 31.6 |  |  | 349.5 |
Other utility revenues (1) |  | (6.3) |  |  | (32.4) |  |  | (26.9) |  |  | (65.6) |
Total natural gas utility operating revenues |  | $ | 1,324.1 |  |  | $ | 1,332.4 |  |  | $ | 411.6 |  |  | $ | 3,068.1 |
(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 (1) |  | 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 |
(1) 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:
|  | Year Ended December 31
(in millions) |  | 2020 |  | 2019 |  | 2018
Wind generation revenues |  | $ | 34.6 |  |  | $ | 24.0 |  |  | $ | 3.6 |
We Power revenues |  | 22.9 |  |  | 25.4 |  |  | 25.3 |
Appliance service revenues |  | 17.1 |  |  | 16.6 |  |  | 15.9 |
Distributed renewable solar project revenues |  | 1.4 |  |  | 4.0 |  |  | 8.0 |
Other |  | 0.3 |  |  | 0.2 |  |  | 0.2 |
Total other non-utility operating revenues |  | $ | 76.3 |  |  | $ | 70.2 |  |  | $ | 53.0 |
Other operating revenues |
Disaggregation of Operating Revenues |
Operating revenues disaggregated by revenue source | Other operating revenues consist primarily of the following:
|  | Year Ended December 31
(in millions) |  | 2020 |  | 2019 |  | 2018
Alternative revenues (1) |  | $ | 38.8 |  |  | $ | (9.6) |  |  | $ | (45.6) |
Late payment charges (2) |  | 29.4 |  |  | 43.7 |  |  | 40.3 |
Other |  | 4.2 |  |  | 39.7 |  |  | 4.5 |
Total other operating revenues |  | $ | 72.4 |  |  | $ | 73.8 |  |  | $ | (0.8) |
(1) 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, wholesale true-ups, conservation improvement rider true-ups, and certain late payment charges, as discussed in Note 1(d), Operating Revenues. (2) The reduction in late payment charges is a result of various regulatory orders from our utility commissions in response to the COVID-19 pandemic, which include the suspension of late payment charges during a designated time period. PGL and NSG were authorized to implement a SPC rider for the recovery of these late payment charges related to COVID-19, thereby allowing them to record these late payment charges as alternative revenues. The total amount of late payment charges recorded as alternative revenues during the year ended December 31, 2020 was $8.5 million. See Note 26, Regulatory Environment, for more information.

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