Years Ended December 31, Description 2018 2017 2016 (in millions) Retail Revenues Residential Sales $ 736.5 $ 620.9 $ 620.4 Commercial Sales 494.6 442.7 440.1 Industrial Sales 565.3 518.1 510.0 PJM Net Charges 0.2 (1.0) 0.1 Other Retail Sales 7.2 7.1 7.1 Total Retail Revenues 1,803.8 1,587.8 1,577.7 Wholesale Revenues Off-system Sales 459.3 431.2 446.6 Transmission 18.4 17.2 23.9 Total Wholesale Revenues 477.7 448.4 470.5 Other Electric Revenues 15.7 13.5 15.2 Provision for Rate Refund (24.6) (7.2) (1.1) Total Electric Generation, Transmission and Distribution Revenues 2,272.6 2,042.5 2,062.3 Sales to Affiliates 85.5 64.4 88.3 Other Revenues 12.6 14.3 17.0 Total Revenues $ 2,370.7 $ 2,121.2 $ 2,167.6 Years Ended December 31, Description 2018 2017 2016 (in millions) Retail Revenues Residential Sales $ 1,618.9 $ 1,511.3 $ 1,665.0 Commercial Sales 840.2 776.1 785.0 Industrial Sales 386.2 365.9 395.0 Other Retail Sales 13.0 13.2 14.0 Total Retail Revenues 2,858.3 2,666.5 2,859.0 Wholesale Revenues Off-system Sales 119.3 100.5 131.0 Transmission 61.4 65.8 68.9 Total Wholesale Revenues 180.7 166.3 199.9 Other Electric Revenues 32.7 31.0 30.5 Provision for Rate Refund (37.9 ) (10.3 ) (159.3 ) Total Electricity, Transmission and Distribution Revenues 3,033.8 2,853.5 2,930.1 Sales to Affiliates 21.0 24.4 17.3 Other Revenues 8.6 6.0 6.5 Total Revenues $ 3,063.4 $ 2,883.9 $ 2,953.9 Years Ended December 31, Description 2018 2017 2016 (in millions) Retail Revenues Residential Sales $ 668.5 $ 601.4 $ 538.0 Commercial Sales 411.3 398.5 348.6 Industrial Sales 298.6 273.4 220.6 Other Retail Sales 84.2 80.9 70.8 Total Retail Revenues 1,462.6 1,354.2 1,178.0 Wholesale Revenues Off-system Sales 36.3 13.9 13.1 Transmission 47.4 42.3 38.3 Total Wholesale Revenues 83.7 56.2 51.4 Other Electric Revenues 10.3 8.5 14.9 Provision for Rate Refund (19.0 ) (1.4 ) (0.1 ) Total Electric Generation, Transmission and Distribution Revenues 1,537.6 1,417.5 1,244.2 Sales to Affiliates 5.4 4.3 3.1 Other Revenues 4.3 5.4 4.4 Total Revenues $ 1,547.3 $ 1,427.2 $ 1,251.7 7 I&M OPCo PSO