Summary of KWh Energy Sales for Transmission and Distribution Utilities Years Ended December 31, 2020 2019 2018 (in millions of KWhs) Retail: Residential 26,518  26,407  27,042  Commercial 23,998  25,018  24,877  Industrial 22,432  23,289  23,908  Miscellaneous 749  779  760  Total Retail (a) 73,697  75,493  76,587  Wholesale (b) 1,859  2,335  2,441  Total KWhs 75,556  77,828  79,028  (a) Represents energy delivered to distribution customers. (b) Primarily Ohio’s contractually obligated purchases of OVEC power sold into PJM. 88