Segment Reporting The Companys segment structure reflects how management currently operates and allocates resources. The Company's businesses are segregated based on conventional power generation, renewable businesses which consist of solar and wind, and the thermal and chilled water business. The Corporate segment reflects the Company's corporate costs. The Company's chief operating decision maker, its Chief Executive Officer, evaluates the performance of its segments based on operational measures including adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, and CAFD, as well as economic gross margin and net income (loss). Three months ended June 30, 2020 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 107 $ 180 $ 42 $  $ 329 Cost of operations 22 39 26  87 Depreciation, amortization and accretion 33 59 7  99 General and administrative  1 2 9 12 Development costs   1  1 Operating income (loss) 52 81 6 (9) 130 Equity in earnings of unconsolidated affiliates 1 15   16 Gain on sale of unconsolidated affiliate    49 49 Interest expense (22) (42) (5) (24) (93) Income before income taxes 31 54 1 16 102 Income tax expense    26 26 Net Income (Loss) $ 31 $ 54 $ 1 $ (10) $ 76 Total Assets $ 2,674 $ 6,290 $ 613 $ 159 $ 9,736 Three months ended June 30, 2019 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 84 $ 153 $ 47 $  $ 284 Cost of operations 13 35 30  78 Depreciation, amortization and accretion 25 58 7  90 Impairment losses   19  19 General and administrative    7 7 Acquisition-related transaction and integration costs    1 1 Development costs   2  2 Operating income (loss) 46 60 (11) (8) 87 Equity in earnings of unconsolidated affiliates 2 9   11 Other income, net  1   1 Loss on debt extinguishment  (1)   (1) Interest expense (16) (89) (4) (21) (130) Income (loss) before income taxes 32 (20) (15) (29) (32) Income tax expense    4 4 Net Income (Loss) $ 32 $ (20) $ (15) $ (33) $ (36) Six months ended June 30, 2020 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 210 $ 287 $ 90 $  $ 587 Cost of operations 46 75 59  180 Depreciation, amortization and accretion 66 121 14  201 General and administrative  1 3 17 21 Acquisition-related transaction and integration costs    1 1 Development costs   2  2 Operating income (loss) 98 90 12 (18) 182 Equity in earnings (losses) of unconsolidated affiliates 3    3 Gain on sale of unconsolidated affiliate    49 49 Other income, net  1 1  2 Loss on debt extinguishment    (3) (3) Interest expense (52) (151) (10) (47) (260) Income (loss) before income taxes 49 (60) 3 (19) (27) Income tax expense    4 4 Net Income (Loss) $ 49 $ (60) $ 3 $ (23) $ (31) Six months ended June 30, 2019 (In millions) Conventional Generation Renewables Thermal Corporate Total Operating revenues $ 163 $ 241 $ 97 $  $ 501 Cost of operations 30 67 63  160 Depreciation, amortization and accretion 50 113 13  176 Impairment losses   19  19 General and administrative   1 12 13 Acquisition-related transaction and integration costs    2 2 Development costs   3  3 Operating income (loss) 83 61 (2) (14) 128 Equity in earnings of unconsolidated affiliates 4 10   14 Other income, net 1 2  1 4 Loss on debt extinguishment  (1)   (1) Interest expense (32) (148) (8) (43) (231) Income (loss) before income taxes 56 (76) (10) (56) (86) Income tax benefit    (3) (3) Net Income (Loss) $ 56 $ (76) $ (10) $ (53) $ (83)