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Segment Reporting
9 Months Ended
Sep. 30, 2020
Segment Reporting [Abstract]  
Segment Reporting Segment Reporting
As part of perfecting the integrated model, in which the majority of the Company’s generation serves its retail customers, the Company began managing its operations based on the combined results of the retail and wholesale generation businesses with a geographical focus in 2020. As a result, the Company changed its business segments from Retail and Generation to Texas, East and West/Other beginning in the first quarter of 2020, as further described in Note 1, Nature of Business. The Company's updated segment structure reflects how management currently makes financial decisions and allocates resources The financial information for the three and nine months ended September 30, 2019 was recast to reflect the current segment structure.
In February 2019, as described in Note 4, Acquisitions, Discontinued Operations and Dispositions, the Company completed the sales of the South Central Portfolio and Carlsbad. The financial information for the three and nine months ended September 30, 2019 presented below reflects the presentation of these entities as discontinued operations within the corporate segment.
NRG’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, free cash flow and allocation of capital, as well as net income/(loss).
Three months ended September 30, 2020
(In millions)TexasEastWest/OtherCorporateEliminationsTotal
Operating revenues
$1,992 $693 $122 $— $$2,809 
Depreciation and amortization
49 34 — 99 
Impairment losses
— — 29 — — 29 
Equity in earnings of unconsolidated affiliates
— — 36 — — 36 
Income/(loss) from continuing operations before income taxes288 149 17 (113)— 341 
Income/(loss) from continuing operations288 149 17 (205)— 249 
Net income/(loss) attributable to NRG Energy, Inc$288 $149 $17 $(205)$ $249 
Three months ended September 30, 2019
(In millions)TexasEastWest/OtherCorporateEliminationsTotal
Operating revenues
$2,208 $679 $111 $— $(2)$2,996 
Depreciation and amortization
45 31 — 91 
Equity in earnings of unconsolidated affiliates
— 28 — — 29 
Income/(loss) from continuing operations before income taxes
348 121 16 (106)380 
Income/(loss) from continuing operations 348 121 15 (111)374 
Loss from discontinued operations, net of tax
— — — (2)— (2)
Net income/(loss)
348 121 15 (113)372 
Net income/(loss) attributable to NRG Energy, Inc.
$348 $121 $15 $(113)$1 $372 

Nine months ended September 30, 2020
(In millions)TexasEastWest/OtherCorporateEliminationsTotal
Operating revenues$4,928 $1,798 $341 $— $(1)$7,066 
Depreciation and amortization167 100 25 26 — 318 
Impairment losses— — 29 — — 29 
Gain on sale of assets— — — 
Equity in (losses)/earnings of unconsolidated affiliates(3)— 40 — — 37 
Income/(loss) from continuing operations before income taxes800 319 84 (304)— 899 
Income/(loss) from continuing operations800 319 83 (519)— 683 
Net income/(loss) attributable to NRG Energy, Inc$800 $319 $83 $(519)$ $683 

Nine months ended September 30, 2019
(In millions)TexasEastWest/OtherCorporateEliminationsTotal
Operating revenues$5,511 $1,812 $310 $— $(7)$7,626 
Depreciation and amortization125 87 26 23 — 261 
Reorganization costs— — 11 — 16 
Gain on sale of assets— — — 
Equity in (losses)/earnings of unconsolidated affiliates(5)— 13 — — 
Loss on debt extinguishment, net— — — (47)— (47)
Income/(loss) from continuing operations before income taxes757 280 11 (382)— 666 
Income/(loss) from continuing operations757 280 10 (390)— 657 
Income from discontinued operations, net of tax— — — 399 — 399 
Net income757 280 10 — 1,056 
Net income attributable to NRG Energy, Inc.$757 $280 $9 $9 $ $1,055