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Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows — operating activities: |  |  |
Net income (loss) | $ 1,492 | $ (1,210) | $ (1,264)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 1,956 | 2,047 | 2,050
Deferred income tax expense (benefit), net | 457 | (359) | (475)
Gain on sale of land | (95) | (8) | (9)
Impairment of long-lived and other assets | 49 | 74 | 71
Unrealized net (gain) loss from mark-to-market valuations of commodities | (490) | 2,510 | 759
Unrealized net (gain) loss from mark-to-market valuations of interest rate swaps | 36 | (250) | (134)
Change in asset retirement obligation liability | 27 | 13 | (5)
Asset retirement obligation accretion expense | 34 | 34 | 38
Impacts of Tax Receivable Agreement | 164 | 128 | (53)
Gain on TRA settlement | (29) | 0 | 0
Bad debt expense | 164 | 179 | 110
Stock-based compensation | 77 | 63 | 47
Other, net | 103 | (71) | 50
Changes in operating assets and liabilities: |  |  |
Accounts receivable — trade | 214 | (852) | (228)
Inventories | (174) | 36 | (100)
Accounts payable — trade | (350) | 94 | 402
Commodity and other derivative contractual assets and liabilities | 82 | (228) | 32
Margin deposits, net | 1,899 | (1,874) | (1,000)
Uplift securitization proceeds receivable from ERCOT | 0 | 544 | (544)
Accrued interest | 46 | 16 | 13
Accrued taxes | 5 | (8) | (20)
Accrued employee incentive | 58 | 21 | (68)
Tax Receivable Agreement payment | (9) | (1) | (2)
Asset retirement obligation settlement | (81) | (87) | (88)
Major plant outage deferral | (32) | 20 | 2
Other — net assets | 84 | (17) | (27)
Other — net liabilities | (243) | (330) | 235
Cash provided by (used in) operating activities | 5,453 | 485 | (206)
Cash flows — investing activities: |  |  |
Capital expenditures, including nuclear fuel purchases and LTSA prepayments | (1,676) | (1,301) | (1,033)
Proceeds from sales of nuclear decommissioning trust fund securities | 601 | 670 | 483
Investments in nuclear decommissioning trust fund securities | (624) | (693) | (505)
Proceeds from sales of environmental allowances | 500 | 1,275 | 392
Purchases of environmental allowances | (1,071) | (1,303) | (605)
Insurance proceeds | 15 | 39 | 89
Proceeds from sales of property, plant and equipment | 115 | 78 | 30
Other, net | (5) | (4) | (4)
Cash used in investing activities | (2,145) | (1,239) | (1,153)
Cash flows — financing activities: |  |  |
Issuances of preferred stock | 0 | 0 | 2,000
Issuances of long-term debt | 2,498 | 1,498 | 1,250
Repayments/repurchases of debt | (33) | (251) | (381)
Borrowings under Term Loan A | 0 | 0 | 1,250
Repayment under Term Loan A | 0 | 0 | (1,250)
Proceeds from forward capacity agreement | 0 | 0 | 500
Net borrowings/(repayments) under accounts receivable financing | (425) | 425 | (300)
Borrowings under Revolving Credit Facility | 100 | 1,750 | 1,450
Repayments under Revolving Credit Facility | (350) | (1,500) | (1,450)
Borrowings under Commodity-Linked Facility | 0 | 3,150 | 0
Repayments under Commodity-Linked Facility | (400) | (2,750) | 0
Debt issuance costs | (59) | (31) | (13)
Stock repurchases | (1,245) | (1,949) | (471)
Dividends paid to common stockholders | (313) | (302) | (290)
Dividends paid to preferred stockholders | (150) | (151) | 0
Other, net | 83 | 31 | (21)
Cash provided by (used in) financing activities | (294) | (80) | 2,274
Net change in cash, cash equivalents and restricted cash | 3,014 | (834) | 915
Cash, cash equivalents and restricted cash — beginning balance | 525 | 1,359 | 444
Cash, cash equivalents and restricted cash — ending balance | $ 3,539 | $ 525 | $ 1,359

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