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CONSOLIDATED STATEMENT OF CASH FLOWS - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
CASH FLOW FROM OPERATIONS      
Net income for the year from continuing operations R$ 2,904 R$ 1,379 R$ 1,002
Net income for the year from discontinuing operations 224 363
Net income for the year 3,128 1,742 1,002
Adjustments to reconcile net income to net cash flows:      
Non-controlling interests (1) (42) (1)
Deferred income tax and social contribution tax 111 16 198
Depreciation and amortization 958 850 850
Loss on write-off of net residual value of unrecoverable concession financial assets, concessional contract asset, PP&E and Intangible assets 130 61 48
Impairment of concession contract assets and intangible assets 24 42
Gain on sale of investments (197)
Adjustment to Remuneration Assets Base - BRR for transmission assets (75)
Share of (gain) loss, net, of subsidiaries and joint ventures (125) 104 252
Dividends declared by investee classified as held for sale (73)
Remeasurement of previously held equity interest in subsidiaries acquired 119
Impairment loss on Investments 127
Generation Indemnity Revenue (55) (271)
Remeasuring of concession financial and concession contract assets (507) (585) (753)
Interest and monetary variation 1,190 1,207 1,498
Recovery of PIS/Pasep and Cofins taxes credits over ICMS (2,952)
Exchange variation on loans 226 582 56
Reversal of monetary updating on Advance for Future Capital Increase - AFAC (239)
Tax Amnesty Program (PRCT) 283
Appropriation of transaction costs 38 33 67
Provisions for operating losses 2,401 466 854
Provision for reimbursement for suspension of energy supply - Renova (60)
Net gain on derivative instruments at fair value through profit or loss (998) (893) 32
CVA (Parcel A items Compensation) Account and Other financial components in tariff adjustments (58) (1,973) (988)
Post-employment obligations 464 405 (164)
Others (22) 12
Working capital adjustments 3,934 2,158 2,452
(Increase) / decrease in assets      
Receivables from customers and traders and Concession holders - Transport of electricity (666) (391) (818)
Accounts Receivable from the State of Minas Gerais 46
CVA and Other financial components in tariff adjustments 362 909 586
Recoverable taxes (12) 38 10
Income tax and social contribution tax credits (71) 615 385
Escrow deposits 11 (109) (4)
Dividends received from investees 283 311 354
Concession contract and financial assets 373 1,704 398
Advances to suppliers 54 29 (116)
Others (28) 48 649
Total (increase) / decrease in assets 306 3,154 1,490
Increase (decrease) in liabilities      
Suppliers 279 (553) 403
Taxes payable (162) (291) (248)
Income tax and social contribution tax payable 1,433 (6) 14
Payroll and related charges (84) 77 (18)
Regulatory charges (89) (70) (73)
Advances from customers (81) (153) 52
Post-employment obligations (343) (307) (282)
Derivative financial instruments - Put options (555) (830)
Others 4 (165) (357)
Total increase (decrease) in liabilities 957 (2,023) (1,339)
Cash generated by operating activities 5,197 3,289 2,603
Interest paid on loans and financing (1,265) (1,290) (1,797)
Interest paid on leasing contracts (5)
Income tax and social contribution tax paid (1,767) (650) (226)
Cash inflows from settlement of derivatives instruments 100 37
Net cash flows from continuing operating activities 2,260 1,386 580
Net cash flows used in discontinued operating activities (224) (378)
NET CASH FLOWS FROM OPERATING ACTIVITIES 2,036 1,008 580
INVESTING ACTIVITIES      
Marketable securities 80 276 (4)
Restricted cash 79 15 261
Investments      
Acquisition of equity investees (109) (38)
Capital contributions in investees (38) (241) (254)
Cash arising from business combination 71
Disposal of investments 766
Loans to related parties (7)
Property, plant and equipment (70) (77) (83)
Intangible assets and contract assets - gas and distribution of energy infrastructure (1,857) (801) (1,034)
Net cash flows used in continuing investment activities (1,813) (866) (386)
Net cash flows from discontinued investment activities 625 655
NET CASH FLOWS USED IN INVESTING ACTIVITIES (1,188) (211) (386)
FINANCING ACTIVITIES      
Subscription of shares, to be capitalized 1,215
Proceeds from Loans, financings and debentures 4,477 2,990 3,308
Interest on capital and dividends paid (701) (509) (540)
Capital increase 110
Borrowing costs (11)
Payment of loans, financing and debentures (4,883) (3,527) (4,131)
Payment of principal portion of lease liabilities (96)
NET CASH FLOWS USED IN FINANCING ACTIVITIES (1,203) (936) (159)
Net (decrease) increase in cash and cash equivalents for the year (355) (139) 35
Cash and cash equivalents at the beginning of the year 891 1,030 995
Cash and cash equivalents at the end of the year R$ 536 R$ 891 R$ 1,030