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CONSOLIDATED STATEMENT OF CASH FLOWS - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
CASH FLOW FROM OPERATIONS      
Net income for the year from continuing operations R$ 2,865 R$ 2,969 [1] R$ 1,401 [1]
Net income for the year from discontinuing operations 224 [1] 363 [1]
Adjustments to reconcile net income to net cash flows:      
Deferred income tax and social contribution tax 252    
Depreciation and amortization 989    
Loss on write-off of net residual value of unrecoverable concession financial assets, concessional contract asset, PP&E and Intangible assets 39    
Impairment of contract asset and intangible assets (12)    
Share of (gain) loss, net, of subsidiaries and joint ventures (357)    
Periodic Tariff Review adjustments (552)    
Result of business combination (51)    
Dividends declared by investee classified as held for sale    
Impairment loss on investments    
Generation indemnity revenue    
Reimbursement of PIS/Pasep and Cofins over ICMS credits to customers - realization [2] (266)    
Remeasuring of concession financial and concession contract assets (801)    
Interest and monetary variation 1,202    
Recognition of PIS/Pasep and Cofins taxes credits over ICMS    
Exchange variation on loans 1,742    
Appropriation of transaction costs 15    
Provisions for operating losses 423   466 [1]
Provision for reimbursement for suspension of energy supply - Renova    
Net gain on derivative instruments at fair value through profit or loss (1,753)    
CVA (Parcel A items Compensation) Account and Other financial components in tariff adjustments (455)    
Post-employment obligations 491    
Others 57    
Working capital adjustments 3,827    
Receivables from customers and traders and Concession holders - Transport of electricity (78)    
CVA and Other financial components in tariff adjustments 1,467    
Recoverable taxes (59)    
Income tax and social contribution tax credits (162)    
Escrow deposits 1,538    
Dividends received from investees 387    
Concession contract and financial assets 688    
Others 187    
Total (increase) / decrease in assets 3,968    
Increase (decrease) in liabilities      
Suppliers 278    
Taxes payable 824    
Income tax and social contribution tax payable 690    
Payroll and related charges 13    
Regulatory charges 132    
Advances from customers    
Post-employment obligations (367)    
Derivative financial instruments - Put options    
Others 106    
Total increase (decrease) in liabilities 1,676    
Cash generated by operating activities 9,471    
Interest paid on loans, financing and debentures (1,081)    
Interest paid on leasing contracts (4) (5)  
Income tax and social contribution tax paid (240)    
Cash inflows from settlement of derivatives instruments 461    
Net cash flows from continuing operating activities 8,607    
Net cash flows used in discontinued operating activities    
NET CASH FLOWS FROM OPERATING ACTIVITIES 8,607    
INVESTING ACTIVITIES      
Marketable securities (3,368)    
Restricted cash (51)    
Investments      
Acquisition of equity investees    
Capital contributions in investees (120)    
Cash arising from business combination 27    
Loans to related parties (27)    
Property, plant and equipment (132)    
Intangible assets (41)    
Contract assets - distribution of gas and energy infrastructure (1,364)    
Net cash flows used in continuing investment activities (5,076)    
Net cash flows from discontinued investment activities    
NET CASH FLOWS USED IN INVESTING ACTIVITIES (5,076)    
FINANCING ACTIVITIES      
Proceeds from Loans, financings and debentures, net from transaction costs 826    
Interest on capital and dividends paid (598)    
Capital increase    
Payment of loans, financing and debentures (2,531)    
Payment of principal portion of lease liabilities (84)    
NET CASH FLOWS USED IN FINANCING ACTIVITIES (2,387)    
Net (decrease) increase in cash and cash equivalents for the year 1,144    
Cash and cash equivalents at the beginning of the year [1] 536    
Cash and cash equivalents at the end of the year 1,680 536 [1]  
Restated [member]      
CASH FLOW FROM OPERATIONS      
Net income for the year from continuing operations [3]   2,971 1,401
Net income for the year from discontinuing operations [3]   224 363
Adjustments to reconcile net income to net cash flows:      
Deferred income tax and social contribution tax [3]   145 27
Depreciation and amortization [3]   958 850
Loss on write-off of net residual value of unrecoverable concession financial assets, concessional contract asset, PP&E and Intangible assets [3]   125 61
Impairment of contract asset and intangible assets [3]   24 42
Share of (gain) loss, net, of subsidiaries and joint ventures [3]   (125) 104
Periodic Tariff Review adjustments [3]  
Result of business combination [3]   119
Dividends declared by investee classified as held for sale [3]   (73)
Impairment loss on investments [3]   127
Generation indemnity revenue [3]   (55)
Reimbursement of PIS/Pasep and Cofins over ICMS credits to customers - realization [3]  
Remeasuring of concession financial and concession contract assets [3]   (756) (677)
Interest and monetary variation [3]   1,190 1,207
Recognition of PIS/Pasep and Cofins taxes credits over ICMS [3]   (2,952)
Exchange variation on loans [3]   226 582
Appropriation of transaction costs [3]   38 33
Provisions for operating losses [3]   2,401 466
Provision for reimbursement for suspension of energy supply - Renova [3]   (60)
Net gain on derivative instruments at fair value through profit or loss [3]   (998) (893)
CVA (Parcel A items Compensation) Account and Other financial components in tariff adjustments [3]   (58) (1,973)
Post-employment obligations [3]   465 405
Others [3]   (9) (28)
Working capital adjustments [3]   3,796 2,101
Receivables from customers and traders and Concession holders - Transport of electricity [3]   (666) (391)
CVA and Other financial components in tariff adjustments [3]   362 909
Recoverable taxes [3]   (12) 38
Income tax and social contribution tax credits [3]   (71) 615
Escrow deposits [3]   11 (109)
Dividends received from investees [3]   283 311
Concession contract and financial assets [3]   511 1,761
Others [3]   26 77
Total (increase) / decrease in assets [3]   444 3,211
Increase (decrease) in liabilities      
Suppliers [3]   279 (553)
Taxes payable [3]   (162) (291)
Income tax and social contribution tax payable [3]   1,433 (6)
Payroll and related charges [3]   (84) 77
Regulatory charges [3]   (89) (70)
Advances from customers [3]   (81) (153)
Post-employment obligations [3]   (343) (307)
Derivative financial instruments - Put options [3]   (555)
Others [3]   4 (165)
Total increase (decrease) in liabilities [3]   957 (2,023)
Cash generated by operating activities [3]   5,197 3,289
Interest paid on loans, financing and debentures [3]   (1,265) (1,290)
Interest paid on leasing contracts [3]   (5)
Income tax and social contribution tax paid [3]   (1,767) (650)
Cash inflows from settlement of derivatives instruments [3]   100 37
Net cash flows from continuing operating activities [3]   2,260 1,386
Net cash flows used in discontinued operating activities [3]   (224) (378)
NET CASH FLOWS FROM OPERATING ACTIVITIES [3]   2,036 1,008
INVESTING ACTIVITIES      
Marketable securities [3]   79 276
Restricted cash [3]   79 15
Investments      
Acquisition of equity investees [3]   (109)
Capital contributions in investees [3]   (38) (241)
Cash arising from business combination [3]   71
Loans to related parties [3]   (6)
Property, plant and equipment [3]   (70) (77)
Intangible assets [3]   (932) (801)
Contract assets - distribution of gas and energy infrastructure [3]   (925)
Net cash flows used in continuing investment activities [3]   (1,813) (866)
Net cash flows from discontinued investment activities [3]   625 655
NET CASH FLOWS USED IN INVESTING ACTIVITIES [3]   (1,188) (211)
FINANCING ACTIVITIES      
Proceeds from Loans, financings and debentures, net from transaction costs [3]   4,477 2,990
Interest on capital and dividends paid [3]   (701) (509)
Capital increase [3]   110
Payment of loans, financing and debentures [3]   (4,883) (3,527)
Payment of principal portion of lease liabilities [3]   (96)
NET CASH FLOWS USED IN FINANCING ACTIVITIES [3]   (1,203) (936)
Net (decrease) increase in cash and cash equivalents for the year [3]   (355) (139)
Cash and cash equivalents at the beginning of the year [3] R$ 536 891 1,030
Cash and cash equivalents at the end of the year [3]   R$ 536 R$ 891
[1] See note 2.8.
[2] For more information, see note 9 from this financial statements.
[3] For further details of restatement of comparative balances, see Note 2.8