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9 Net Sectorial Financial Assets and Liabilities (Details 1) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | R$ 371,705 | R$ 582,288
Operating revenues, constitution | 836,048 | 515,934
Operating revenues, amortization | (89,996) | (490,877)
Financial results, updating | 20,106 | 41,625
Write-offs Covid Account | (869,516) |
Rate flags | (110,126) | (277,265)
Net sectorial financial assets and liabilities, ending | 158,221 | 371,705
Sectorial financial assets, current | 173,465 | 355,570
Sectorial financial assets, noncurrent | 173,465 | 118,419
Sectorial financial liabilities, current | (188,709) |
Sectorial financial liabilities, noncurrent |  | (102,284)
Adjusting portion A [member] | Electricity purchased for resale - itaipu [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 793,327 | 886,243
Operating revenues, constitution | 893,581 | 533,057
Operating revenues, amortization | (354,300) | (670,501)
Financial results, updating | 28,197 | 44,528
Write-offs Covid Account | (897,629) |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | 463,176 | 793,327
Adjusting portion A [member] | Electricity purchased for resale - cva energ [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 265,788 | 626,891
Operating revenues, constitution | (242,246) | 358,200
Operating revenues, amortization | (253,482) | (546,801)
Financial results, updating | 1,076 | 29,909
Write-offs Covid Account | 164,804 |
Rate flags | (35,993) | (202,411)
Net sectorial financial assets and liabilities, ending | (100,053) | 265,788
Adjusting portion A [member] | Transport of energy using the transmission system - basic grid [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 13,038 | (30,514)
Operating revenues, constitution | 265,030 | 22,917
Operating revenues, amortization | 48,154 | 23,688
Financial results, updating | 1,715 | (3,053)
Write-offs Covid Account | (151,060) |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | 176,877 | 13,038
Adjusting portion A [member] | Transport of energy purchased from itaipu [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 24,391 | 23,250
Operating revenues, constitution | 31,762 | 19,531
Operating revenues, amortization | (10,503) | (19,692)
Financial results, updating | 801 | 1,302
Write-offs Covid Account | (26,705) |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | 19,746 | 24,391
Adjusting portion A [member] | System service charges - ESS [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | (264,949) | (481,972)
Operating revenues, constitution | (72,032) | (188,280)
Operating revenues, amortization | 169,396 | 427,177
Financial results, updating | (8,854) | (21,874)
Write-offs Covid Account | 249,724 |
Rate flags | (54,154) |
Net sectorial financial assets and liabilities, ending | 19,131 | (264,949)
Adjusting portion A [member] | Energy development account - CDE [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 152,928 | 159,084
Operating revenues, constitution | 56,608 | 110,752
Operating revenues, amortization | (102,027) | (127,190)
Financial results, updating | 5,065 | 10,282
Write-offs Covid Account | (114,446) |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | (1,872) | 152,928
Adjusting portion A [member] | Proinfa [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 8,468 | 2,989
Operating revenues, constitution | (21,615) | 17,396
Operating revenues, amortization | (8,856) | (12,636)
Financial results, updating | (181) | 719
Write-offs Covid Account | 22,039 |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | (145) | 8,468
Other financial components [member] | Neutrality [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 48,506 | 123,028
Operating revenues, constitution | 95,870 | (1,122)
Operating revenues, amortization | (52,843) | (74,698)
Financial results, updating | 187 | 1,298
Write-offs Covid Account | (14,455) |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | 77,265 | 48,506
Other financial components [member] | Offset of energy surplus/deficit under CCEAR bilateral contracts [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | 40,192 | 5,237
Operating revenues, constitution | 75,917 | 80,385
Operating revenues, amortization | (79,714) | (45,430)
Financial results, updating |  |
Write-offs Covid Account |  |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | 36,395 | 40,192
Other financial components [member] | CVA angra III adjustment [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning |  | 6,272
Operating revenues, constitution |  |
Operating revenues, amortization |  | (6,272)
Financial results, updating |  |
Rate flags |  |
Net sectorial financial assets and liabilities, ending |  |
Other financial components [member] | Hydrological risk [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | (347,160) | (319,033)
Operating revenues, constitution | (444,291) | (324,504)
Operating revenues, amortization | 322,432 | 304,197
Financial results, updating | (5,092) | (7,820)
Write-offs Covid Account |  |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | (474,111) | (347,160)
Other financial components [member] | Tariff refunds [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | (194,253) | (180,963)
Operating revenues, constitution | (83,514) | (89,327)
Operating revenues, amortization | 88,269 | 83,900
Financial results, updating | (4,171) | (7,863)
Write-offs Covid Account |  |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | (193,669) | (194,253)
Other financial components [member] | Overcontracting [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | (168,123) | (238,416)
Operating revenues, constitution | 274,051 | (22,166)
Operating revenues, amortization | 145,853 | 173,087
Financial results, updating | 663 | (5,774)
Write-offs Covid Account | (101,788) |
Rate flags | (19,979) | (74,854)
Net sectorial financial assets and liabilities, ending | 130,677 | (168,123)
Other financial components [member] | Others [member] |  |
Disclosure of financial assets [line items] |  |
Net sectorial financial assets and liabilities, beginning | (448) | 192
Operating revenues, constitution | 6,927 | (905)
Operating revenues, amortization | (2,375) | 294
Financial results, updating | 700 | (29)
Write-offs Covid Account |  |
Rate flags |  |
Net sectorial financial assets and liabilities, ending | R$ 4,804 | R$ (448)

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