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20. SUPPLIERS (Details) - BRL (R$) R$ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | R$ 2,358 | R$ 2,080 | [1] | R$ 1,801
Energy on spot market - CCEE [member] |  |  |  |
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | 490 | 401 |  |
Charges for use of energy network [member] |  |  |  |
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | 192 | 145 |  |
Energy purchased for resale [member] |  |  |  |
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | 808 | 764 |  |
Itaipu Binacional [member] |  |  |  |
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | 325 | 243 |  |
GAS DISTRIBUTION [member] |  |  |  |
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | 127 | 143 |  |
Materials and services [member] |  |  |  |
Disclosure of trade payables [line items] |  |  |  |
Total suppliers | R$ 416 | R$ 384 |  |
[1] | See note 2.8.

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