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10 Accounts Receivables - Concessions (Details Narrative) - Concession Agreement [member] - HPP GPS [member] - Bonus from the grant of concession agreements under the quota system [member]
R$ in Thousands
Jan. 05, 2016
BRL (R$)
Accounts Receivable Concessions [Line Items]  
Concession agreement term P30Y
Bonus paid R$ 574,827
Description of proportion of electric energy sold 70% of the power in the ACR and 30% in the free environment - ACL.