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Suppliers (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Summary of Suppliers
     2017      2016  

Energy on spot market – CCEE (1)

      468        168  

Charges for use of energy network (2)

      153        78  

Energy purchased for resale (3)

      871        677  

Itaipu Binacional

      240        207  

Gas bought for resale

      187        462  

Materials and services

      424        348  
  

 

 

     

 

 

  
     2,343        1,940  
  

 

 

     

 

 

  

 

(1) The balance payable to the CCEE refers basically to the hydrological risk of quotas for Itaipu. The increase in the balance payable, due to the hydrological risk, and also of the CCEARs, is associated with the adverse hydrological context.
(2) The charges payable by distribution and generation agents for use of the facilities that are components of the national grid. The amounts to be paid are set by an Aneel Resolution.
(3) In 2017 the Company reported higher expenses of energy due to the higher cost of supply in the wholesale market, arising from the low level of reservoirs, which resulted in lower output of power by the hydroelectric plants.