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23. REGULATORY CHARGES
 12 Months Ended
Dec. 31, 2020
Net movement in regulatory deferral account balances related to profit or loss [abstract]  
REGULATORY CHARGES
23. REGULATORY CHARGES
   

2020 

   2019
Liabilities        
Global Reversion Reserve (RGR)     28       31  
Energy Development Account (CDE)     64       58  
Grantor inspection fee – ANEEL     3       3  
Energy Efficiency Program     265       255  
Research and development (R&D)     225       199  
Energy System Expansion Research     4       3  
National Scientific and Technological Development Fund     8       6  
Proinfa – Alternative Energy Program     7       8  
Royalties for use of water resources     13       10  
Emergency capacity charge     26       26  
Customer charges – Tariff flags     90       —    
Others     4       5  
      737       604  
                 
Current liabilities     446       457  
Non-current liabilities     291       147