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16. CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure Of Financial Assets And Liabilities Of The Concession [abstract]  
Schedule of financial assets and liabilities of concession

Concession financial assets    2019         2018  
Energy distribution concession (16.1)   460       396  
Gas distribution concession (16.1)   24       –    
Indemnifiable receivable – Transmission (16.2)    1,281       1,296  
Indemnifiable receivable – Generation (16.3)    816       816  
Concession grant fee – Generation concessions (16.4)    2,468       2,409  
    5,049       4,917  

  

Concession sector assets    2019         2018  
Amounts receivable from Parcel A (CVA) and Other Financial Components (16.5)    882       1,081  
Total    5,931       5,998  
Current assets    1,080       1,071  
Non-current assets    4,851       4,927  
Schedule of changes in concession financial assets related to infrastructure

The changes in concession financial assets related to infrastructure are as follows:

  

    Transmission            Generation             Distribution            Gas            Total   
Balances at December 31, 2016   2,287       2,800       216       –         5,303  
Additions   25       –         –         –         25  
Transfers of indemnity – plants not renewed   –         1,082       –         –         1,082  
Amounts received   (264 )     (232 )     –         –         (496 )
Transfers between PP&E, Financial assets and Intangible assets   2       –         146       –         148  
Monetary updating     224       317       –         –         541  
Adjustment of expectation of cash flow from the Concession financial assets   54       –         9       –         63  
Disposals   (2 )     –         –         –         (2 )
Adjustment of BRR of Transmission Assets   149       –         –         –         149  
Adjustment on indemnities of plants not renewed (Ministerial Order 291) – including financial updating   –         271       –         –         271  
Balances at December 31, 2017   2,475       4,238       371       –         7,084  
Effects of first-time adoption of  IFRS 15   (1,092 )     –         –         –         (1,092 )
Amounts received   (249 )     (1,389 )     –         –         (1,638 )
Transfers from PP&E   –         –         27       –         27  
Others transfers   –         (1 )     (1 )     –         (2 )
Monetary updating     162       377       –         –         539  
Disposals   –         –         (1 )     –         (1 )
Balances at December 31, 2018   1,296       3,225       396       –         4,917  
Amounts received   (181 )     (259 )     –         –         (440 )
Transfers from contract assets   44       –         48       –         92  
Transfers from (to) intangible assets   –         –         (1 )     24       23  
Monetary updating     122       318       18       –         458  
Disposals   –         –         (1 )     –         (1 )
Balances at December 31, 2019   1,281       3,284       460       24       5,049  
Schedule of generation indemnity receivable

These balances are recorded as financial assets at fair value through profit or loss, and totaled R$ 816 on December 31, 2019 and 2018. 

 

Generation plant  Concession expiration date  Installed capacity
(MW)		  Net balance of assets based on
historical cost		  Net balance of assets based on fair
value (replacement cost)
             
Lot D                  
UHE Três Marias  July 2015   396    71    413 
UHE Salto Grande  July 2015   102    11    39 
UHE Itutinga  July 2015   52    3    7 
UHE Camargos  July 2015   46    8    23 
PCH Piau  July 2015   18.01    2    9 
PCH Gafanhoto  July 2015   14    1    10 
PCH Peti  July 2015   9.4    1    8 
PCH Dona Rita  Sep. 2013   2.41    1    1 
PCH Tronqueiras  July 2015   8.5    2    12 
PCH Joasal  July 2015   8.4    1    8 
PCH Martins  July 2015   7.7    2    4 
PCH Cajuru  July 2015   7.2    4    4 
PCH Paciência  July 2015   4.08    1    4 
PCH Marmelos  July 2015   4    1    4 
Others                  
UHE Volta Grande  Feb. 2017   380    26    70 
UHE Miranda (1)  Dec. 2016   408    27    23 
UHE Jaguara (1)  Aug. 2013   424    40    174 
UHE São Simão (1)  Jan. 2015   1,710    2    3 
       3,601.70    204    816 

 

(1)      Investments made after the Jaguara, São Simão and Miranda plants came into operation, in the amounts of R$174, R$3 and R$23, respectively, are recorded as concession financial assets, and the determination of the final amounts to be paid to the Company is in a process of discussion with Aneel (the regulator). Company does not expect losses in realization of these amounts.
Schedule of auction won transferred to related specific purpose companies

The changes in these concession financial assets are as follows:

  

SPE  Plants     2018          Monetary
updating		           Amounts
received 		           2019   
Cemig Geração Três Marias S.A.  Três Marias    1,370       171       (139 )     1,402  
Cemig Geração Salto Grande S.A.  Salto Grande    430       54       (44 )     440  
Cemig Geração Itutinga S.A.  Itutinga    161       23       (19 )     165  
Cemig Geração Camargos S.A.  Camargos    120       17       (13 )     124  
Cemig Geração Sul S.A.  Coronel Domiciano, Joasal, Marmelos, Paciência and Piau    157       24       (20 )     161  
Cemig Geração Leste S.A.  Dona Rita, Ervália, Neblina, Peti, Sinceridade and Tronqueiras    107       18       (15 )     110  
Cemig Geração Oeste S.A.  Cajurú, Gafanhoto and Martins    64       11       (9 )     66  
Total      2,409       318       (259 )     2,468  

  

SPE  Plants      2017          Monetary
updating		          Amounts
received 		          2018    
Cemig Geração Três Marias S.A.  Três Marias    1,330       174       (134 )     1,370  
Cemig Geração Salto Grande S.A.  Salto Grande    417       55       (42 )     430  
Cemig Geração Itutinga S.A.  Itutinga    156       23       (18 )     161  
Cemig Geração Camargos S.A.  Camargos    116       17       (13 )     120  
Cemig Geração Sul S.A.  Coronel Domiciano, Joasal, Marmelos, Paciência and Piau    152       24       (19 )     157  
Cemig Geração Leste S.A.  Dona Rita, Ervália, Neblina, Peti, Sinceridade and Tronqueiras    103       18       (14 )     107  
Cemig Geração Oeste S.A.  Cajurú, Gafanhoto and Martins    63       11       (10 )     64  
Total      2,337       322       (250 )     2,409  

 

SPE Plants     2016          Monetary
updating 		           Amounts
received 		           2017    
Cemig Geração Três Marias S.A.  Três Marias    1,283       172       (125 )     1,330  
Cemig Geração Salto Grande S.A.  Salto Grande    403       54       (40 )     417  
Cemig Geração Itutinga S.A.  Itutinga    150       23       (17 )     156  
Cemig Geração Camargos S.A.  Camargos    112       17       (13 )     116  
Cemig Geração Sul S.A.  Coronel Domiciano, Joasal, Marmelos, Paciência, Piau    147       23       (18 )     152  
Cemig Geração Leste S.A. Dona Rita, Ervália, Neblina, Peti, Sinceridade, Tronqueiras    99       17       (13 )     103  
Cemig Geração Oeste S.A.  Cajurú, Gafanhoto, Martins    60       11       (8 )     63  
Total      2,254       317       (234 )     2,337  

  
Schedule of financial assets and financial liabilities with the tariff adjustments

The balance of these sector financial assets and liabilities, which are presented at net value, in assets or liabilities, in accordance with the tariff adjustments that have been authorized or are to be ratified, are as follows:

 

    2019       2018  
Financial position   Amounts ratified by Aneel in the last tariff adjustment       Amounts to be ratified by Aneel in the next tariff adjustments       Total       Amounts ratified by Aneel in the last tariff adjustment       Amounts to be ratified by Aneel in the next tariff adjustments       Total  
Assets    1,286       2,144       3,430       1,184       2,545       3,729  
Current assets    1,286       1,269       2,555       1,184       1,505       2,689  
Non-current assets    –            875            875            –               1,040           1,040    
Liabilities    (882 )     (1,666 )     (2,548 )     (1,140 )     (1,509 )     (2,649 )
Current liabilities    (882 )     (1,033 )     (1,915 )     (1,140 )     (902 )     (2,042 )
Non-current liabilities    –         (633 )     (633 )     –         (607 )     (607 )
Total current, net    404       236       640       44       603       647  
Total non-current, net    –         242       242       –         433       433  
Total, net    404       478       882       44       1,036       1,080  
                                                     

  

    2019       2018  
Financial components   Amounts ratified by Aneel in the last tariff adjustment          Amounts to be ratified by Aneel in the next tariff adjustments          Total          Amounts ratified by Aneel in the last tariff adjustment           Amounts to be ratified by Aneel in the next tariff adjustments           Total   
Items of ‘Parcel A’                                               
Energy Development Account (CDE) quota    119       29       148       1       220       221  
Tariff for use of transmission facilities of grid participants    (18 )     114       96       24       (6 )     18  
Tariff for transport of Itaipu supply    9       16       25       2       16       18  
Alternative power source program (Proinfa)    11       (6 )     5       3       5       8  
ESS/EER System Service/Energy Charges    (161 )     (136 )     (297 )     (246 )     (287 )     (533 )
Energy bought for resale    661       632       1,293       667       1,402       2,069  
Other financial components                                               
Over contracting of supply (1)   (84 )     216       132       (204 )     (13 )     (217 )
Neutrality of Parcel A    (30 )     (12 )     (42 )     53       (15 )     38  
Other financial items    (71 )     (206 )     (277 )     (236 )     (212 )     (448 )
Tariff Flag balances (2)    -       (103 )     (103 )     -       (11 )     (11 )
Excess demand and reactive power    (32 )     (66 )     (98 )     (21 )     (62 )     (83 )
TOTAL    404       478       882       43       1,037       1,080  
                                               

(1)      The wholly-owned subsidiary Cemig D was over contracted in 2017 and 2018 and the gain arising from the sale of the excess of energy in the spot market was provisionally passed through to customers by Aneel in the tariff adjustments of 2018 and 2019, including the portion in excess of the limit of 105% of the regulatory load – thus reducing the tariff that was determined. To establish whether this is a voluntary over contracting, the Company considers that the portion above the regulatory limit will be recovered in the subsequent tariff adjustment, when Aneel approves them. The Company has no expectation of loss in relation to realization of these amounts. The Company recognizes this right, in the amount of R$ 216,852, as ‘Other financial components’, to be approved by Aneel in the next forthcoming tariff adjustments.
(2)      Billing arising from the ‘Flag’ Tariff System (see below) not yet approved by the regulator (Aneel).
Schedule of changes in balances of financial assets and liabilities

Changes in balances of these sector assets and liabilities:

  

       
Balance at December 31, 2016    (407 )
Additions    811    
Amortization    177  
Payments from the Flag Tariff Centralizing Account    (586 )
Updating – Selic rate (Note 31)   (41 )
Balance at December 31, 2017    (46 )
Additions    1,638  
Amortization    335  
Others – R&D Reimbursement    (115 )
Payments from the Flag Tariff Centralizing Account    (794 )
Updating – Selic rate (Note 31)    62  
Balance at December 31, 2018    1,080  
Additions    724  
Amortization    (666 )
Payments from the Flag Tariff Centralizing Account    (361 )
Updating – Selic rate (Note 31)    105  
Balance at December 31, 2019    882