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3. PRINCIPLES OF CONSOLIDATION (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure of subsidiaries [abstract]  
Schedule of companies direct equity investments

The following subsidiaries are included in the consolidated financial statements:

  

Subsidiary Form of
valuation		   2019       Form of
valuation		    2018  
   Direct
interest, %		       Indirect
interest, %		     Direct
interest, %		        Indirect
interest, %		  
Cemig Geração e Transmissão Consolidation   100.00       –       Consolidation   100.00       –  
Cemig Distribuição Consolidation   100.00       –       Consolidation   100.00       –  
Gasmig Consolidation   99.57       –       Consolidation   99.57       –  
Cemig Geração Distribuída (Usina Térmica Ipatinga) Consolidation   100.00       –       Consolidation   100.00       –  
Efficientia Consolidation   100.00       –       Consolidation   100.00       –  
Luce Empreendimentos e Participações S.A. (1) Consolidation   –       –       Consolidation   100.00       –  
Rio Minas Energia e Participações (1) Consolidation   –       –       Consolidation   100.00       –  
Light  (2) Assets classified as held for sale   22.58       –       Consolidation   26.06       23.93  
LightGer(3) Equity method   –       49.00       Consolidation   –       74.49  
Guanhães (3) Equity method   –       49.00       Consolidation   –       74.49  
Axxion (4) Equity method   49.00       –       Consolidation   49.00       25.49  
UHE Itaocara (3) Equity method   –       49.00       Consolidation   –       74.49  

     

(1) Merged with Cemig on April 24, 2019.
(2) With the settlement of the restricted offering, on July 17th, 2019, the Company’s equity interest in the total share capital of Light was reduced from 49.99%, on December 31th, 2018, to 22.58% on December 31th, 2019. This transaction resulted in the company ceasing to have control over this investee, and the Company recognized the remaining investment in Light in the consolidated financial position, as an Investment in affiliate or jointly-controlled entity, in accordance with IAS 28. Since the Company continues to have a firm commitment to dispose of the remaining interest in Light, the investment in that investee continues to be classified as assets held for sale, in accordance with IFRS 5 – Non-current assets held for sale, and discontinued operations. For more information, see Notes 1, 18 and 34.
(3) On December 31, 2018, the Company holds indirect equity interests in LightGer, Guanhães and Itaocara, of 74.49% and 49%, held through Cemig GT, and 25.49%, held through Light. As from the cessation of control of Light, the Company no longer holds control of these investees and the remaining indirect interest through Cemig GT is, from that date, measured by the equity method in the consolidated financial statements, in accordance with IAS 28. For more information, see Notes 18 and 34.
(4) On December 31, 2018 the Company holds direct and indirect interests (through Light) in Axxiom of 49% and 25.49%, respectively. As from the cessation of control of Light, the Company no longer holds control of these investees and the remaining direct interest is, from that date, measured by the equity method in the consolidated financial statements, in accordance with IAS 28. For more information, see Notes 18 and 34