Peruvian environmental authorities have approved the Mantaro-Marcona-Socabaya-Montalvo transmission line project proposed by Consorcio Transmantaro S.A. (CTM), a joint venture of Colombia-based transmission company Interconexión Eléctrica S.A. (ISA) (60 per cent) and Empresa de Energía de Bogotá (EEB) (40 per cent).

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