The Company has been present in South America since 1999, where it manages several transmission grids through different subsidiaries integrated into Red Eléctrica Internacional (REI); a task it accomplishes maintaining excellent rates of availability of the facilities.
In Peru, REI owns 100% of the following companies: Red Eléctrica Andina (REA), a company specialised in electrical maintenance of medium and high voltage infrastructure, protection systems and telecommunications systems, as well as technical consulting for energy projects; and Red Eléctrica del Sur (REDESUR), a company which manages the transmission of electricity in the Arequipa, Moquegua, Tacna and Puno administrative regions of southern Peru.
REDESUR is in turn the owner of the following companies: Transmisora Eléctrica del Sur (220 kV Tintaya – Socabaya line and the 138 kV Tintaya Nueva – Tintaya Existing line and associated substations), Transmisora Eléctrica del Sur 2 (220 kV Azángaro – Juliaca – Puno line) and Transmisora Eléctrica del Sur 3 (220 kV Montalvo – Los Héroes line). In addition, it has been awarded the concession contract for the Tintaya – Azángaro 220 kV line project that will be carry out by Transmisora Eléctrica del Sur 4. This project establishes a connection between the Transmisora Eléctrica del Sur and Transmisora Eléctrica del Sur 2 projects, closing the ring with this new section of line.
In Chile, REI manages Red Eléctrica Chile, a company wholly owned by REI. This subsidiary has acquired 50% of the share capital of Transmisora Eléctrica del Norte (TEN), ), 70% of REDENOR and 100% of Centinela Transmisión.
Red Eléctrica Chile acquired 50% of the share capital of Transmisora Eléctrica del Norte (TEN), owned by the Chilean company EC-L (belonging to the Engie Group). This transaction allowed Red Eléctrica to enter into the electricity transmission business in Chile.
The Chilean company TEN is responsible for the construction of the first interconnection line between the north and central electricity subsystems of Chile. Once the 500 kV Mejillones-Cardones transmission line is completed, it will have a length of 600 km.
In 2017 Red Eléctrica Chile, through REDENOR (a company created in a 70%-30% consortium with Cobra Instalaciones y Servicios), was awarded the concession contract for the execution and subsequent management and operation of more than 258 kilometres of line in Chile. The project includes the design, financing, construction, operation and maintenance of the first 220 kilovolt (kV) circuit of the Nueva Pozo Almonte-Pozo Almonte line; the Nueva Pozo Almonte-Cóndores line, and the Nueva Pozo Almonte-Paranicota line, as well as the 220 kV Nueva Pozo Almonte substation - all part of the SING (Interconnected System of Norte Grande).
In July 2018, Red Eléctrica Chile acquired 100% of the share capital of Centinela Transmisión, owned by Minera Centinela, for a total of 117.2 million dollars; the transaction included not only operating assets but also those projects currently under construction. Centinela Transmisión manages and operates three 220 kilovolt lines (totalling 265 km of line circuit) in the Antofagasta region of northern Chile that connect the substations of Encuentro - El Tesoro, El Tesoro - Esperanza and El Cobre - Esperanza. The acquisition also includes the construction works for the enlargement of these facilities as set out in Chile's Transmission System Expansion Plan, for the period 2016-2017, and which are curently being managed and carried out by Centinela Transmisión.