Transmisora Eléctrica del Sur
Since 2010, Transmisora Eléctrica del Sur has held the concession to provide the design, financing, supply, construction, operation, and maintenance of the 220 kV Tintaya-Socabaya transmission line, the 138 kV Tintaya Nueva-Tintaya Existente transmission line, and the associated substations. All of these combine for a total circuit length of 407 km.
- Tintaya - Socabaya Line: the line starts at the Tintaya 220kV substation, located in the Cusco region near the town of Marquiri and the Mina Tintaya, and ends at the Socabaya substation, which is located in the Arequipa region in the Socabaya District.
- Tintaya Nueva - Tintaya Existente Line: the line starts at the Tintaya 220kV substation, located in the Cusco region near the town of Marquiri to later head northeast towards the Tintaya Existente 138 kV substation, passing through the area of the Mina Tintaya concession. It runs parallel to the 138 kV Tintaya - Cusco line.
- Socabaya Existente 220 kV substation (expansion)
the busbar configuration for this substation is defined by the existing installations, which correspond to a double busbar arrangement with transfer disconnector; all of the existing line and transformer bays of Transmantaro, REDESUR and Cerro Verde have this configuration.
- Tintaya Existente 138 kV substation (expansion)
the busbar configuration for this substation is defined by the existing installations of R.E.P. and Xstrata-Tintaya; the design and spaces in the Tintaya 138 kV substation is a double busbar configuration.
- Tintaya Nueva 220 kV substation
This substation interconnects hydraulic power stations, large towns, and large loads in the mining sector, so the requirements in terms of reliability, flexibility, and security are high. In addition, due to its geographic location, it is important within the interconnected electrical system of Peru.
- Tintaya Nueva 138 kV substation
The transformer/line bay interconnects with the Tintaya Existente 138 kV substation with a short line 3.2 kilometres long.