Press Release

Mainstream ensures the connectivity of five parks to the Chilean electricity system

Bnamericas Published: Friday, May 08, 2020

This release by Mainstream Renewable Power was translated automatically.

Aiming to supply 630 MW of clean energy to the National Electric System (SEN), Mainstream agreed to build five connection lines that will link its parks, grouped in the portfolio called “Huemul”, to the national energy matrix. This is equivalent to the annual consumption of 780 thousand homes and will prevent the emission of more than 744 thousand metric tons of CO 2 a year in Chile.

The “Huemul” portfolio is the second phase of Andes Renovables, one of the largest wind and solar generation platforms in Latin America, whose projects were winners in the 2016 public electricity supply tender, and which will contribute 1,300 MW to the SEN. The first phase corresponds to the 571 MW “Condor” portfolio, which in November of last year obtained its financial closure for 580 million dollars. The four projects in the portfolio are developed under strong security measures as a result of Covid-19.

“The agreements we reached allow us to continue advancing with the national effort to achieve a carbon neutral matrix by 2050. We know that these are difficult times, but our investment in Chile is long term. The country has enormous potential for the growth of renewable energy and we are proud to be contributing to building a more sustainable future for all, ”said Manuel Tagle, general manager of Mainstream Renewable Power for Chile and Latin America.

Regarding the wind projects in the “Huemul” portfolio, for the connection of the Ckani wind farm, Mainstream partnered with Inprolec to build a 22-kilometer electrical transmission line that will supply the project's 109 MW of power to the SEN. For its part, the Llanos del Vientos wind farm will be connected through a 23.5-kilometer route, which will be built by the consortium formed by Siemens and Isotron. Both wind projects are located in the Antofagasta Region. These are in addition to the already announced agreement between the company and Transelec for the injection of clean energy into the country produced by the Puelche Sur wind farm, located in the Los Lagos Region, through the new Frutillar Norte substation.

Finally, the Pampa Tigre solar park, located in the Antofagasta Region, will have a generation capacity of 100 MW, and will make use of the 13 km transmission line of the Cerro Tigre wind project of Mainstream, whose substation connecting to the SEN is built by the Siemens and Agrosonda consortium. Finally, the Valle Escondido solar park, located in the Atacama Region, will be interconnected to the SEN through a transmission line of more than 55 kilometers, whose construction, operation and maintenance is in charge of Transelec, and will be shared with the Rio solar park Hidden, which Mainstream builds in the area.


Information about the projects





 to SEN

Line Layout


109 MW




22 km

Plains of the Wind

160 MW



Siemens Energy - Isotron Chile

23.5 km

South Puelche

156 MW


The lakes


12.8 km

Pampa Tiger

100 MW



Siemens and Agrosonda

13 km

Hidden Valley

105 MW




55.5 km

About Mainstream

Mainstream is the largest developer of renewable energy projects present 11 years ago in Chile and one of the largest in Latin America, with more than 10.2 GW under development, 1,200 MW under construction and 1,100 MW in operation on four continents.

In Chile it has a geographically wide and diverse portfolio, with wind and solar projects, distributed from Tarapacá to Los Lagos, which will contribute more than 4,000 MW of clean energy to the national energy matrix.

Both in Chile and internationally, Mainstream stands out for the quality and reliability of its projects, thanks to the work it carries out to establish relationships of trust with the communities, through an early, transparent and constant dialogue, respecting the environment where locates, which contributes to the projects being sustainable and robust. Likewise, the company develops the feasibility analysis of each project with its own and specialized teams with a demanding methodology, which has proven to be very accurate.

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