The Minera El Tesoro CSP Installation-HTSS is a 10,500kW energy storage project located in Sierra Gorda, Atacama, Chile.

The thermal energy storage project uses heat as its storage technology. The project was commissioned in 2012.


The Minera El Tesoro CSP Installation-HTSS was developed by Abengoa Solar. The project is owned by Minera El Tesoro (100%), a subsidiary of Antofagasta Minerals .

The key applications of the project are renewables capacity firming and renewables energy time shift.

Contractors involved

Abengoa Solar and Minera El Tesoro have delivered the project.

Additional information

“The first concentrating solar power (CSP) project ever in South America is installed in the Atacama Desert in Chile.
The 10.5 MW thermal parabolic trough plant is integrated into the Electrowinning (EW) process at a copper mine operated by Minera El Tesoro, a subsidiary of Antofagasta Minerals.
The plant incorporates thermal energy storage that allows the delivery of thermal energy for up to 6.5 hours at rated power after the sun goes down.

About Abengoa Solar

Abengoa Solar SA (Abengoa Solar), a subsidiary of Abengoa SA is an alternative energy company that offers solar power generation solutions. The company develops, builds and operates commercial concentrating solar power and photovoltaic power plants. It offers management services in the development, design, engineering, procurement and construction of parabolic trough, tower solar thermal plants and PV plants; design, manufacture and marketing of components for solar plants developed both within abengoa solar and in collaboration with partners; and others. Abengoa Solar also provides engineering, procurement and construction (EPC) turnkey services of its solar thermal and photovoltaic plants. The company operates in the US, Mexico, Chile, Brazil, Germany, Italy, Spain, Algeria, the UAE, Saudi Arabia, China, India and Australia. Abengoa Solar is headquartered in Seville, Spain.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.