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August 30, 2021

Kaxu Solar One – Thermal Energy Storage System, South Africa

By Carmen

The Kaxu Solar One – Thermal Energy Storage System is a 100,000kW energy storage project located in Pofadder, Northern Cape, South Africa.

The thermal energy storage project uses molten salt as its storage technology. The project was commissioned in 2015.


The Kaxu Solar One – Thermal Energy Storage System was developed by Abengoa Solar South Africa. The project is owned by Industrial Development Corporation (Zambia) (49%) and Abengoa Solar South Africa (51%).

The key applications of the project are onsite renewable generation shifting, renewables capacity firming and renewables energy time shift.

Contractors involved

Abengoa Solar South Africa and Industrial Development Corporation (Zambia) have delivered the project.

Additional information

KaXu Solar One is a 100MW parabolic trough plant near Pofadder in Northern Cape. The KaXu Solar One Power Project will supply clean energy to approximately 90,000 African homes while offsetting 315,000t of CO2 emissions per year. The Energy Storage System is funded by Department of Energy (South Africa) – Renewable Energy Independent Power Producer Procurement Programme.


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.

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