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    ACCIONA Industrial is the sole partner being used to construct this solar thermal energy plant with a 100 MW tower in the province of Northern Cape, South Africa.

    The Redstone solar thermal energy project is the first of its kind in South Africa and is comprised of a CSP power plant that features molten salt energy storage technology in a tower configuration. The plant will have a capacity of 100 MW with 12 hours of energy storage at full load. It will have the ability to supply clean energy to over 200,000 homes in the region. Fuelled entirely by the sun, the plant requires no backup fuel and will also use dry cooling for the energy generation cycle as a key component in minimising the use of water.


    • Thermal storage using molten salts for 12 hours.
    • Produces 480 GWh of clean energy per year.
    • Can provide electricity to 200,000 homes in the area.
    • Does not need natural gas or petroleum backup; fully emissions-free.
    • Supports South Africa's renewable energy program by using the most advanced solar technology, delivering clean energy day and night.
    • Significantly reduces use of water in cooling by using an efficient, low water consumption dry cooling system.


    Northern Cape, South Africa
    ACWA Power
    100 MWe
    Contract type
    EPC - Engineering, Procurement, Construction, and Commissioning
    CSP tower project with molten salt thermal storage
    Year construction started
    Planned for 2017

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