Redstone concentrated solar thermal power (CSP) project is a solar power plant with molten salt energy storage, located in Postmasburg, near Kimberley, in the Northern Cape Region of South Africa.  Redstone has the capacity of 100 megawatts to deliver power to 200,000 people and it is capable of storing thermal energy for a period of 12 hours, which enables the plant to generate electricity through the night in addition to day time operations.

ACWA Power, the top tier global power developer, has been awarded the contract by The South Africa Department of Energy (DOE) to develop the project along with the consortium of Solar Reserve. SEPCOIII, China is in charge of the engineering, procurement, and construction of the plant.

FERBECK INTERNATIONAL SA has been awarded a civil construction contract for one 250 meters-height solar tower by SEPCOIII, China.