Saudi Arabia’s Acwa Power and South Africa’s Central Energy Fund have signed an agreement to co-invest in renewable energy projects starting with the 100MW Redstone concentrated solar power (CSP) plant in Northern Cape Province. The agreement was signed during a visit to Saudi Arabia by President Cyril Ramaphosa. The CSP plant, which will start construction this year, will use central salt receiver technology with 12 hours of thermal storage, allowing the plant to generate during the evening peak demand periods and producing 480,000 MWh/yr.