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Abstract. The dispatchibility potential of CSP in South Africa was investigated in the previous study. This was done by proposing a virtual hybrid system including the planned Open Cycle Gas Turbines and an optimized fleet of CSP plants. The study revealed a number of benefits; mitigates costs of capital, incrementally reduces fuel dependency, adds reserve margin and leads to a lower LCOE of the system. The subsequent paper to that, investigated the effects of the two-tier tariff structure, introduced in the Independent Power Producer Programme of the Department of Energy, which has on the proposed 3 300 MW capacity of CSP plants that is proposed as a peaking CSP system. The former study showed that the proposed CSP system generates 29 % less revenue under the two-tier tariff. However, when the CSP system is optimized for the two-tier tariff, it becomes profitable -with a smaller storage capacity of 5 hours. This report investigates and presents the results and beneficial strategies from the previous reports. In addition, this report investigates the strategies of increasing the CSP energy share to the peak energy. The results show that the two-tier tariff results in a smaller storage optimized system -due to profitability. The implications would not reflect an increase in the share of CSP energy during peak time. In addition, it reduces the share of CSP energy during the winter season.

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