A Study on Solar Multiple for an Integrated Solar Combined Cycle System with Direct Steam Generation

This paper presents a study on optimizing the solar multiple for integrated solar combined cycle (ISCC) systems with direct steam generation (DSG). ISCC systems with different solar multiple values are studied, for which the performance is characterized under design-point and annual conditions. Based on the annual plant performance, levelized cost of electricity (LEC) with different solar multiples are determined and compared. Therefore an optimum solar field size, i.e. solar multiple, which gives the minimum LEC, for the ISCC plant could be obtained.