Design and optimisation of linear Fresnel power plants based on the direct molten salt concept

These analyses exhibit for the given plant setup an optimum choosing a sub-critical reheat power cycle at 540 °C/165 bar and the so-called “Hitec” molten salt mixture as heat transfer fluid (HTF). However supercritical power cycles in a DMS STE plants are not considered and may bring further LCoE reductions. Additionally, in terms of LCoE, the study reveals an optimal plant capacity in the range of 100 MWel to 150 MWel. Finally, the study shows that a further increase in the temperature of both power cycle and solar field beyond the previously named optimal values leads to increased LCoE.