Abstract
The techno-economic performance of two different CSP technologies i.e. Solar tower (ST) and parabolic trough (PT) were evaluated in this paper, each at two different locations in Ghana (Navrongo and Tamale) using the System Advisor Model (SAM) software. From the simulated results, levelized cost of energy (LCOE) of 13.67 ¢/kWh and 14.73 ¢/kWh were recorded for the ST modelled at Navrongo and Tamale, respectively. The PT power plant simulated at Tamale and Navrongo also recorded an LCOE of 28.83 ¢/kWh and 25.83 ¢/kWh, respectively. It was observed that, the optimum solar multiple (SM) for the ST ranges between 1.4 and 1.9, this is because the least LCOEs for the different thermal energy storage (TES) periods are within that range. In the case of the PT power plants, the SM also depends on the period of the TES and each TES has a distinct SM ranging between 2.4 and 4. Results from the analysis suggests that the ST technology is the optimal system for the Ghanaian weather conditions. The study concludes that the bankability of CSP technology in Ghana depends on the type of financial conditions for the project. Therefore, appropriate policies from government are necessary to help in their development.
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