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How does CSP work
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Background and status of CSP
In Concentrating Solar Power (CSP) plants, mirrors focus sunlight to generate heat and steam, producing electricity through a conventional thermodynamic cycle. Unlike solar photovoltaic (PV) systems, which utilize both direct and diffuse sunlight, CSP utilizes only the direct component known as Direct Normal Irradiance (DNI). CSP plants can integrate a heat storage system, allowing for electricity generation even during cloudy weather or after sunset. Thermal storage substantially enhances the capacity factor and dispatchability of CSP in comparison to PV and wind power. It is possible to classify CSP systems according to the mechanism by which the solar collectors concentrate solar irradiation: either “linear concentrating” or “point concentrating” varieties. Most existing systems use linear concentrating systems called parabolic trough collectors. Solar towers, sometimes also known as power towers, are the most widely deployed point concentrating CSP technology, but represented only ...
Costs of CSP
Investment Costs The investment cost for a PT plant depends on the thermal storage and the capacity factor. The cost for aan PT plant are: Thermal storage Capacity factor Costs in USD No 20-25% 4,600-7,100/kW 4-6,5 hours >40% 7,300-91,00/kW The costs of a 50 MW PT plant with a storage capacity of 7.5 hours has an estimated cost of USD 364 million or 7280/kW. The costs can be broken down in to multiple elements: The solar field (510,000 m2) is 38,5% of the costs Support structure (10,7%) Receivers (7,1%) Mirrors (6,4%) Heat transfer system (5,4%) Fluid (2,1%) Thermal storage system is 10,5% of the costs Salt (5%) Storage tanks (2%) Power block, balance of plant and grid connections account for 14% of the costs Labor for 500 persons for the plan construction is 17% of the costs EPC and financing costs are 19,5% of the costs
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