The construction of the first generation of commercial hybrid solar gas-turbine power plants will present the designer with a large number of choices. To assist decision making, a thermoeconomic study has been performed for three different power plant configurations, namely simple- and combined-cycles as well as simple-cycle with the addition of thermal energy storage. Multi-objective optimization has been used to identify Pareto-optimal designs and highlight the trade-offs between minimizing investment costs and minimizing specific CO2 emissions. The solar hybrid combined-cycle plant provides a 60% reduction in electricity cost compared to parabolic trough power plants at annual solar shares up to 20%. The storage integrated designs can achieve much higher solar shares and provide a 7–13% reduction in electricity costs at annual solar shares up to 90%. At the same time, the water consumption of the solar gas-turbine systems is significantly lower than conventional steam-cycle based solar power plants.
- International Gas Turbine Institute
A Comparative Thermoeconomic Study of Hybrid Solar Gas-Turbine Power Plants
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Spelling, J, Laumert, B, & Fransson, T. "A Comparative Thermoeconomic Study of Hybrid Solar Gas-Turbine Power Plants." Proceedings of the ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers. San Antonio, Texas, USA. June 3–7, 2013. V004T05A001. ASME. https://doi.org/10.1115/GT2013-94046
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