Techno-economic optimization of Concentrated Solar Power plants with thermocline thermal energy storage and integrated steam generator

Alberto Pizzolato, Vittorio Verda, Adriano Sciacovelli, Filippo Donato

Research output: Contribution to conferencePaper

Abstract

The utilization of molten salts as the Heat Transfer Fluid (HTF) in Concentrated Solar Power (CSP) allows to increase the maximum operational temperature of parabolic trough power plants, with a substantial gain in the power cycle efficiency. ENEA has recently tested a way to further ameliorate this concept by introducing a single- Tank configuration of the storage system with an integrated steam generator, which can dramatically reduce the total investment cost and simplify the power plant layout. In this paper we propose to couple this system to a waste-heat recovery unit for the cogeneration of power, heating and cooling, which has the potential to extend the range of applications of CSP plants to small-size systems and to regions with a moderate solar resource. In this paper, a techno-economic analysis is implemented to investigate the feasibility of this innovative technological pathway, to determine the optimal design of a representative 1 MWe plant located in Rome and to analyze its performances. Results reveal that the heat market brings a 28 % reduction of the Levelized Electricity Cost, allowing to reach the competitive value of 230.25 $/MWh. This is remarkably lower than the Feed-In-Tariff (FIT) of the Italian incentive scheme for CSP and comparable to the specific cost of larger plants despite an investment cost limited to 14.56 M$.
Original languageEnglish
Publication statusPublished - 2015
Event28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 - Pau, France
Duration: 1 Jan 2015 → …

Conference

Conference28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015
CountryFrance
CityPau
Period1/1/15 → …

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Environmental Science(all)
  • Energy(all)

Cite this

Pizzolato, A., Verda, V., Sciacovelli, A., & Donato, F. (2015). Techno-economic optimization of Concentrated Solar Power plants with thermocline thermal energy storage and integrated steam generator. Paper presented at 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015, Pau, France.