Assessment of the Net Value of CSP Systems Integrated with Thermal Energy Storage

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Abstract

Within this study, we evaluate the operational and capacity value - or total system value - for multiple concentrating solar power (CSP)plant configurations under an assumed 33% renewable penetration scenario in California. We calculate the first-year bid price for two CSP plants, including a 2013 molten-salt tower integrated with a conventional Rankine cycle and a hypothetical 2020 molten-salt tower system integrated with an advanced supercritical carbon-dioxide power block. The overall benefit to the regional grid, defined in this study as the net value, is calculated by subtracting the first-year bid price from the total system value. Re - sults of this study indicate a positive net value for a variety of scenarios, depending on technology assumptions and assumed values for natural gas price and tax incentives. We provide results for the 2013 and 2020 CSP configurations as a function of thermal energy storage capacity and solar field size. We provide a sensitivity of these results to natural gas price, which influence the operation value and thus the total system value. We also investigate the sensitivity of the net value to current and anticipated tax incentives.

Original languageAmerican English
Pages (from-to)2060-2071
Number of pages12
JournalEnergy Procedia
Volume69
DOIs
StatePublished - 2015
EventInternational Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014 - Beijing, China
Duration: 16 Sep 201419 Sep 2014

Bibliographical note

Publisher Copyright:
© 2015 The Authors. Published by Elsevier Ltd.

NREL Publication Number

  • NREL/JA-5500-62913

Keywords

  • concentrating solar power
  • grid integration
  • power tower
  • thermal energy storage

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