Modelling of Solar Thermal Electricity Plants in the POSYTYF Research Project for an Extensive Integration of Renewable Energy Sources




Solar Thermal Electricity Plant Simulation Model, Parabolic Trough, Thermal Energy Storage, Renewable Energy Sources, Dynamic Virtual Power Plant, Grid Integration


This article presents a simplified simulation model of a concentrated solar thermal power plant developed in the framework of the European research project POSYTYF (POwering SYstem flexibiliTY in the Future through RES). Increasing the share of Renewable Energy Sources (RES) in modern power grids is of critical importance for the transformation of the energy markets worldwide. However, the stability of the grid and the limited participation in ancillary services of RES limit their use, especially when high penetration is expected from them. A solution to overcome these issues is to increase the share of so-called dispatchable RES (hydropower, biomass, concentrating solar thermal power). The main objective of the POSYTYF project is to group several renewable and non-renewable energy sources into a Dynamic Virtual Power Plant (DVPP). The simplified simulation model of a parabolic-trough solar thermal power plant developed consists of sub-models for the solar field, thermal energy storage system and power block and it has been validated with real DNI profiles and production data of a commercial STE plant in Spain. The differences between the simulation and real data of daily net production for the days analysed are lower than 1%.


Parts of this paper were published as journal article “Using time-windowed solar radiation profiles to assess the daily uncertainty of solar thermal electricity production forecasts”, Journal of Cleaner Production, Volume 379, Part 2, 2022. Mario Biencinto, Lourdes González, Loreto Valenzuela (


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European Comission, “Energy roadmap 2050,” Luxembourg: Publications Office of the European Union, 2012.

E.L. Miguelez, I.E. Cortes, L. Rouco, G.L. Camino, “An overview of ancillary services in Spain “, in Electric Power Systems Research, Vol. 78 (2008) pp. 515–523. DOI:

I. Egido, F. Fernández-Bernal, L. Rouco, Member, “The Spanish AGC System: Description and Analysis “, in IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24 (2009) NO. 1, FEBRUARY. DOI:

B. Marinescu, O. Gomis-Bellmunt, F. Dörfler, H. Schulte, L. Sigrist. “Dynamic Virtual Power Plant: a new concept for grid integration of renewable energy sources”. arXiv:2108.00153 [cs, eess], July 2021. arXiv: 2108.00153. DOI:

Solar Millenium, The parabolic trough power plants Andasol 1 to 3., 2008 (accessed 10 November 2021).

International Electrotechnical Commission, “IEC 62863-3-2:2018, Solar Thermal electric plants – Part 3-2: systems and components – General requirements and test methods for large-size parabolic-trough collectors”, International Standard, 2018. (Accessed 12 June 2023).

L. Valenzuela, R. López-Martín, E. Zarza, “Optical and thermal performance of large-size parabolic-trough solar collectors from outdoor experiments: A test method and a case study”. In Energy 70 (2014) pp. 456–464. DOI:

V.M. Sharma, J.K. Nayak, S.B. Kedare, “Shading and available energy in a parabolic trough concentrator field”. Solar Energy 90 (2013) pp.144–153. DOI:

M. Geyer, E. Lüpfert, R. Osuna, A. Esteban, W. Schiel, A. Schweitzer, E. Zarza, P. Nava, J. Langenkamp, E. Mandelberg, “EUROTROUGH – Parabolic Trough Collector Developed for Cost Efficient Solar Power Generation”, in: Proceedings of the 11th SolarPACES International Conference, 4–6 September 2002, Zurich, Switzerland, 2002.

Siemens Energy, Industrial Steam Turbines., 2021 (accessed 8 November 2021).

M. Stewart, “Centrifugal Pumps”, in: Surface Production Operations: Volume IV - Pump and Compressor Systems: Mechanical Design and Specification, Gulf Professional Publishing, 2018, pp. 61-309, ISBN 978-0-12-809895-0.




How to Cite

González , L., Biencinto, M., Valenzuela, L., Arribas, L., & Polo, J. (2024). Modelling of Solar Thermal Electricity Plants in the POSYTYF Research Project for an Extensive Integration of Renewable Energy Sources. SolarPACES Conference Proceedings, 1.

Conference Proceedings Volume


Analysis and Simulation of CSP and Hybridized Systems

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