Dual Water–Energy Potential of Floating Photovoltaics in Morocco: Multi-Criteria Reservoir Selection, System-Performance Modelling, and Evaporation-Saving Assessment
Salma SEDKI, Mohamed Reda EL AOUNI, Houssame LIMAMI
Abstract. This study develops a multi-criteria decision analysis (MCDA) to identify the optimal Moroccan reservoir for Floating Photovoltaic (FPV) applications and assess related savings on energy and water resources. Ten reservoirs were analyzed using Quantum Geographic Information System (QGIS) software with criteria related to hydrological stability, energy production using Morris Sensitivity analysis, and cost/accessibility using Analytic Hierarchy Process (AHP). The highest-ranking site, Oued El Makhazine, was modeled in System Advisor Model (SAM) under a conservative 5% coverage scenario. Results show an annual electricity production level of 396.62 GWh with a capacity factor of 17.3% and levelized Cost of Energy (LCOE) value of 0.0573 $/kWh, which can cover the power demand of 396,620 people on an annual basis. Evaporation loss was estimated using the simplified Penman method in MATLAB with expected annual savings of 1.856 million m³, meeting the domestic water needs of 41,336 residents. These findings demonstrate the strong co-benefits of FPV for clean energy generation and freshwater conservation in water-stressed regions.
Keywords
FPV, Water Scarcity, MCDA, Water Savings, Evaporation, GIS, LCOE
Published online 4/25/2026, 13 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Salma SEDKI, Mohamed Reda EL AOUNI, Houssame LIMAMI, Dual Water–Energy Potential of Floating Photovoltaics in Morocco: Multi-Criteria Reservoir Selection, System-Performance Modelling, and Evaporation-Saving Assessment, Materials Research Proceedings, Vol. 64, pp 135-147, 2026
DOI: https://doi.org/10.21741/9781644904091-17
The article was published as article 17 of the book Energy Futures
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] World Bank, “High and Dry: Climate Change, Water, and the Economy,” World Bank, Washington, DC, USA, 2016. [Online]. Available : https://documents1.worldbank.org/curated/en/862571468196731247/pdf/105130-REVISED-K8517.pdf.
[2] AFP, “Morocco tests floating solar panels to save water,” Arab News, Aug. 31, 2025. https://www.arabnews.com/node/2613661/middle-east (accessed Nov. 28, 2025).
[3] R. Benbba et al., “Solar Energy Resource and Power Generation in Morocco: Current Situation, Potential, and Future Perspective,” Resources, vol. 13, no. 10, p. 140, Oct. 2024. https://doi.org/10.3390/resources13100140.
[4] Y. Jin et al., “Energy production and water savings from floating solar photovoltaics on global reservoirs,” Nature Sustainability, vol. 6, no. 7, pp. 865–874, Mar. 2023. https://doi.org/10.1038/s41893-023-01089-6.
[5] A. Mentzafou, E. Dimitriou, I. Karaouzas, and S. Zogaris, “Impact Assessment of Floating Photovoltaic Systems on the Water Quality of Kremasta Lake, Greece,” Hydrology, vol. 12, no. 4, p. 92, Apr. 2025. https://doi.org/10.3390/hydrology12040092
[6] G. Sandrini, A. Wagenvoort, R. van Asperen, B. Hofs, D. Mathijssen, and A. van der Wal, “Illuminating the Impact of a Floating Photovoltaic System on a Shallow Drinking Water Reservoir: The Emergence of Benthic Cyanobacteria,” Water, vol. 17, no. 8, p. 1178, Apr. 2025. https://doi.org/10.3390/w17081178
[7] “Fraunhofer quantifies German floating PV potential,” Bayern-innovativ.de, 2024. https://www.bayern-innovativ.de/en/emagazine/detail/fraunhofer-quantifies-german-floating-pv-potential (accessed Nov. 28, 2025)
[8] C. Owen, “Spain releases new regulations for floating PV on reservoirs,” Solar&StorageXtra – Light reading, Jul. 15, 2024. Available: https://solarstoragextra.com/spain-releases-new-regulations-for-floating-pv-on-reservoirs/
[9] “Floating solar PV on dam reservoirs: The opportunities and the challenges.” Available: https://www.hydropower-dams.com/wp-content/uploads/FPV_report.pdf.
[10] A. Mouhaya, A. El Hammoumi, A. El Ghzizal, and S. Motahhir, “Assessment of floating solar photovoltaic potential and water conservation in Morocco: Case studies of four hydroelectric dams,” Cleaner Engineering and Technology, vol. 26, p. 100952, Mar. 2025. https://doi.org/10.1016/j.clet.2025.100952.
[11] Ministère de l’Equipement et de l’Eau, “Accueil,” https://www.equipement.gov.ma/AR/Pages/Accueil.aspx
[12] H. Tavassoli, “The Effect of Temperature on Photovoltaic Cell Efficiency,” Academia.edu, Dec. 07, 2022. https://www.academia.edu/92375607/The_Effect_of_Temperature_on_Photovoltaic_Cell_Efficiency
[13] M. A. Alantali, H. Rafiq, S. A. Alzarouni, O. A. Qureshi, and E. Rodriguez-Ubinas, “Wind Speed Effect on the Performance of Free-Standing PV Modules in Hot Desert Climate,” pp. 1–5, Nov. 2023. https://doi.org/10.1109/mena-sc54044.2023.10374470
[14] M. Balesdent, L. Brevaul, S. Lacaze, S. Missoum, and J. Morio, “Methods for high-dimensional and computationally intensive models,” Elsevier eBooks, pp. 109–136, Nov. 2015. https://doi.org/10.1016/b978-0-08-100091-5.00008-3. Available: https://www.sciencedirect.com/topics/engineering/morris-method
[15] O. Bozorg-Haddad, H. Loáiciga, and B. Zolghadr-Asli, “Analytic Hierarchy Process (AHP),” in A Handbook on Multi-Attribute Decision-Making Methods, Chapter 3, John Wiley & Sons, Inc., Mar. 2021. https://doi.org/10.1002/9781119563501.ch3
[16] J. A. Prieto-Amparán, A. Pinedo-Alvarez, C. R. Morales-Nieto, M. C. Valles-Aragón, A. Álvarez-Holguín, and F. Villarreal-Guerrero, “A Regional GIS-Assisted Multi-Criteria Evaluation of Site-Suitability for the Development of Solar Farms,” Land, vol. 10, no. 2, p. 217, Feb. 2021. https://doi.org/10.3390/land10020217
[17] A. E. Dinçer, A. Demir, and K. Yılmaz, “Enhanced Objectivity of AHP for More Reliable Solar Farm Site Selection,” Energy Science & Engineering, Apr. 2025. https://doi.org/10.1002/ese3.70027.
[18] M. S. Admin, “Top Tier 1 Solar Panel Manufacturers List: Updated 2024 Rankings,” RENVU, Mar. 20, 2025. https://www.renvu.com/blogs/learn/top-tier-1-solar-panel-manufacturers-list-updated-2024-rankings?srsltid=AfmBOop-210b1NmTvh-0ardbAYO61OeeLxtll6Qhdx-M3ISYG4DyPODj (accessed Nov. 28, 2025)
[19] E. Rosenlieb, M. Rivers, and A. Levine, “Floating photovoltaic technical potential: A novel geospatial approach on federally controlled reservoirs in the United States,” Solar Energy, vol. 287, pp. 113177–113177, Dec. 2024. https://doi.org/10.1016/j.solener.2024.113177
[20] “Floating Photovoltaic Power Plants: A Review of Energy Yield, Reliability, and Maintenance 2025 PVPS.” Available: https://iea-pvps.org/wp-content/uploads/2025/04/IEA-PVPS-T13-31-2025-REPORT-Floating-PV-Plants.pdf
[21] H. Ziar, “Floating solar stations.” Accessed: Nov. 29, 2025. [Online]. Available: https://pure.tudelft.nl/ws/files/103032634/10ideas_ENG_FLOATING_SOLAR_STATIONS.pdf?utm
[22] Nrel.gov, 2025. https://docs.nrel.gov/docs/fy22osti/80695.pdf?utm_ (accessed Nov. 29, 2025)
[23] E. T. Linacre, “A simple formula for estimating evaporation rates in various climates, using temperature data alone,” Agricultural Meteorology, vol. 18, no. 6, pp. 409–424, Dec. 1977. https://doi.org/10.1016/0002-1571(77)90007-3
[24] T. K. Thiis, I. Burud, A. Flø, D. Kraniotis, S. Charisi, and P. Stefansson, “Monitoring and Simulation of Diurnal Surface Conditions of a Wooden Façade,” Procedia Environmental Sciences, vol. 38, pp. 331–339, 2017. https://doi.org/10.1016/j.proenv.2017.03.088
[25] H. F. Abd-Elhamid, A. Ahmed, M. Zeleňáková, Z. Vranayová, and I. Fathy, “Reservoir Management by Reducing Evaporation Using Floating Photovoltaic System: A Case Study of Lake Nasser, Egypt,” Water, vol. 13, no. 6, p. 769, Mar. 2021. https://doi.org/https://doi.org/10.3390/w13060769
[26] “Morocco – Countries & Regions,” IEA. Available: https://www.iea.org/countries/morocco/electricity
[27] Nrel.gov, 2025. Available: https://docs.nrel.gov/docs/fy22osti/80695.pdf?utm_source=chatgpt.com (accessed Nov. 29, 2025)
[28] World Bank, Gestion de la rareté de l’eau en milieu urbain au Maroc – Annexes aux Sections 2 à 4, 2017, 73 p. [Online]. Available: https://documents1.worldbank.org/curated/en/299131516806648462/pdf/122698-FRENCH-v2Annexes-Sections-2-4-FR.pdf

