1376 • by integrating composite floating platforms, a high-frequency single-wire energy transfer system, buffer energy storage, and an advanced energy management system, the proposed architecture extends beyond conventional FPV solutions, • a flexible, fully relocatable, adaptive approach suitable for early-stage reclamation environments can be introduced. The main conclusions of the current stage of study are as follows: • FPV installations can be deployed during early phases of post-mining flooding if designed for variable hydrological and spatial conditions. • Composite materials provide a technically viable and environmentally favorable alternative to steel and HDPE in FPV structures, particularly in aggressive aquatic environments. • High-frequency SWET, supported by energy storage and appropriate control strategies, represents a promising option for short-distance power transmission from FPV systems. • The integration of FPV, storage, and EMS is essential for stabilizing power flows and enabling experimental validation of non-standard transmission concepts. • FPV systems designed according to the POSTEN principles can support climate-neutrality and justtransition objectives while remaining compatible with long-term reclamation and land-use planning. Future work will focus on demonstrator-scale validation, long-term monitoring of mechanical and electrical performance, and assessment of environmental interactions. The results are expected to contribute to technical guidelines and regulatory pathways for FPV deployment on post-mining water bodies. ACKNOWLEDGEMENTS Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or European Research Executive Agency. Neither the European Union nor the granting authority can be held responsible for them. Funding: Scientific paper published as part of an international project POSTEN RFCS-2024-JT, cofunded by the European Union Research Fund for Coal and Steel (RFCS) in the years 2025-2029; grant agreement no: 101193769. Scientific paper published as part of an international project POSTEN RFCS-2024-JT, co-funded by the Ministry of Science and Higher Education's program "PMW" in the years 2025-2029; contract no. W33/FBWiS/2025. REFERENCES Berlioux B., Amiot B., Ferrand M., Le Berre R., Rhazi O-L., Vidal J., Pabiou H., Knikker R., (2025). Numerical analysis of evaporation reduction in floating photovoltaic power plants: influence of design parameters. EPJ Photovoltaics 16, 4. https://doi.org/10.1051/epjpv/2024047. Blanchette, M. L., & Lund, M. A. (2016). Pit lakes are a global legacy of mining: An integrated approach to achieving sustainable ecosystems and value for communities. Current Opinion in Environmental Sustainability, 23, 28-34. https://doi.org/10.1016/j.cosust.2016.11.012. Bódis, K., Kougias, I., Taylor, N., & Jäger-Waldau, A. (2019). Solar photovoltaic electricity generation: A lifeline for the European coal regions in transition. Sustainability, 11(13), 3703. https://doi.org/10.3390/su11133703. Bolshev, V.; Yuferev, L.; Vinogradov, A.; Bukreev, A. Single-Wire Transmission Methods: Justification of a Single-Wire Resonant Power Transmission System. Energies 2023, 16, 5089. https://doi.org/10.3390/en16135089.
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