179 indicator-based assessment of this potential is presented in Table 4. Table 4 – Assessment of the model's replication potential in other mines Criterion Brzesz cze mine Other mines in the Upper Silesian Coal Basin EU post-mining regions Occurrence of mine waters High High Medium - high Available infrastructure High Medium - high Varied Renewable energy potential Medium Medium Medium - high Model scalability - High Moderate Replication potential - High Medium The results obtained indicate that the proposed model demonstrates high scalability across several key parameters, including: ● mine water flows in the range of 5,000–20,000 m³/day; ● photovoltaic installation capacities of 2–20 MWp; ● methane capture volumes ranging from pilot-scale systems to full-scale CHP installations. The model is therefore adaptable to mining facilities of varying sizes and hydrogeological conditions. Its replication potential is assessed as high for other mines in the Upper Silesian Coal Basin and moderate to high for post-mining regions within the European Union, subject to site-specific technical and regulatory conditions. Overall, the results demonstrate that the integrated transformation approach substantially reduces environmental pressures, improves energy efficiency and emission performance, and enhances the long-term functional value of post-mining infrastructure. 5. DISCUSSION The proposed transformation model for the Brzeszcze Mine demonstrates that facilities in the phase-out stage can be reconfigured from entities generating long-term environmental liabilities into active environmental and energy infrastructure hubs. The quantitative assessment indicates that the integrated solution enables a reduction in salt loads discharged to surface waters of approximately 70,000–185,000 tonnes per year, a decrease in indirect CO₂ emissions of 4,000–7,000 tonnes per year, and a direct reduction in methane emissions corresponding to 0.5–2.0 million m³ CH₄ annually.
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