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This project proposes an innovative hydrogen fuel cell system aimed at decarbonizing public transport. To overcome the low efficiency of standard hydrogen systems, the invention integrates Thermoelectric Generator (TEG) modules to capture waste heat and convert it back into electricity. Operating as a closed-loop cycle, the system utilizes surplus solar or hydropower for water electrolysis and recycles byproduct water to remain self-sustaining. This approach aligns with the Sustainable Development Goals to provide clean, reliable energy solutions while reducing urban carbon footprints.