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Copper is a highly efficient conductor of electricity and heat used in renewable energy systems to generate power from solar , hydro , thermal and wind energy across the world . Renewable energy sources provide nearly one quarter of the world ’ s power and copper plays an important role in making it as efficient as possible with minimal impact on the environment . Copper forms part of the materials currently used for photovoltaic solar cells , present in the technology ’ s cabling , earthing , inverter , transformers and photovoltaic cell ribbons . A photovoltaic solar power plant contains approximately 5.5 tons of copper per megawatt of power generation .

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