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Oceanic windmill farm just outside Copenhagen. These wind turbines are a symbol of a sustainable energy source in a progressive, smart city.
petroleum oil refinery in industrial estate at night, drone aerial view. Fuel and power generation, petrochemical factory industry, or environmental air pollution concept
Renewable energy. Hydrogen production and storage using wind power.
Wind farm in Scotland with turbines for electrical energy generation - Wind farm, power station for clean energy production from wind - Renewable energy and environment concepts

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