Ключевые слова: alternative, background, bare sky, blade, business, clean, clear, clouds, eco, ecology, efficiency, electric, electricity, energy, environment, environmental, equipment, generator, green, green energy, industrial, industry, landscape, low, metal, mill, modern, nature, object, outdoor, power, production, propeller, renewable, screensaver, sky, source, space, structure, sustainability, technical, technology, turbine, turbines, wind, wind farm, wind farm farm, windmill, windmills,