Ключевые слова: air, battery, clean, concept, eco, ecology, electric, electricity, energy, environment, environmental, factory, fan, farm, fuel, generation, generator, glyph, green, icon, illustration, industry, isolated, logo, mill, minimal, pictogram, plant, power, propeller, renewable, sign, silhouette, solar, solid, symbol, technology, tower, turbine, water, wheel, wind, windfarm, windmill, windpower,