Ключевые слова: alternative, background, blue, button, cell, circle, clean, concept, conservation, design, eco, ecology, electric, electrical, electricity, energy, environment, environmental, equipment, flat, generation, generator, graphic, green, house, icon, illustration, industry, isolated, lightning, long, modern, nature, panel, power, renewable, shadow, solar, station, sun, sunlight, supply, symbol, technology, white, yellow,