Ключевые слова: accumulator, alternative, arrow, black, bright, car, charge, concept, conservation, creative, design, eco, ecology, electric, electricity, energy, environment, environmental, equipment, flat, graphic, green, icon, idea, illumination, illustration, industry, innovation, isolated, lamp, light, lightbulb, panel, power, recycle, recycling, reuse, set, sign, sun, sunlight, symbol, technology, waste, white,