Ключевые слова: alternative, bulb concept, bulb idea, bulb light, clean, concept, conservation, development, different, earth, eco, ecological, ecology, efficient, electric, electricity, energy, energy type, engineering, environment, environmental, friendly, generation, generator, green, illustration, industrial, industry, light, modern, natural, organic, planet, power, power plant, production, renewable, resource, scale, source, station, supply, sustainability, sustainable, technology, type, types, utility, water,