Ключевые слова: alternative, blue, bulb, cell, conservation, eco, ecological, ecology, economy, electric, electrical, electricity, energetic, energy, energysaving, environment, environmental, equipment, generation, global, green, innovation, lamp, led, light, metal, modern, natural, nature, outdoors, panel, photovoltaic, pole, power, powered, renewable, sky, solar, solar powered street light, solarpowered, space, street, streetlight, sun, sunlight, sustainable, system, technology,