Ключевые слова: africa, alternative, architecture, blue, building, business, cape, cell, clean, collector, conservation, crystalline, ecological, ecology, economy, electric, electrical, electricity, emission, energy, environment, environmental, equipment, factory, generation, green, home, industry, light, modern, panel, photovoltaic, poly, power, renewable, resource, roof, rooftop, silicon, sky, solar, south, sun, sunlight, supply, sustainable, technology, town, zero,