Ключевые слова: alternative, blue, campus, cell, closeup, collector, conservation, construction, conversion, electric, electrical, electricity, energy, environmental, environmentally, flower, foldable, friendly, groningen, industry, innovation, innovative, nature, netherlands, nobody, panel, pattern, photovoltaic, power, reflection, renewable, revolving, sky, smart, solar, solar tracker, sun, sunlight, tech, technology, utility,