Ключевые слова: alternative, angle, background, cell, clean, climate, cold, concept, day, eco, ecological, ecology, electric, electrical, electricity, energy, environmental, field, future, generation, generator, industrial, industry, inefficient, landscape, light, modern, natural, nature, no people, nobody, panel, panels, photovoltaic, plant, power, renewable, sky, snow, solar, sun, sunlight, sunny, supply, technology, turbine, windmill, winter,