Ключевые слова: alternative, blue, building, cell, cheap, clouds, collector, conductors, eco, ecological, economical, electric, electricity, energy, environment, environmental, exterior, free, generate, generator, global, heat, house, industry, innovation, innovative, multistorey, new, panel, power, private, renewable, resource, roof, save, sky, solar, solar panels, space, sun, sunlight, sunny, supply, system, technology, thermal, wall, warm,