Ключевые слова: alternative, background, bulb, business, calculator, clean, composition, concept, copy, development, eco, ecofriendly, ecological, ecology, efficiency, electric, electricity, energy, environment, flat, generation, governance, grass, green, job, lay, light, model, modern, nature, nobody, object, panel, paper, power, renewable, resource, social, solar, space, sustainability, sustainable, technology, text, top, turbine, view, wind, windmill, work,