Ключевые слова: alternative, architecture, arrow, bar, building, chart, city, class, concept, construction, consume, consuming, consumption, cost, design, eco, ecology, economic, economy, effective, efficiency, efficient, electric, electricity, energy, environment, environmental, garden, graph, green, high, home, house, improvement, low, performance, perspective, plants, power, property, rating, renewable, residential, save, solar, sustainable, symbol, technology, trees,