Ключевые слова: arrow, audit, building, certificate, charge, classification, concept, concepts, conservation, consumption, cost, diagram, eco, ecology, economic, economy, efficiency, efficient, electric, electricity, energy, energy efficiency, environment, environmental, global, graph, green, home, house, ideas, improvement, label, light bulb, performance, power, rate, rating, recycling, renovation, save, saving, scale, technology, zero,