Ключевые слова: alternative, appliance, background, bedside, building, certificate, chart, class, classification, colorful, consumption, cost, design, diagram, eco, ecological, ecology, efficiency, efficient, electric, electricity, energy, environment, graph, green, home, house, illustration, indoors, industry, label, lamp, light, object, power, rating, red, reduce, renewable, save, saving, scale, sign, sustainability, symbol, system, table, technology,