Ключевые слова: bill, budget, cash, clean, coins, commercial, concept, consumption, cost, counter, current, day, demand, domestic, economy, efficient, electric, electrical, electricity, energetic, energy, expense, expenses, expensive, fast, finance, high, home, hour, household, illustration, industry, invoice, kilowatt, kwh, measure, meter, modern, power, price, reduce, residential, retro, running, save, savings, smart, solar, supply, watt,