Ключевые слова: background, banking, battery, bills, business, buying, cash, charge, concept, cost, credit, crisis, currency, current, debt, economy, electric, electrical, electricity, electronics, energy, euro, expense, expensive, finance, financial, grey, heat, hot, increases, loss, money, object, pay, payment, pipe, power, pressure, price, public, radiator, regulator, save, saving, tax, technology, temperature, thermalutility, warm, white, winter,