energy, costs, european, expensive, increase, money, background, banknote, bill, budget, cash, consuming, consumption, cost, currency, debt, economy, efficient, electric, electrical, electricity, electricity costs, energy cost, energy costs, environment, euro, europe, expense, growth, home, light, outlet, paper, pay, payment, plug, power, price, problem, rise, rising, save, saving, shadows, socket, supply, symbol, technology, top view