Ключевые слова: bill, cable, cash, cheap, coins, cost of light, cost of living, costs, ecology, economy, ecosustainability, ecosustainable, electricity, electricity costs, energy, energy tariffs, environment, eur, expenses, household budget, increase, increase in costs, increases, light, light bulb, lighting, low consumption, money, ordinary expenses, piggy bank, plug, rate increase, saving, savings, sustainability, sustainable, tariff, value,