Special attention should be given to your refrigerator. According to the “Study on energy consumption of the residential sector in Spain” carried out by the Institute for Energy Diversification and Saving (IDAE), refrigerators use over 30% of the total energy expenditure in the household. A refrigerator with an A++ rating consumes 220 kWh per year. The refrigerator in your parents’ house may have a C or D rating and will exceed 600 kWh.
Household appliances also age quickly and increase your electricity tariff. An old television or a hairdryer that is a few years old, require more energy to function.