This drop compared to 2016 is due to a decrease in the "Energy and supply" and "Network costs" components. In 2017, the average residential customer paid 647 € per year (or 54 € per month) for an average consumption of electricity.

In 2017, national gas consumption was slightly lower compared to the previous year. This decrease is mainly due to a drop in consumption in the electricity generation sector (cogeneration). The average residential customer paid 1216 € per year (or 101.3 € per month) for an average consumption of natural gas.