1. Fixed supply costs (standing charge): standing charge is an amount charged per month, per quarter or per year. Energy suppliers are free to levy standing charges and in deciding the amounts.
2. Variable supply costs: costs determined based on the actual annual consumption of gas in m3 or electricity in kWh consumed by a household.
3. In addition, an extra transmission surcharge is levied on natural gas. As of 2005, there is a surcharge on the cubic metre price for transmission of natural gas via the Gasunie’s national transmission grid. This is the transmission surcharge on gas supply. This surcharge is determined by the energy supplier and varies per region.