There are mainly two types of invoices:

  • Fixed tariffs: They offer a fixed price per kilowatt-hour (kWh) for the duration of the contract, usually 12 or 24 months. They are ideal for those who want predictability in their bills.

  • Variable tariffs: The price per kWh varies according to fluctuations in the wholesale energy market. They may offer lower prices when the market is favourable, but carry the risk of increases during periods of high prices.