Electricity final customers are divided into two categories depending on how their consumption is measured: interval-metered customers and standard load profile customers.

Most of the electricity supplied to non-household customers is to interval-metered customers whose consumption is measured at short intervals. Interval-metered customers are customers that consume a large amount of electricity and so most of them are industrial customers or other non-household customers with a high level of consumption.

There are three types of electricity supply contracts. They differ in terms of the contract conditions, suppliers’ obligations and prices: default contracts with the default supplier, non-default contracts with the default supplier, and contracts with a supplier other than the local default supplier.