Starting from the 1st of June 2021, a new model for electricity bills and time slots for small consumers was implemented - with contracts of less than 15 kilowatts, such as shared apartments. 

The new model of transmission and distribution fees

Transmission and distribution fees, as well as electricity system charges, are one of the regulated costs of the electricity system. They are regulated by directive 3/2020 of 15 January, which sets the methodology for their calculation, and by the CNMC Resolution of 18 March 2021, which sets their values.
About these fees:

• They are separated by tariff voltage levels and time slots.
• They are based on a billing period for the subscribed power and a billing period for the active energy consumed.
• If so, it will also be applied a billing period for the demanded energy (when the contracted capacity is exceeded) and a billing period for the reactive energy.

It should be remembered that the majority of domestic consumption is regulated at low voltage (supply points with voltage less than or equal to 1 kilovolt) and for the subscribed energy less than or equal to 15 kilowatts. Keeping this in mind, the following types of fees can be considered, together with their time slots.

The 2.0TD rate

• It includes the 6 previously existing national consumption rates (2.0A, 2.0DHA, 2.0DHS, 2.1A, 2.1DHA and 2.1DHS).
• This is the fee for the majority of domestic customers.
• This is the applicable rate for low voltage power supplies (less than or equal to 1 kilovolt), with a purchased power less than or equal to 15 kilowatts for all billing periods.
• It is composed of 2 terms of purchased power and 3 terms of consumed energy. This indicates that the price of the fee may vary according to the day and time of electricity consumption.

Other rates 

• Low voltage for purchased power above 15 kilowatts (3.0TD), replacing the previous 3.0A.
• High voltage (6.1TD, 6.2TD, 6.3TD, 6.4TD).
• 2.0TDA (low voltage connected power supplies with a subscribed power of less than or equal to 15 kilowatts applied to self-consumed persons for self-consumed energy).
• 3.0TDA (low voltage connected power supplies with a contract power of more than 15 kilowatts applied to self-consumed persons for self-consumed energy).
• 6.1TDA, 6.2TDA, 6.3TDA and 6.4TDA.

However, the most common fee among the domestic users is the 2.0TD.

Timer slots for the 2.0TD rate

In terms of electricity consumption, customers with a 2.0TD fee will have a hourly discrimination of 3 time slots in the billing model. This differentiates the hours of the year into 3 types:

• Period 1. These are the time slots of the day when the consumed electricity is the most expensive

- Between 10 a.m. and 2 p.m. 
- Between 6 p.m. and 10 p.m. 

• Period 2. These are the times of the day when electricity is slightly cheaper:

- Between 8 a.m. and 10 a.m. 
- Between 2:00 p.m. and 6:00 p.m. 
- Between 10 p.m. and midnight 

• Period 3. This is the time slot when electricity is the cheapest:

- Between 12:00 am and 8:00 am
- All Saturdays, Sundays and public holidays (excluding both replaceable holidays and holidays without a fixed date).

Likewise, when purchasing electricity, customers who have the 2.0TD fee will have 2-period time discrimination in the billing, which differentiates the hours into 2 types: 

• Period 1 (peak). This is the time slot in the day when electricity is most expensive. It is from 8 a.m. to midnight.
• Period 2 (off-peak). This is the time slot when electricity is the cheapest. Between midnight and 8 a.m.

The cheapest time slot also includes the entire day on Saturdays, Sundays and national holidays (excluding both replaceable and non-fixed public holidays).