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Endesa - Electricity, Gas, People

Regulated market electricity access tolls

A new regulation is changing electricity access tolls and tariffs. Here is how it's going to affect your Energía XXI electricity bill in 2021.

On 1 June 2021 new regulations came into force  (*) on access tariffs and other regulated concepts. These have been approved by the Spanish Markets and Competition Commission (CNMC) and the Government and they affect all electricity consumers in Spain.

What are these changes?

1. The current access tariff is split into two

The current access tariffs were split into two new regulated concepts:

  • The tolls, have been fixed by the CNMC and are intended to cover the cost of access to transport and distribution networks.
  • If your supply has a contracted power of more than 15 kilowatts, here's how your current access tariff changes.

All supplies with contracted power of less than or equal to 15 kilowatts were subject to a single toll 2.0 TD, with time discrimination for all of them. The charges that correspond to it are called "charge segment 1"which maintain the same structure as the new toll.

If your supply has a contracted power of more than 15 kilowatts, here we will explain the changes made to your tariff.

2. Three energy periods and two power periods

Tariffs had a single price for the energy consumed, regardless of the time of day, unless a time-of-use access tariff had been contracted (with 2 or 3 time bands). For contracted power, access tariffs were the same price for all hours of the day.

With the new regulations, tolls and charges have 2 time bands for power and 3 time bands for consumption, with different prices in all of them.

Consumption: The energy term for these tolls and charges has 3 time bands (peak, standard and off-peak) with different prices depending on the time of day when it is consumed, with the following calendar depending on the territory in which you live:

Mainland/Balearic Islands/Canary Islands

Monday to Friday:

  • Peak Period (highest price): 10am to 2pm and 6pm to 10pm.
  • Standard Period (price somewhat lower): 8am to 10am, 2pm to 6pm and 10pm to 12 midnight.
  • Off-peak Period (lowest price): 12 midnight to 8am.

All hours at the weekend and on public holidays (**): Off-peak Period (lowest price).

infographic billing periods for consumption in the peninsula, the Balearic Islands and the Canary Islands

Ceuta and Melilla

Monday to Friday:

  • Peak Period (highest price): 11am to 3pm and 7pm to 11pm.
  • Standard Period (price somewhat lower): 8am to 11am, 3pm to 7pm and 11pm to 12 midnight.
  • Off-peak Period (lowest price): 12 midnight to 8am.

All hours at the weekend and on public holidays (**): Off-peak Period (lowest price).

Infographic billing periods for consumption in Ceuta and Melilla

Contracted Power: The power term for these tolls and charges have 2 time bands. That is, two different powers may be contracted, a state-of-the-art power that applies to peak and standard consumption periods, and off-peak power that applies to the off-peak consumption period.

The power term for these tolls and charges has 2 time bands (peak and off-peak): 

Monday to Friday​:

  • Peak Period: 8am to 10am.
  • Off-peak Period (lowest price): 12 midnight to 8am.

All hours at the weekend and on public holidays (**): Off-peak Period (lowest price).

infographic periods billing power

What does it mean that you can contract two different powers?

Contracted power is measured in kilowatts (kW) and it is the maximum electricity power that you can use simultaneously. In everyday terms, it is the maximum number of appliances you can use at the same time.

The previous regulations only allowed you to have a single power. That is why each user was forced to contract enough power to meet their maximum requirements, even if these were concentrated in a very specific time band.

With the new regulations, you can have a higher power and a lower power according to your needs. For example: If you have an electric car and recharge it at night or on weekends, or if you can concentrate your electricity consumption primarily on weekends or weekdays at night, then you can choose higher power in the off-peak hours.

What do I need to do to adapt to the changes?

Nothing. From 1 June 2021 the conditions of your tariff were adapted automatically, without you having to complete any formalities.

Also, from that date, by default you maintained the same power that you had previously contracted in the new time bands (peak and off-peak) will be maintained. In the following 12 months you will be able to contract different powers for these two time bands up to two times and without charge, always providing the new contracted power is the same as or less than the highest of the two contracted powers when the change is made, otherwise you have to pay the cost of connection rights in accordance with the regulations in force.

The new transportation and distribution tolls and the new charges have new conditions and prices, which are reflected in your bill. Furthermore, the format of your bill has changed to adopt the mandatory format and conditions established in the Resolution of 28 April 2021.

Here are the details of how these changes to tolls and charges will appear on your bill from 1 June 2021.

Are you going to pay more or less on your Energía XXI electricity bill?

The new toll and charge regulations are aimed at giving you flexibility in your contracted power and promoting efficient consumption, so the answer to this question will depend on how efficient you become in your energy consumption: We suggest that you concentrate your energy consumption in the off-peak hours as far as this is possible and optimise your power contract.

In any case, if you have any questions, please do not hesitate to contact our Customer Service channels:


For further information, go to the CNMC website at:


(*) The regulation that came into force on 1 June 2021 is: (1) Circular 3/2020 of the Spanish Markets and Competition Commission establishing the methodology for the calculation of electricity transport and distribution tariffs, (2) Royal Decree 148/2021 of 9 March of the Ministry of Ecological Transition and the Demographic Challenge establishing the methodologies for calculating the charges for the electricity system, (3) the CNMC Resolution of 18 March 2021 establishing the values of access tariffs to applicable electricity transport and distribution networks from 1 June 2021 and (4) Order TED/371/2021 of 19 April, of the MITERD, setting prices for electricity system charges and capacity payments that apply from 1 June 2021.

(**) Excluding both replaceable and non-fixed-date holidays and 6 January.