Change of supplier in Spain

The CNMC has approved a standardized information submission format through which the Autonomous Communities and the cities of Ceuta and Melilla will send information on registrations, cancellations, or modifications of self-consumption so that the distributor can officially modify consumers' access contracts, thereby simplifying the process for the consumer.

This format will apply to self-consumption connected to low voltage, where the generator installation is low voltage and the installed generation capacity is less than 100kW.

Format for the exchange of information on self-consumption between Autonomous Communities and autonomous cities, and electricity distributors

Supervision reports

All supervision reports on changes of electricity and gas marketers

All supervision reports on verification of consent in marketer changes 

 Supply points in the electricity market by groups

Changes from 2018 to 2025 are shown

• As a consumer, you have the right to freely choose the supplier with whom you want to contract the electricity or gas supply
• Changing the supplier is a free process
• The maximum period to complete the supplier change is 21 days
• The new supplier is responsible for carrying out all procedures related to the supplier change

Informative guide for changing the electricity or gas supplier 

Format of information exchange files between Autonomous Communities and Cities and distributors for the submission of information on self-consumption of electric energy

Approved by the Regulatory Oversight Chamber of the CNMC in its session on November 13, 2019

The CNMC has a private space for companies related to the activity of Supplier Switching

You can access the space by clicking here: