Electricity companies in Spain: how to choose and save
In Spain, you are free to choose which electricity company supplies your home. The market has been liberalised, meaning you have dozens of options, from the big traditional suppliers to fully digital ones, and you can switch whenever you like with no interruption to your supply and no penalty. This guide explains who they are, how they differ, and how to find the one that best suits your consumption.
What is an electricity supplier?
An electricity supplier (known in Spain as a comercializadora) is the company you sign your supply contract with and the one you pay your bills to. They sell you the energy, set their own tariff prices, and handle any admin related to your contract: changes to your contracted power, changes of account holder, or billing disputes.
Do not confuse them with the electricity distributor, which is the company that owns the electricity network and is responsible for physically delivering power to your home. You cannot choose your distributor, it is assigned based on your location. If you have a network fault or a problem with your meter, the distributor is who you need to contact.
Main electricity companies in Spain
These are the suppliers that set their own prices freely: they can offer you a fixed, variable, or wholesale-indexed rate. You compare and sign up with whichever suits your consumption best. This is where you will find the widest range of deals on the market.
Free market electricity companies
Get free information
Get free information
Get free information
- Green energy
- 100% online
Get free information
Get free informationIf you want to check whether these options are among the cheapest on the market, see our regularly updated analysis of the cheapest electricity companies available right now. Since the free market has hundreds of tariffs, using a professional tool such as the Selectra comparator will let you filter offers based on your actual consumption quickly and easily.
Regulated market companies
Only eight companies are authorised to offer the regulated electricity tariff (PVPC), whose price is set by the Government and varies every hour. They are the only ones through which you can apply for the Social Bonus, a discount of 42.5% for vulnerable households and 57.5% for those in severe vulnerability.
| Company | Group |
|---|---|
| Energía XXI | Endesa |
| Curenergía | Iberdrola |
| Baser COR | TotalEnergies |
| Comercializadora Regulada Gas & Power | Naturgy |
| Régsiti | Repsol |
| CHC COR | CHC Energía |
| Teramelcor | Gaselec |
| Energía Ceuta XXI | — |
Although these suppliers and their free-market equivalents belong to the same corporate group, they operate under different names and with separate contracts.
For example, Endesa Energía operates in the free market and Energía XXI in the regulated one, but both belong to the same corporate group.
Currently, 36% of Spanish households have the PVPC tariff. Not sure which market suits you best? See our PVPC vs free market comparison.
Renewable electricity companies
Green electricity companies offer 100% renewable energy certified by the CNMC through the Guarantee of Origin (GdO). This official certificate confirms that the energy you consume comes from renewable sources such as solar, wind, or hydroelectric power.
Renewable energy companies: full list
- Lucera
- Contigo Energía (formerly Gesternova)
- Fenie Energía
- Esferaluz
- Axpo Iberia
- Unieléctrica
- Alcanzia
- Podo
- OVO Energy
- Bulb Energía
- Holaluz
- Bassols
- Iberdrola
- Naturgy
- Repsol Luz y Gas
- TotalEnergies
- Wombbat
- GoiEner
- EnergyGo
- Energya VM
What you need to sign up with an electricity supplier
To sign up with an electricity supplier in Spain, you will need:
- ID: NIE or a valid passport (some companies process applications more quickly if you already have a NIE).
- Bank details: An IBAN to set up a direct debit. While you are legally allowed to use an account from within the euro zone, having a Spanish bank account is strongly recommended to avoid technical issues on companies' sign-up forms.
- A recent bill: Not strictly required, but highly recommended, as it contains all the technical information about your supply point that the new company will need to complete the switch.
Are there electricity companies that offer support in other languages?
For many people who move to Spain, understanding an electricity contract or handling a complaint can be challenging due to the language barrier. Choosing a company that can assist you in your own language is therefore a real advantage.
Many of the major companies and newer digital suppliers now offer customer service in English. This is particularly useful for foreign residents who are not yet fully confident in Spanish, as it allows you to manage your bills, adjust your contracted power, or resolve any query with complete clarity and no risk of miscommunication.
Frequently asked questions about electricity companies in Spain
How long does it take to switch electricity company?
The process typically takes between 1 and 20 working days. It is purely an administrative procedure, there is no interruption to your supply, and the switch is completely seamless from your perspective.
Can I switch electricity company whenever I want?
Yes, and switching is free of charge. However, before you do, check whether your current contract includes a minimum term clause, as some free-market tariffs may apply an early exit penalty.
Do electricity companies offer certified green energy?
Yes, though not all of them operate exclusively with renewable sources. Many suppliers hold the Guarantee of Origin (GdO) issued by the CNMC, an official certificate confirming that the amount of energy you consume has been fed into the grid from renewable sources. If sustainability is a priority for you, it is worth checking this in each tariff's terms and conditions.