How to switch your electricity provider in Spain

Before anything else: nobody comes to your flat. Your electricity is not cut, not for a single minute. You don't have to phone your current provider to "cancel". The whole thing is an administrative process that the new provider handles for you, and by Spanish regulation it takes a maximum of 10 working days from the moment they request the switch.

If you've been putting this off because the Spanish electricity system feels impenetrable, this is the short version, in plain English.

First, the thing nobody explains: there are two companies behind your plug

In Spain, two different companies are involved in your electricity supply:

1. The distribution company (distribuidora). Owns the cables, the substation, the meter. Regional. You don't choose it. There's only one for your area. The main ones are i-DE (Iberdrola area), e-Distribución (Endesa area), UFD (Naturgy area), E-Redes (EDP area) and Viesgo.
2. The retailer (comercializadora). Bills you. This one you can choose. And change. There are hundreds in Spain.

When you "switch electricity provider", what changes is the retailer. The distribution company stays the same. The cable to your home is the same. The meter is the same. Your power supply is not interrupted, because physically nothing changes. Only the company that issues your bill changes.

This distinction matters because once you understand it, the fear of "what if something goes wrong" mostly goes away. Nothing can physically go wrong. There's nothing physical to change.

What you need before you start

Not much. A recent bill, a few minutes.

• Your CUPS number. It starts with ES and has 20 characters total (18 digits plus two letters at the end). This identifies your supply point uniquely. It's on your bill, usually on the first page in a box labelled "Datos del suministro" or similar.
• Your DNI, NIE or passport number.
• A Spanish IBAN for the direct debit of the new bill.
• The exact supply address as it appears on the bill. If your bill says "Calle Mayor, 25, 3º B" and you write "Mayor 25", the distributor sometimes fails the cross-check and the switch is rejected.

That's it. You don't need the full bill, you don't need your old contract, you don't need to call your current provider.

The switch, step by step

Step 1: choose the new tariff

This is the only part that actually requires thought. The new tariff can be:

• Free market with a fixed price. You pay the same €/kWh all year, until you renew. Predictable.
• Free market indexed. You pay the wholesale hourly price plus a fixed retailer margin. Cheaper on good months, more expensive on bad ones.
• PVPC (regulated market). Price set by the State, varies every hour. Only offered by eight authorised "reference retailers" (more on those below).

Which one suits you depends on your consumption, your flexibility with timing, and how much you can stand bill variation. There's no universal answer.

Step 2: sign the contract and the switch authorisation

This is where a piece of paper appears that worries some people: the autorización de cambio de comercializadora (switch authorisation). It's the document where you give the new retailer permission to handle the switch with the distributor on your behalf. It's a regulatory requirement (CNMC, Spain's energy regulator) and it exists precisely to protect you. Without your signed authorisation, no one can switch your tariff.

You sign it online, normally with a click and an SMS code. Some retailers send a PDF for electronic signature. Keep a copy.

Step 3: the new retailer notifies the distributor

This happens behind the scenes. The new retailer sends the request to your distributor with your CUPS. The distributor validates the CUPS and that the person signing is the contract holder.

Step 4: you wait, briefly

By CNMC regulation, the switch must be executed within a maximum of 10 working days from the request. "Working days" means Monday to Friday excluding national bank holidays. In calendar terms that's typically about two weeks.

During this time:

• Your electricity works exactly the same. No outages, no flickers.
• Your old retailer keeps billing you until the switch date.
• Your old retailer may phone you trying to retain you with a counter-offer. They're allowed to try. You don't have to accept.

Step 5: first bill from the new retailer

Done. The final bill from the old retailer covers consumption up to the meter-reading day, with no penalty unless you had a permanence clause (see below).

Is there a cancellation fee?

In most standard residential tariffs, no. Spanish law caps any permanence penalty at 5% of the contract value corresponding to the estimated energy still to be supplied. In plain terms: if you have six months left on a permanence clause, the penalty can't be more than 5% of what you'd have paid for those six months of energy.

Most residential tariffs are sold without permanence. Before you switch, check your current contract for the word "permanencia". If it doesn't appear, you don't have one.

Permanence is common on tariffs that come with conditional discounts ("we'll give you 10% if you stay 24 months"). Those are the ones that usually create surprises.

The Comercializadoras de Referencia (the eight retailers allowed to offer PVPC)

If you want the regulated PVPC tariff, only these eight retailers are authorised. The PVPC terms are identical across all of them, what changes is the group behind them and the territory:

1. Energía XXI (Endesa group)
2. Curenergía (Iberdrola group)
3. Comercializadora Regulada Gas & Power (Naturgy group)
4. Régsiti (Repsol group)
5. Baser COR (EDP España group)
6. CHC COR (CHC Energía)
7. Teramelcor S.L. (Melilla only)
8. Energía Ceuta XXI (Ceuta only)

Free-market retailers can be any of the hundreds active in Spain.

If you're renting and the electricity is in your landlord's name

Common situation. Two scenarios:

• Electricity is in your name. You switch without asking anyone. The landlord has no say. It's your supply contract while you live there.
• Electricity is in the landlord's name (or the previous tenant's). Two options. First, change the contract holder (put it in your name, then switch tariff). Second, ask the landlord in writing to switch on your behalf. The first option is cleaner because it puts you in control.

What you should not do is assume you're stuck with the tariff you inherited. You're not.

If you signed by phone and now you're not sure

You have 14 calendar days to withdraw from a contract signed at distance (phone, online, doorstep). This is the consumer's right of withdrawal (derecho de desistimiento), set out in Spain's Royal Legislative Decree 1/2007 (the General Law for the Defence of Consumers and Users) and refined by rulings of the European Court of Justice and the Spanish Supreme Court.

How to exercise it properly: in writing, with proof of receipt. A burofax (certified Spanish postal service with legal value) or a registered letter with return receipt are the safest options if there's ever a dispute. A simple email is common practice but doesn't carry the same evidentiary weight as a burofax. Don't rely on a phone call alone, if the retailer later says "no record" you have no proof.

Frequently asked questions

How long does the switch actually take?

By regulation, a maximum of 10 working days from the moment the new retailer requests the switch. In practice, around two calendar weeks depending on bank holidays.

Will my electricity be cut off during the switch?

No. The switch is purely administrative. The distributor doesn't touch your meter, doesn't interrupt supply, doesn't send anyone to your home.

Do I have to call my current provider to cancel?

No. The new retailer handles the cancellation for you through the regulated channel between retailers. Your old retailer finds out automatically and stops billing you from the switch date.

What if I change my mind?

You can switch back at any time, with no penalty if there's no permanence clause. Just don't bounce around: each switch involves a meter reading and roughly two weeks of admin.

What if my CUPS is wrong on the bill?

Get it corrected by your current retailer before initiating a switch. A switch with an incorrect CUPS will be rejected by the distributor.

Can I switch as a non-resident or short-term tenant?

Yes, as long as you have a valid ID (NIE, passport for non-Spanish residents) and the supply is in your name. Short-term tenants on six-month leases can switch, although depending on the new tariff there may be a permanence clause to watch out for.

Does switching affect my credit history?

No. Spain doesn't have a unified consumer credit score in the way the UK does. Disputes with your old retailer stay with them, not with the new one.

Things worth fixing before you switch (while you're at it)

Three things, quickly:

1. If your contracted power is oversized. Tenants often inherit 5.75 kW or higher because the previous landlord wanted a buffer. If you live alone or as a couple and never trip the breaker, you're paying a fixed cost every month you don't need. Ask the new retailer to adjust your kW at the time of the switch.
2. If your bill has add-on services (maintenance, home assistance, electrical protection). These are sold separately by the retailer and aren't part of the tariff. They stay with the old retailer unless you cancel them explicitly.
3. If you have an unpaid bill. The distributor can reject the switch until it's settled.

In short

Switching electricity provider in Spain is one of the simpler administrative processes you'll deal with as a resident here. No one comes to your home, your power is never cut, you don't have to call your old provider, the new retailer handles everything. The only part that requires thought is which tariff suits your consumption.

If you'd rather skip that step, upload your bill to Zorrito. We'll read it, in English, and tell you whether there's a better tariff for your real usage. If there isn't, we'll tell you to stay put. No phone calls. That's a written promise.