In 2026, the legal landscape took a major turn in favour of the consumer. Since February, the electricity sector has been subject to new rules on sales calls and home visits which, generally speaking, ban both sales calls and commercial visits unless the user has explicitly requested them in advance. The publication of Royal Decree 88/2026 in the BOE (Official State Gazette) on 11 February 2026 reinforces this restriction in the energy sector.

Why you are still receiving energy sales calls

Despite the general ban, many users wonder why their phones keep ringing with these types of calls. The answer usually lies in the legal loopholes around consent and companies failing to update their databases.

When can a company call you?

Legally, a company can only contact you if you have an active contract with them. In this case, the call must be strictly limited to matters regarding the service you already receive. Another legal scenario is if you have explicitly requested information about an offer – for example, if you filled out a web form asking for a callback.

What changes if you have given your consent?

If you ticked a box agreeing to receive marketing communications when signing up for a service or entering a prize draw, the company has the green light to call you. However, the 2026 regulations require that consent to be specific to the purpose of the sales call.

Furthermore, companies are now obliged to record the entire call and keep it for at least 20 days to prove that the process was legal and transparent.

What changes if you are no longer a customer or never were?

If you have never had a relationship with the calling company, or if you were a customer years ago but no longer are, the rules are clear: they are banned from making unsolicited marketing or sales calls to you.

Today, cold calling individuals with no prior contact is an illegal practice subject to heavy fines by the Spanish Data Protection Agency (AEPD).

What to do to stop receiving sales calls

Regaining control of your phone requires a few simple strategies, which we explain below.

Sign up to the Robinson List

The Robinson List is a free opt-out service for marketing communications. By signing up, you notify all companies with which you do not have an active relationship that you do not wish to receive their marketing material. It is the strongest proof that you have revoked any generic marketing permissions.

Withdraw your consent if you gave it

If you notice that a company you do business with is calling you too often, you can exercise your right to withdraw your consent at any time. Simply state this verbally during the call or through their customer service channels. The company must stop all marketing contact immediately after your request.

Exercise your right to object

You have the right to explicitly forbid your contact and energy supply details from being shared through the Supply Point Information System (SIPS). This prevents third-party companies from using your technical data to make 'personalised' offers without your permission.

Ask them to record that you do not want marketing calls

Don't just hang up. Before ending the call, formally ask the agent to record in their system that you do not wish to receive any more marketing communications from their company. This is a crucial preliminary step if you ever consider filing a complaint later on.

How the Robinson List works and when you will notice the difference

While it is a highly effective tool, it is important to understand its technical and time limitations so you don't get frustrated.

Which channels you can block

The Robinson List allows you to manage your privacy across four fronts:

• Telephone (landline and mobile).
• Email.
• Text messages (SMS).
• Postal mail.

You can choose to block all of them or just the ones you find most annoying.

Who does it actually protect?

It protects consumers against companies they are not customers of. If you are a customer of a certain company, they can continue to contact you about matters relating to the management of your current contract, unless you exercise your right to object directly with them.

Why it doesn't take effect immediately

Telemarketing companies tend to download exclusion lists periodically. As a result, it can take between two and three months for your registration to become fully effective. If you receive a call the day after signing up, technically, the company might still be processing your registration.

What to do if the calls continue

If you are still receiving calls after the Robinson List’s adjustment period has passed, you need to start documenting the situation.

Keep a record of the number, date, and time

For any complaint to be successful, you need evidence. Always note down the phone number calling you, the exact date, and the time of the call. Identifying the company responsible is also vital. Remember, they are legally obliged to identify themselves during the conversation.

File a complaint with the company

The first step is to lodge a formal complaint with the customer service department of the company in question. They are obliged to respond within a maximum of 15 working days. If they ignore your request or continue calling you, you now have grounds to escalate the case.

When to turn to the AEPD or Consumer Affairs

If the harassment persists after your initial complaint, you can report the incident to the Spanish Data Protection Agency (AEPD) for unlawful data processing. You can also turn to the consumer protection bodies in your autonomous community.

How to tell if a call is a sales pitch or an outright scam

It is very important to distinguish between a standard sales call and an attempted phone scam, or 'vishing'.

Signs of pressure or urgency

Scammers often use fear to strip away your ability to react. Be wary of phrases like 'your contract is going to expire in 12 hours' or 'we are going to cut off your electricity if you don't settle your debt right now'.

A legitimate company will never pressure you over the phone to make an immediate decision like that.

Lack of transparency about the company

Endesa will always clearly identify itself as Endesa Energía. If you hear phrases like 'we are calling from your energy supplier' or 'we are an agency linked to your postcode', alarm bells should start ringing. When in doubt, before taking another step, check who called you using our official authorised number verification tool.

What information you should never give out over the phone

Never hand over passwords, codes received by SMS, or full bank details during a call you did not initiate. Be especially careful with 'phishing', as criminals may use fraudulent text messages or emails to try and steal your login credentials.

Furthermore, this kind of telephone harassment with unwanted offers is not the typical role of an energy advisor, who, as a professional consultant, simply analyses your bills with the aim of achieving real savings.

What changes in 2026 for energy suppliers

The entry into force of Royal Decree 88/2026 brings new developments that favour consumers.

A blanket ban on unsolicited calls

The regulations explicitly ban cold calling for acquiring new customers. This means no energy supplier can call you if you are not their customer or haven't expressly requested a call.

A ban on unrequested telephone contracts

Not only is the call itself banned, but also the act of setting up contracts without a prior request from the consumer.

In addition, unannounced door-to-door sales visits have been completely banned by law, offering special protection for vulnerable groups against in-person scams.

Why this strengthens your ability to complain

Because these bans are enshrined in a Royal Decree, any breach by a company is a clear administrative offence. This puts you in a strong legal position, ensuring that your complaints to the AEPD or Consumer Affairs are successful and lead to exemplary fines.

FAQ

Does the Robinson List stop all calls?

It stops sales calls from companies where you are not a customer. It does not stop calls from scammers ('vishing'), as they operate outside the law, nor does it block informational or security calls.

What happens if I used to be a customer?

If the relationship has ended, the company cannot call you to sell new products unless you kept your marketing consent active.

How long does it take to become effective?

The Robinson List usually takes between two and three months to be respected by all operators due to the update cycles of their databases.

Where do I complain if they keep calling me?

First, to the company itself. If you do not receive a satisfactory response within 15 days, you can complain to the AEPD or your regional consumer affairs services.

How do I know if they are really calling from my company?

Demand that they identify themselves clearly and use official verification tools. If you have the slightest suspicion, hang up and call the number shown on your latest official bill yourself.