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How to Increase Electrical Power in Your Home in Spain

21 Aug, 2026 MaciekFeniksAdmin

Is your current electrical supply not enough for your appliances? Do the circuit breakers trip too often? Here is how to increase the contracted electrical power in your property in Spain and what may be required.

01. First step: Contact your electricity supplier

The first step is to contact your electricity supplier and request an increase in contracted power.

How does it work? If you already have a valid electrical certificate (Boletín Eléctrico / CIE) and it allows a higher power level, the supplier can normally process the increase.

In some older installations, it may be necessary to modify or replace certain protective devices, but in many cases no major electrical work is required.

02. What if the supplier requires a new electrical certificate?

If the existing documentation does not allow the requested power increase, the electrical installation may need to be inspected.

You will need a qualified electrician authorised to certify electrical installations in Spain.

The electrician will:

  • inspect the electrical installation,
  • check whether it complies with current requirements,
  • determine whether it can safely support the requested power,
  • identify any modifications that may be necessary,
  • and, when everything complies, issue the required electrical certificate.

03. What if modifications are necessary?

Older installations do not always meet the requirements needed for a higher electrical power level.

Depending on the condition of the installation, the work may include:

  • modifications inside the electrical distribution board,
  • replacement or adjustment of protective devices,
  • upgrading parts of the electrical installation,
  • or work related to the supply line between the meter and the property, depending on the specific situation.

We always try to find a solution that is safe, compliant and appropriate for the property, without carrying out unnecessary work.

Once the required modifications have been completed and the installation complies with the applicable requirements, the new Boletín Eléctrico / CIE can be prepared and the power increase can proceed.

Do you need to increase the electrical power in your property?

Fenix Electricity provides electrical installation services and electrical certification on the Costa Blanca.

We can inspect your installation, explain what needs to be done and help you through the process.

Contact us to discuss your property and the power increase you need.

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