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What is a CUPS number and why it matters

Every electricity supply point in Spain has a CUPS number.

It is one of the most important details on your electricity bill, yet most people do not know what it is or why it matters.

Understanding your CUPS number helps you switch suppliers smoothly and avoid unnecessary delays.

What does CUPS mean

CUPS stands for Código Universal de Punto de Suministro.

It is a unique identifier assigned to your electricity supply point, not to you as a customer.

Think of it as an ID number for your property’s electricity connection.

What a CUPS number is used for

The CUPS number allows electricity suppliers to:

  • Identify your exact supply point
  • Access technical details about your connection
  • Process a supplier change correctly
  • Avoid errors when switching tariffs

It stays the same even if you change electricity companies.

Where to find your CUPS number

You can usually find your CUPS number:

  • Near the top of your electricity bill
  • In the contract details section
  • Labelled clearly as “CUPS” followed by letters and numbers

It often starts with “ES”.

Is it safe to share your CUPS number

Yes. Sharing your CUPS number is normal and required to switch suppliers.

It does not give access to your bank details or allow changes without your approval.

What happens if your CUPS number is wrong

If the CUPS number is incorrect or missing, switching can be delayed or rejected.

That is why uploading your electricity bill is the easiest way to ensure the correct information is used.

Verify your CUPS number automatically

Upload your electricity bill on our homepage and we will locate and verify your CUPS number for you.

Upload your electricity bill

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Frequently Asked Questions

Ändras mitt CUPS-nummer någonsin?

Nei. CUPS-numret är knutet till den fysiska anslutningspunkten på din fastighet, inte kontraktet. Det förblir detsamma även om du byter elbolag eller flyttar (det nya huset kommer att ha ett annat CUPS).

Kan två fastigheter dela samma CUPS-nummer?

Nej. Varje elanslutning måste ha sitt eget unika CUPS-nummer.

Kan jag byta elleverantör utan att veta mitt CUPS-nummer?

Det är mycket svårt. Leverantörer behöver CUPS för att identifiera exakt vilken mätare de ska byta. Om du inte vet det kan de inte behandla begäran på ett säkert sätt.

Är mitt CUPS-nummer detsamma som mitt mätarnummer?

Nej. Mätar-serienumret sitter fysiskt på enheten, medan CUPS är den administrativa ID:n för nätanslutningspunkten. De är olika koder.