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.
Your CUPS number identifies the supply point connected to your meter and distributor records. To understand how the meter itself works, read our Spanish smart meter guide.
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. Once verified, you can also explore specialist solar tariffs that may suit your property better.
Verify your CUPS number automatically
Upload your electricity bill on our homepage and we will locate and verify your CUPS number for you.
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Frequently Asked Questions
Does my CUPS number ever change?
No. The CUPS number is tied to the physical supply point at your property, not the contract. It stays the same even if you change electricity companies or move house (the new house will have a different CUPS).
Can two properties share the same CUPS number?
No. Each electricity connection must have its own unique CUPS number.
Can I switch electricity supplier without knowing my CUPS number?
It is very difficult. Suppliers need the CUPS to identify exactly which meter to switch. If you don't know it, they cannot process the request securely.
Is my CUPS number the same as my meter number?
No. The meter serial number is physically on the device, while the CUPS is the administrative ID for the connection grid point. They are different codes.