How to find the CUPS number of a property in Spain (even without a bill)

Updated on 26/10/2026 · Voltaris, independent energy advisers in Spain

The CUPS is your supply point's licence plate: without it you can't change account holder, supplier or power. It is usually close at hand; when it isn't, there are three ways to get it.

What the CUPS is

It is the Universal Supply Point Code (Código Universal del Punto de Suministro): 20 or 22 characters starting with ES. It identifies your installation and doesn't change when you switch supplier or account holder. Electricity and gas each have their own.

The first digits tell you your distributor: for example, ES0021 is i-DE (Iberdrola group) and ES0031 is e-distribución (Endesa group).

Where to find it

• On the bill, in the supply or contract details section.
• In your supplier's app or customer area.
• In the supply contract.

Can you look it up by address?

There is no reliable public lookup: the CUPS is linked to an account holder and protected by data law. Websites promising to find it from an address alone are not official. If you have no bill:

• Ask the local distributor (i-DE in most of the province of Alicante), identifying yourself as the account holder or with the property documents.
• Datadis, the distributors' official platform, shows it if you are the account holder.
• Ask the previous owner, landlord or property manager for an old bill.

Frequently asked questions

Where is the CUPS on a Spanish electricity bill?

In the supply or contract details section. It starts with ES and has 20 or 22 characters.

Can I find the CUPS by address?

There's no reliable public lookup. Ask the distributor, check Datadis if you're the account holder, or ask the previous owner for a bill.

Does the CUPS change if I switch supplier?

No. It stays the same when you change supplier or account holder.