How to read your Spanish electricity bill: what each line means
A Spanish electricity bill has more small print than a rental contract, and it is written in a language nobody teaches. Here it is concept by concept, so you know exactly what you are paying for.
The two blocks that explain almost everything
Underneath all the concepts, your bill has two parts:
- Término de potencia (power term): what you pay to have electricity available. It is fixed, calculated per contracted kW and per day, and charged even if you use nothing.
- Término de energía (energy term): what you pay for the electricity you actually used, in kWh.
In many homes with moderate use, the power term is a much bigger share of the bill than people assume. That is why adjusting it has so much effect.
The CUPS
It is a long code starting with ES that always appears on your bill. It identifies your supply point uniquely, like a number plate. It does not change when you change company, and it is what you will be asked for in any procedure.
The periods: P1, P2, P3
If your tariff is 2.0TD (the standard home tariff), you will see your consumption split into three periods:
| Period | Name | When |
|---|---|---|
| P1 | Punta (peak) | 10:00–14:00 and 18:00–22:00 on weekdays |
| P2 | Llano (standard) | 08:00–10:00, 14:00–18:00 and 22:00–24:00 on weekdays |
| P3 | Valle (off-peak) | 00:00–08:00 on weekdays, and all day at weekends and on holidays |
If you see six periods (P1 to P6) instead of three, your supply is not a home tariff: you are on a business or high-voltage tariff, and the analysis is different.
The taxes
- Impuesto eléctrico (electricity tax): applied to the sum of power and energy.
- IVA (VAT): applied at the end, on everything above including the electricity tax and the meter rental.
The rates have changed several times in recent years because of temporary government measures, so check the one shown on your own bill rather than assuming a percentage.
Meter rental
A small regulated amount, a few euros a month at most, paid to the distributor for the metering equipment. It is legitimate and does not depend on the supplier you choose. It is only avoided if you own the meter.
The lines worth watching
This is where the charges you can remove appear:
- Maintenance services or "protection plans": between 5 and 12 euros a month for cover that often duplicates your home insurance.
- Insurance added to the electricity contract.
- Management or supply fees that not every company charges.
- Excess power charges, if you regularly go over your contracted power. They appear as a separate line and are a sign the contract needs reviewing.
A five-minute exercise
Take your latest bill and find these five things:
- Your contracted power, in kW.
- Your total consumption for the period, in kWh.
- The price you pay per kWh in each period.
- The total amount of the power term.
- Any line you cannot identify.
With those five you can already tell whether you are overpaying and by how much. The rest is comparing.
Frequently asked questions
What is the término de potencia on a Spanish electricity bill?
It is the fixed part: what you pay to have electricity available, calculated per contracted kilowatt and per day. It is charged even if you use nothing.
What is the CUPS code?
It is the code that uniquely identifies your supply point. It starts with ES, appears on your bill and does not change when you change company.
What are periods P1, P2 and P3?
They are the time bands of the 2.0TD home tariff: peak (punta), standard (llano) and off-peak (valle). Each has a different price per kWh.
Can I avoid paying meter rental in Spain?
Only if you own the meter. It is a regulated amount paid to the distributor, not to the supplier.
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