Electricity cost calculator for Spain
Estimate appliance electricity cost in Spain using your own price per kWh. Spanish bills separate a fixed término de potencia from a variable término de energía, which can change hour by hour on PVPC — enter only the energy rate here.
How electricity is billed in Spain
Since 2021, Spanish households have been on the 2.0TD tariff, which prices contracted power and consumption in separate time bands. You can buy on the regulated PVPC tariff, where the energy price tracks the wholesale market hour by hour, or on a fixed-price free-market contract — the bill shape is the same either way.
Término de energía (energy term)
The variable charge per kWh consumed. On PVPC this changes every hour of the day; on a free-market fixed contract it is a single agreed rate. This is the figure this calculator needs.
Término de potencia (power term)
A fixed charge for the kW you contract, billed daily whether you use it or not, and can differ between peak and off-peak periods under 2.0TD. It stays constant regardless of appliance use, so it is excluded from this calculator by design.
Impuesto Eléctrico (electricity tax)
A national excise duty applied to the power-plus-energy subtotal before VAT, at a rate that has been temporarily reduced during past periods of high prices and can change again.
IVA (VAT)
Applied to the whole bill after the electricity tax. The standard rate applies by default, though a reduced rate has been used temporarily during energy-price spikes — check which applies to your current bill.
Using this calculator with your own bill
This tool needs one number: the variable price you pay per kilowatt-hour for the electricity itself. Fixed charges — standing charges, contracted-power fees, meter rental — stay the same no matter how long a single appliance runs, so they are deliberately excluded. Adding them would inflate the appliance's own cost rather than reflect it.
the CNMC regulates the network and system components of your bill, but does not set the energy price itself in a competitive market, so the number that matters for this calculator is always the one on your own contract or most recent statement — not a national headline figure, which can be months out of date by the time you read it.
Frequently asked questions
I'm on PVPC — which hourly price do I use?
Use the price for the hour band when the appliance actually runs: punta (peak), llano (shoulder) or valle (off-peak). For a device you can schedule overnight, the valle price will usually give the most realistic estimate.
Should the término de potencia go into this calculator?
No — it's a fixed daily charge for your contracted kW, unrelated to how long any single appliance runs, so including it would overstate that appliance's own cost.
Where do I find my current término de energía?
On PVPC, Red Eléctrica de España publishes the official hourly price; on a fixed free-market contract, it's the rate stated in your contract or on your latest factura.
Is the electricity tax rate fixed?
It is set by national policy and has been temporarily reduced during past periods of high energy prices, so don't assume today's rate matches an older figure you may remember — check your latest bill.
What's the difference between 2.0TD and older tariffs?
2.0TD, in place since 2021, splits both the power term and the energy term into time bands (peak, shoulder, off-peak) instead of charging a single flat rate around the clock, which is why the hour you use an appliance now genuinely changes its cost.
Can I have different contracted power for peak and off-peak?
Yes — 2.0TD allows two separate contracted power levels, one for the peak period and one for off-peak, each billed at its own término de potencia.
EuroWattCalc is an independent calculator site and is not an energy supplier, regulator or tariff-comparison service. Figures describing Spain's billing structure are provided for general orientation and can change; always confirm current rates with the Comisión Nacional de los Mercados y la Competencia (CNMC), which regulates network access charges, alongside Red Eléctrica de España (REE) which publishes the hourly PVPC price or your own supplier.
