La Puissance Souscrite Expliquée (Potencia)
Comprendre la puissance souscrite en Espagne pour réduire vos factures fixes.

If you live in Spain and receive an electricity bill, you’ll see two main charges every month:
- Energy consumption (kWh used)
- Puissance (Potencia) (contracted power)
Most people focus only on the energy price per kWh. That’s understandable. It feels logical. The more electricity you use, the more you pay.
But in many homes, potencia is one of the most misunderstood — and often overpaid — parts of the bill.
Let’s break it down properly.
What Is Puissance (Potencia)?
Potencia, or potencia contratada, is the maximum electrical power your property is allowed to draw at any one time.
It is measured in kilowatts (kW).
Why Does Potencia Exist?
The electricity grid must be able to supply enough power to your home at any moment.
Your contracted potencia ensures the system remains stable.
How Potencia Is Charged on Your Bill
Potencia is billed daily, not based on consumption.
Contracted kW × daily rate × number of days in billing period
Final Thought
Understanding potencia puts you in control of the structural part of your bill. Stop guessing and start calculating.
