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Fixed vs variable electricity tariffs in Spain

Electricity tariffs in Spain are usually fixed or variable.

Understanding the difference helps you choose a tariff that matches your risk tolerance and usage habits.

What a fixed electricity tariff means

A fixed tariff charges the same price per kWh for a set period.

Benefits

  • Predictable bills
  • Protection from price swings

Drawbacks

  • Missing out on cheaper periods
  • Less flexibility

What a variable electricity tariff means

A variable tariff changes price based on market conditions.

Benefits

  • Access to cheaper energy when prices fall
  • Better alignment with solar-heavy periods

Drawbacks

  • Less predictability
  • Prices can rise unexpectedly

Which option suits you best

The best choice depends on:

  • How flexible your usage is
  • Whether you use electricity during the day
  • Your tolerance for price changes

Analysing your bill helps determine which option suits you.

To understand why bills rise and fall, it helps to know how electricity prices work in Spain. Read our full guide.

Unsure which plan is right for you?

Upload your electricity bill and we will advise which tariff type fits your usage.

Upload your electricity bill

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Frequently Asked Questions

Er fastpris tryggere?

De gir mer stabilitet fordi prisen din per kWh ikke endres, noe som beskytter deg mot plutselige topper i markedet. Imidlertid kan de være dyrere hvis markedsprisene faller betydelig.

Sparer man alltid penger med variable tariffer?

Ikke alltid. Selv om de lar deg dra nytte av lave markedspriser (ofte i helger eller på solfylte dager), er du også utsatt for høye priser i perioder med stor etterspørsel eller lav fornybar produksjon.

Kan jeg bytte mellom tariff-typer?

Ja, du kan vanligvis bytte. Noen fastpriskontrakter har imidlertid en bindingstid (permanencia) som kan føre til gebyr hvis du bryter kontrakten tidlig. Variable tariffer har sjelden gebyrer.