Nine ways to lower your Spanish electricity bill without changing your habits

Most "save on electricity" advice on the internet assumes you're up for running the washing machine at 3am and switching the fridge off when you're away for the weekend. This guide isn't that.

This is about one-off adjustments — things you do once, that don't touch your day-to-day, and that bring your bill down steadily. Some save you €5 a month. Others save €30. Stacked, they usually move the number.

1. Adjust your contracted power to what your home actually uses

The number-one suspect. If your bill has a chunky power term and the breaker never trips, you're almost certainly contracted for more kW than you use.

Quick check, no maths: if your monthly bill has more fixed cost (power + associated taxes) than variable (energy + associated taxes), your contracted power is oversized for your consumption.

How to fix it: ask your retailer to lower your contracted power. It takes a few days or weeks. Your electricity isn't cut. Rough saving: the 2026 regulated peak-power charge is €30.97 per kW per year (CNMC, Circular 3/2020), plus the retailer's margin on top. Dropping 1 kW typically translates into €40-55 a year saved once you stack the regulated charge, retailer margin, electricity duty and VAT. Dropping 2 kW, double that.

Once it's done, you never think about it again.

2. Cancel any add-on services you don't use

Look at your last bill. Hunt for lines named things like "Mantenimiento Premium", "Asistencia Hogar", "Protección Eléctrica" — maintenance plans, home assistance, electrical protection. If you don't remember signing up and you haven't used it in the last year, drop it.

How: call your retailer and ask for that specific service to be cancelled. It doesn't change your electricity tariff — it cancels a separate subscription riding on the same bill. These typically cost €4-12 a month each. Annually, €50-150 per service.

3. Check whether you're stuck on a "legacy" tariff

If you've been with the same retailer for three or four years without ever reviewing the contract, there's a strong chance you're on a tariff that's no longer offered to new customers — and almost always has a higher €/kWh than what's on the market today.

How to spot it: look at the per-kWh price on your bill, by time band (P1, P2, P3). The current ranges for new free-market offers, taxes included (June 2026 sample): P1 €0.18-0.25, P2 €0.11-0.15, P3 €0.07-0.12 per kWh. If yours is clearly above any of those, you've found the problem.

How to fix it: ask your retailer to move you to a current tariff, or switch retailer entirely. Both are administrative paperwork. No power cut.

4. Check the VAT rate on your bill

The Spanish government has applied reduced VAT rates on residential electricity at various points in recent years, depending on the situation. The rate in force is published in the Official State Gazette (BOE). Retailers apply it automatically, but it's worth confirming.

As of today, residential electricity VAT is 21% (the standard rate under Law 37/1992). The temporary reductions to 10% and 5% during the 2021-2024 energy crisis have ended. If your bill applies a rate other than 21% without a current extension published in the BOE, it's likely a billing error and you have the right to claim.

5. Switch to electronic billing if you haven't

Some retailers apply a small discount or drop surcharges for paperless billing. It's not huge, but it's free. Check your contract.

6. If you qualify for the bono social and don't have it, apply for it

The bono social is a discount on PVPC for households classified as vulnerable or severely vulnerable. If you meet the criteria (income level, number of children, specific family situation) and don't have it applied, you're leaving money on the table.

How: apply through the website of any of the eight Comercializadoras de Referencia (the retailers authorised to offer PVPC). You have to meet the criteria and renew it periodically.

Current legal framework: Royal Decree 897/2017 as the baseline, with extraordinary measures in force under Royal Decree-Law 7/2026 and Royal Decree-Law 16/2025 (the so-called "social shield"). While those measures remain in force, the discounts on the energy term are:

• Vulnerable consumer: 42.5%.
• Severely vulnerable consumer: 57.5%.
• Consumer at risk of social exclusion: 100% covered, provided the remaining part is taken on by social services.

If the extraordinary measures aren't extended, the discounts revert to the baseline: 35% (vulnerable) and 50% (severely vulnerable).

Requirements:

• Supply on PVPC (via a COR) at your habitual residence.
• Contracted power ≤ 10 kW.
• Meet one of the MITECO vulnerability criteria (income, large-family status, pension, recognised disability).

Important: the bono social only applies to PVPC, never to free-market tariffs.

7. If you still have an old meter, ask for it to be replaced

Digital (remote-managed) meters have been the norm in the vast majority of Spanish homes since 2018, when the mass replacement plan regulated by Order ITC/3022/2007 and developed by Order IET/290/2012 ended. If for some reason you still have an analogue one, the distribution company has to replace it free of charge.

Why does it matter? Without a digital meter your consumption is billed on estimates, which generates big catch-up corrections later and prevents you from seeing your real hourly curve (which is what makes everything else above actually solvable).

8. Put older appliances on eco mode

You don't need to replace them. Most washing machines, dishwashers and ovens made in the last decade have an eco mode that lengthens the cycle but uses 20-40% less electricity. You don't change your routine — you press a different button once and it sticks.

One important exception: the fridge. It doesn't have an "eco mode" as such. What does help is setting the thermostat right (4°C in the fridge, -18°C in the freezer — no colder) and not standing there with the door open hunting for the yogurt.

9. And the most underrated: read your bill once a year

Ten minutes a year. Compare May's bill with the one from twelve months ago: has the €/kWh gone up for no reason? Any new services you didn't ask for? Is the contracted power still right? Is the VAT correct?

If you do this, you dodge most of the nasty surprises people only spot when it's too late. Ten minutes a year in exchange for avoiding €100-300 of overpayment annually in some cases. Hard to beat that effort-to-payoff ratio.

What we deliberately left out (and why)

• Running the washing machine at 3am. Saves you about €1 a month. Not worth changing how you live.
• Unplugging standby devices. Adds up to very little in most modern homes. More tradition than impact.
• Freezing through winter. That isn't saving, that's just going without. Different debate.
• Comparing your bill to your neighbour's. Different consumption, different home, different tariff. Pointless.

Frequently asked questions

How much can I save by combining several of these?

It depends on what your bill looks like now. A household with oversized contracted power, two unused add-on services and a legacy tariff can see drops of €200-400 a year just from applying the first three. An already-optimised household, much less.

Do I have to change retailer to do all of this?

No. Items 1, 2, 4, 5, 6, 7, 8 and 9 can all be done with your current retailer. Only number 3 (legacy tariff) may require switching — and sometimes you can just renegotiate the tariff inside the same company.

Which one usually has the biggest impact?

Adjusting contracted power + cancelling add-on services + reviewing a legacy tariff. Those three move the bill the most.

What if I don't know where to start?

Start with the bill. Read it slowly. If you'd rather we tell you what has room to improve, upload it. We'll tell you in a minute.

Does any of this work if I'm renting?

Yes. If the supply contract is in your name, all of it applies. If it's in the landlord's name, you'll need to discuss it with them — especially the contracted power change.

In short

You can lower your Spanish electricity bill without changing your habits. The adjustments that move the number most are the least glamorous: contracted power, sneaky add-on services, a tariff that quietly got old. Zero glamour, plenty of impact.

If you'd rather skip the homework, upload your bill. We'll tell you which items on this list actually apply to your case.