Compare Energy Tariffs in Spain

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What is an energy tariff in Spain?

An energy tariff (tarifa de luz o gas) is the contract that sets what you pay your electricity or gas retailer (comercializadora). In Spain a bill combines a power-capacity charge (término de potencia), a consumption charge (término de energía), taxes and a small distribution component. Households choose between the regulated tariff and a wide range of free-market plans with fixed or variable prices, some offering renewable-only or time-of-use pricing to suit different usage patterns.

How the Spanish market works

Spain separates the regulated market from the free market (mercado libre). The regulated tariff, the PVPC (Precio Voluntario para el Pequeño Consumidor), is available to homes with contracted power up to 10 kW and its price now blends spot and forward references to smooth volatility. In the free market, retailers such as Iberdrola, Endesa and Naturgy sell fixed-price or indexed plans. A distinctive feature is time bands (peak, flat, off-peak) that reward shifting usage to cheaper hours, which can noticeably lower a bill.

Benefits of choosing well

Fixed-price certainty — free-market fixed plans lock your rate, protecting against wholesale spikes.

Time-of-use savings — shifting heavy usage to off-peak hours can cut the consumption charge significantly.

Green options — many retailers offer certified renewable electricity, sometimes at no premium.

Right-sized power — trimming contracted kW to what you actually use lowers the standing charge.

How to choose

PVPC vs fixed — the regulated PVPC can be cheaper on average but varies hourly; a fixed plan trades that for predictability.

Right-size your power — the término de potencia is a standing charge, so avoid contracting more kW than you need.

Read past the discounts — introductory offers and bundled services can obscure the ongoing unit price.

Check the contract term — some fixed plans carry a commitment or penalty for leaving early.

Leading providers in Spain

Endesa, Iberdrola and Naturgy are the largest retailers, with EDP España, Repsol Luz, Holaluz, Factor Energía and Feníe Energía competing on price, renewables and service. Holaluz and Feníe emphasise green and cooperative models, while the majors bundle electricity, gas and services. The best plan depends on your consumption pattern, whether you want fixed or indexed pricing, and your interest in renewable sourcing. Because your physical distributor stays the same whichever retailer you pick, switching comercializadora is low-risk, so it is worth comparing offers whenever a fixed plan ends or a promotional discount expires.

What it costs

Total cost depends on your contracted power, consumption and the plan, so a single figure is misleading. The bill combines the standing power charge, the per-kWh energy charge, the electricity tax and VAT (IVA). Vulnerable households may qualify for the bono social, a government-funded discount. Comparing plans on both the power and energy components, not just headline discounts, gives the true picture of what you will pay.

Protections and regulation

The energy market is overseen by the CNMC and the Ministerio para la Transición Ecológica. The regulated PVPC tariff protects small consumers, and the bono social provides discounts to eligible low-income and vulnerable households. Retailers must give clear pricing and honour switching rights; you can change comercializadora without changing your physical connection, which stays with the regulated distributor.

Common questions

PVPC or free market? — PVPC can be cheaper on average but fluctuates; free-market fixed plans offer price certainty.

Can I switch supplier easily? — Yes; switching comercializadora is free and does not interrupt supply.

What is the bono social? — A regulated discount on the electricity bill for eligible vulnerable consumers.

How do time bands work? — Electricity is priced in peak, flat and off-peak periods, so running appliances off-peak saves money.

Energy Tariffs in Spain — FAQ