Calculateur de Batterie Solaire — Espagne

Spain has experienced an extraordinary solar boom since the 2019 repeal of the “sun tax” (impuesto al sol). With electricity rates among the highest in Europe at ~$0.282/kWh, solar self-consumption has become one of the best investments available to Spanish households. The country receives 4.6 kWh/m² of daily solar irradiance — the best of any continental European nation — with Andalusia and Extremadura regularly exceeding 5.0 kWh/m².

The autoconsumo (net metering) framework is exceptionally favorable. Under Royal Decree 244/2019, households can offset their consumption at near-retail rates and receive compensation for surplus energy fed back to the grid. Installation costs have dropped significantly as the installer network has matured, and the payback period for a typical 5-7 kW system is now 5-8 years — dramatically shorter than most European countries.

Key advantage: Spain's combination of high retail electricity prices, exceptional solar resource, and pro-solar regulation creates one of the best solar investment climates in the world. Battery storage allows you to maximize self-consumption and protect against future rate increases from major suppliers like Iberdrola, Endesa, and Naturgy.