
The batería doméstica market is growing rapidly. In this buying guide, we help you step by step towards the batería doméstica that suits your home, consumption and budget — independent and honest.
Your reason for purchasing determines which type of battery is the best fit. The three most common reasons:
You have paneles solares and want to inyectar as little electricity to the grid as possible. Especially relevant now that the compensación neta scheme ends in 2027. You are looking for a battery with enough capacity to store your daily surplus.
Important: Choose at least 5 kWh, preferably 10 kWh. Focus on eficiencia de carga and the number of ciclos.
You want to be less dependent on the grid and keep your most important appliances running during a corte de energía. Pay attention to whether the battery has a función UPS or backup function.
Important: Not all batteries offer alimentación de respaldo. Check whether the system has an automatic switchover and how much power (Watt) it can deliver during an outage.
You have a contrato de energía dinámico and want to smartly charge the battery when electricity is cheap and discharge when the price is high. This requires a battery with control inteligente and a connection to your proveedor de energía.
Important: Choose a system that supports IFTTT, Home Assistant or its own smart charging strategy.
The capacity of a batería doméstica is expressed in kilovatios-hora (kWh). Rules of thumb:
| Situación | Capacidad recomendada | Excedente diario estimado |
|---|---|---|
| Small house, 6-8 panels, 2 persons | 5 kWh | 3-5 kWh |
| Average house, 10-14 panels, 3-4 persons | 10 kWh | 6-10 kWh |
| Large house, 16+ panels, bomba de calor or cargador de VE | 15-20 kWh | 10-15 kWh |
| Maximum autosuficiencia, large system | 20-30 kWh | 15+ kWh |
Tip: An oversized battery is not cost-effective — you won't fill it daily. An undersized battery leaves money on the table. The sweet spot for most hogares is 10 kWh.
There are two main types of baterías domésticas:
| Característica | Plug & play | Instalación fija |
|---|---|---|
| Costes de instalación | €0 | €300-800 |
| Max. power | 800-2,000W | 3,000-10,000W |
| Alimentación de respaldo | Limited (UPS via socket) | Full (whole house) |
| Capacity | 1-24 kWh | 5-30+ kWh |
| Flexibility | High (portable) | Low (fixed) |
| Price per kWh | €300-500 | €400-700 |
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How much energy the battery can store. Note: the capacidad utilizable is sometimes lower than the nominal capacity. A 10 kWh battery with 90% DoD (Profundidad de Descarga) effectively delivers 9 kWh.
How fast the battery can carga y descarga. A battery with 3.5 kW power can deliver a maximum of 3,500 Watt at once. Important if you have a bomba de calor or induction hob.
A cycle is one complete carga y descarga. Most baterías domésticas offer 6,000-10,000 ciclos. With daily use, that is 16-27 years. Choose a minimum of 6,000 ciclos.
Advice: Always choose LFP for home storage. All major brands have switched to LFP technology.
Look at both the duration (years) and the capacity garantía (e.g. 70% remaining capacity after 10 years). Market standard:
At Home Energy Solutions, we are not a representative of a single brand. We sell Anker SOLIX, EcoFlow, Zendure, Huawei and many other brands. Nuestro consejo is based on what suits your situation — not on which brand gives us the highest margin.
Ver nuestra complete range or get in touch for personal advice.
There is no universally "best" batería doméstica. The best choice depends on your situation. For most hogares with paneles solares and average consumption, a 10 kWh LFP battery with control inteligente offers the best balance between price and performance.
Prices range from €999 for a compact plug & play unit to €8,000-12,000 for a large instalación fija system. On average, you pay €300-500 per kWh of capacidad de almacenamiento. Prices have dropped 15-20% in 2025-2026 compared to 2024.
Not for plug & play systems — you connect them yourself to a power socket. For instalación fija systems, you need a instalador certificado who connects the battery to your cuadro eléctrico. Budget €300-800 for costes de instalación.
Most modern baterías domésticas are modular and ampliable. Do check in advance whether the brand offers ampliación modules and what the maximum system capacity is. Anker SOLIX X1 is ampliable to 180 kWh, ZinVolt Base to 24 kWh.
Yes, if you connect the batería doméstica to a panel solar system, you can reclaim the 21% IVA from the tax authority as a private individual. This applies to both plug & play and instalación fija systems.
Patrick
Founder & certified energy advisor
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