---
title: "5 kWh battery for solar panels in Spain: 2026 installed price"
description: "What a 5 kWh battery for solar panels costs installed in Spain in 2026 (€3,500–5,500 with VAT), how long it powers a house in a blackout, whether it pays back and the IRPF deduction."
url: https://solarplan.app/solar/spain/storage/5-kwh
country: ES
language: en
updated: 2026-10-04
---

# 5 kWh battery for solar panels in Spain: 2026 installed price

> A 5 kWh home battery costs €3,500–5,500 turnkey in Spain (€700–1,100 per kWh, VAT included, prices of 4 October 2026). Full, it keeps the essentials (0.4 kW: router, lights, fridge, boiler pump) running for about 11 h.

_Prices as of 4 October 2026_

- [Plan a battery for my home](https://solarplan.app/plan/new?segment=home&region=ES&need=solar_storage)
- [Get offers from installers](https://solarplan.app/plan/new?segment=home&region=ES&intent=request&need=solar_storage)

- **Turnkey price:** €3,500–5,500 (vAT included)
- **Per kWh:** €700–1,100 (battery, inverter and installation)
- **Backup:** 11 h (essentials, 0.4 kW)
- **Payback:** 15 years (with 4 kW of solar)

## What it powers and for how long

Hours a full 5 kWh battery keeps these loads running in an outage (usable 4.5 kWh, 90% efficiency):

| Load | Hours |
| --- | --- |
| Essentials: router, lights, fridge, gas-boiler pump (0.4 kW) | 11 h |
| Essentials + water pump and washing machine (1.0 kW) | 4.3 h |
| Most of the house, without electric cooking and water heating (2.0 kW) | 2.1 h |

## Price and what it includes

- **Turnkey price:** €3,500–5,500 (vAT included)
- **Per kWh:** €700–1,100
- **Prices as of:** 4 October 2026

Included: LFP battery modules, a hybrid inverter of 3.6 kW, installation and set-up. Solar panels are priced separately.

## Payback

A battery alone saves about €110 a year on the 2.0TD tariff: no payback within its 15-year life.

With 4 kW of solar the whole system (€8,300–9,900) pays back in about 15 years; without the battery, 10 years.

Most Spanish homes buy a battery for independence and backup: 61% of new home solar systems in 2025 came with one. ([SmartGridsInfo (UNEF), 12 June 2026](https://www.smartgridsinfo.es/2026/06/12/aumenta-65-instalacion-baterias-autoconsumo-2025-segun-unef))

**Assumptions:**

- A house using 5,300 kWh a year, Madrid; 2.0TD tariff periods; 90% efficiency, 15-year life, VAT included, no grants.

## Rules

- A battery is part of the self-consumption installation, with no separate licence. Royal Decree-law 7/2026 lets you deduct 10% of 2026 spending on it from IRPF, up to €500, if the installation is finished and paid for in 2026. ([AEE (RDL 7/2026), 20 March 2026](https://aeeolica.org/en/resumen-del-rdl-7-2026-de-20-de-marzo-por-el-que-se-aprueba-el-plan-integral-de-respuesta-a-la-crisis-en-oriente-medio/))

## Loans, grants and tax relief

- Many towns give IBI and ICIO bonuses for self-consumption: your plan lists the ones at your address.

## Questions

### How much does a 5 kWh battery cost in Spain?

€3,500–5,500 turnkey (€700–1,100 per kWh, VAT included) as of 4 October 2026: LFP battery, a 3.6 kW hybrid inverter, installation and set-up. Solar panels are extra.

### How many hours of backup does a 5 kWh battery give?

A full battery runs the essentials (0.4 kW) for about 11 h, 1.0 kW for about 4.3 h and 2.0 kW for about 2.1 h.

### Does a 5 kWh battery pay back?

A battery alone saves about €110 a year on the 2.0TD tariff: no payback within its 15-year life. With 4 kW of solar the whole system (€8,300–9,900) pays back in about 15 years; without the battery, 10 years.

### Is a licence or permit needed?

A battery is part of the self-consumption installation, with no separate licence. Royal Decree-law 7/2026 lets you deduct 10% of 2026 spending on it from IRPF, up to €500, if the installation is finished and paid for in 2026.

### Which loans, grants or tax relief apply?

Many towns give IBI and ICIO bonuses for self-consumption: your plan lists the ones at your address.

## Other sizes

- [10 kWh](https://solarplan.app/solar/spain/storage/10-kwh)
- [15 kWh](https://solarplan.app/solar/spain/storage/15-kwh)
- [100 kWh / 50 kW](https://solarplan.app/solar/spain/storage/business-100-kwh)
- [All battery sizes](https://solarplan.app/solar/spain/storage)
- [Storage price index](https://solarplan.app/storage-price-index)

## Where these numbers come from

SolarPlan's storage engine, the same one that prices every battery plan: turnkey price bands of 4 October 2026, an hourly model of a typical day and the stated assumptions. Model figures, not a quote.