Battery storage · Spain
Batteries for homes and businesses in Spain: 2026 prices
Home batteries from €3,500 turnkey (VAT included); business storage €200–350 per kWh excl. VAT. Prices as of 4 October 2026, by size:
Free. A few questions, then a plan with sizes, prices and payback.
Home batteries
Storage for business
| Size | Power | Turnkey price | Per kWh | Backup |
|---|---|---|---|---|
| 100 kWh | 50 kW | €26,000–35,000 | €260–350 | 1.7 h at full power |
| 250 kWh | 125 kW | €55,000–80,000 | €220–320 | 1.7 h at full power |
| 500 kWh | 250 kW | €110,000–160,000 | €220–320 | 1.7 h at full power |
| 1 MWh | 500 kW | €220,000–320,000 | €220–320 | 1.7 h at full power |
| 2 MWh | 1 MW | €400,000–560,000 | €200–280 | 1.7 h at full power |
The market
- Spain installed 540 MWh of batteries behind the meter in 2025 (+65%); 61% of new home solar systems came with a battery. (SmartGridsInfo (UNEF), 12 June 2026)
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)
- RDL 7/2026 gives storage flexible grid access and free depreciation up to €500,000 a year; RD 88/2026 lets behind-the-meter batteries join balancing markets through an independent aggregator (operating rules still being drafted). (AEE (RDL 7/2026), 20 March 2026)
Loans, grants and tax relief
- Many towns give IBI and ICIO bonuses for self-consumption: your plan lists the ones at your address.
- Free depreciation of the investment up to €500,000 a year (RDL 7/2026). (AEE (RDL 7/2026), 20 March 2026)
- IDAE storage funds go to large stand-alone projects, not to company batteries.
Questions
How much does a 10 kWh battery cost in Spain?
€7,000–11,000 turnkey (€700–1,100 per kWh, VAT included) as of 4 October 2026: LFP battery, a 5 kW hybrid inverter, installation and set-up. Solar panels are extra.
How much does a 1 MWh battery cost in Spain?
€220,000–320,000 turnkey excl. VAT (€220–320 per kWh) as of 4 October 2026: battery cabinets or container, PCS, EMS, installation and commissioning. Transformer, fire suppression, foundation and the connection fee are priced per site.
MW or MWh: what is the difference?
MW is power (how much the system delivers at a moment), MWh is the energy stored. 1 MWh / 500 kW runs about 1.7 h at full power. The business standard is 2 hours: 1 MW / 2 MWh. Always compare both numbers.
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. RDL 7/2026 gives storage flexible grid access and free depreciation up to €500,000 a year; RD 88/2026 lets behind-the-meter batteries join balancing markets through an independent aggregator (operating rules still being drafted).