Best Solar Battery for Home — Europe 2026
A home battery completes your solar investment. Without storage, you export surplus power at low feed-in tariff rates and buy it back at full retail — often paying 3–5× more. Compare 5 home batteries available in Europe by chemistry, capacity, cycle life, and price.
Largest Capacity
LG Chem
RESU16H Prime
14.4 kWh usable · NMC
Most Cycles
Sonnen
Eco 10
10,000 cycles · 10-yr warranty
Best Efficiency
BYD
Battery-Box Premium HVS 10.2
97% round-trip efficiency
| Battery | Chemistry | Usable Capacity↓ | Cont. Power↕ | Efficiency↕ | Cycle Life↕ | Warranty↕ | Price↕ |
|---|---|---|---|---|---|---|---|
LG Chem RESU16H Prime | NMC | 14.4 kWh | 7 kW | 91% | 4,000 | 10 yrs | €9,200 |
Tesla Powerwall 3 | LFP | 13.5 kWh | 11.5 kW | 89% | 4,000 | 10 yrs | €10,800 |
BYD Battery-Box Premium HVS 10.2 | LFP | 10.2 kWh | 5 kW | 97% | 6,000 | 10 yrs | €6,800 |
Sonnen Eco 10 | LFP | 10 kWh | 3.3 kW | 86% | 10,000 | 10 yrs | €12,200 |
Enphase IQ Battery 5P | LFP | 4.96 kWh | 3.84 kW | 89% | 4,000 | 15 yrs | €4,200 |
LFP (Lithium Iron Phosphate)
- ✓ Safer chemistry — does not thermal-runaway
- ✓ Longer cycle life (3,000–6,000+ cycles)
- ✓ Better performance in high temperatures
- ✓ Can be fully discharged without damage
- ✗ Lower energy density — physically larger per kWh
Best for: most residential use cases
NMC (Nickel Manganese Cobalt)
- ✓ Higher energy density — more kWh per volume
- ✓ Better for space-constrained installations
- ✓ Good low-temperature performance
- ✗ Shorter cycle life (typically 2,000–3,000 cycles)
- ✗ Higher risk of thermal runaway if damaged
Best for: space-limited homes, mobile applications
FAQs
How many kWh do I need for overnight battery backup in Europe?
A typical European home uses 10–15 kWh/day (lower than the US due to smaller homes and higher efficiency standards). For overnight backup (6pm–8am), you'd need 6–12 kWh of usable capacity. Most home batteries are 10–20 kWh — one battery covers the average European home for one night.
Do home batteries qualify for incentives in Europe?
Yes, in several countries. Germany's KfW 270 loan covers battery storage alongside solar. Italy's Superbonus includes battery storage. Several countries offer 0% VAT on battery installations. Check our country incentives pages for up-to-date regional programmes.
What's the difference between capacity and usable capacity?
Total capacity is the battery's full storage. Usable capacity is how much you can actually use — most batteries keep 5–10% in reserve to protect battery chemistry. Always compare usable capacity, not total.