Solar Panel Batteries – Prices & Selection 2026
Photovoltaic Batteries – Prices & Selection 2026
LiFePO4, prices, capacity & free consultation for your system
🔋 Why Add a Battery to Your Photovoltaic System?
A storage battery allows you to store the electricity you produce during the day and use it at night or when the sun isn't shining. The result: greater self-sufficiency, protection from power outages, and a reduced electricity bill.
⚡ Types of Batteries for Photovoltaic Systems
| Type | Capacity | Lifespan | Price/kWh |
|---|---|---|---|
| LiFePO4 ✅ | 5–20 kWh | 3,000–6,000 cycles | €800–1,500 |
| Lead-acid | 2–10 kWh | 500–1,200 cycles | €200–500 |
| Lithium NMC | 5–30 kWh | 2,000–4,000 cycles | €600–1,200 |
💡 We recommend LiFePO4 for residential installations due to safety and longevity.
💰 Battery Prices in Greece (2026)
| Capacity | LiFePO4 Price | With installation |
|---|---|---|
| 5 kWh | €4,000 – €6,000 | €5,500 – €8,000 |
| 10 kWh | €7,000 – €12,000 | €9,000 – €15,000 |
| 15 kWh | €10,000 – €18,000 | €13,000 – €22,000 |
| 20 kWh | €14,000 – €24,000 | €18,000 – €30,000 |
📊 How Much Capacity Do I Need?
The battery should cover 4–6 hours of consumption after sunset:
- Consumption 300–500 kWh/month → 5–10 kWh battery
- Consumption 500–800 kWh/month → 10–15 kWh battery
- Off-grid system → 15–20+ kWh battery
✅ LiFePO4 – Why Is It the Best Choice?
- ✅ 3,000–6,000 charge cycles (10–15 years)
- ✅ Safe chemical composition — no overheating risk
- ✅ 80–90% efficiency at deep discharge
- ✅ Works well in high and low temperatures
- ✅ Compatible with Victron, Fronius, SMA, Huawei
⚡ Battery and Net Billing
With a battery, you store the electricity you don't consume instead of selling it to the grid at a low price. This significantly increases system efficiency.
❓ Frequently Asked Questions
How much does a 10 kWh battery cost?
A 10 kWh LiFePO4 battery typically costs €7,000–12,000 including installation.
How long does a LiFePO4 battery last?
10–15 years with normal use (3,000–6,000 charge/discharge cycles).
Can I add a battery to my existing system?
Yes, provided your inverter is hybrid. If it's a string inverter, replacement will be necessary.
Is a lithium battery safe for home use?
Yes. LiFePO4 batteries have one of the safest chemical compositions and are not at risk of overheating or fire.