Solar Panel Types: Which One to Choose
Before buying solar panels, understand the three main technologies. Each suits different conditions and budgets.
Monocrystalline Panels
Efficiency 20–23% — highest among mainstream options. Compact, perform well in diffuse light, last 25–30 years.
Polycrystalline Panels
10–15% cheaper than monocrystalline. Efficiency 16–18%. Best for large roofs.
Thin-Film Panels
Efficiency 10–14%. Handle partial shading best. Rarely optimal for standard homes.
Panel Wattage: 400 W, 500 W, or 600 W
- 400 W — for systems up to 10 kW.
- 500 W — optimal balance of size and power.
- 600 W — for 15+ kW systems. Lowest cost per watt.
How Many Panels You Need
| System | 400 W | 500 W | 600 W | Roof area |
|---|---|---|---|---|
| 5 kW | 13–14 | 11 | 9 | 20–25 m² |
| 10 kW | 26–28 | 21–22 | 17–18 | 40–50 m² |
| 15 kW | 40–42 | 31–32 | 26–27 | 60–75 m² |
Bifacial Panels
Generate power from both sides. 5–15% output gain. Worth it on flat roofs with light coating.
What Else You Need
- Hybrid inverters — convert DC to AC, manage battery charging.
- LiFePO4 batteries — store surplus energy for nighttime use.
Where to Buy
The solar panels catalogue on Chastotnik.ua features 400–600 W panels. Delivery across Ukraine via Nova Poshta.
