TOPCon and HJT are the two dominant N-type cell technologies replacing older PERC panels. TOPCon has become the mainstream high-efficiency choice, while HJT (heterojunction) is a premium technology with the highest real-world yield.
Head-to-Head Comparison
| Feature | TOPCon | HJT |
|---|---|---|
| Cell efficiency | ~25% | ~25.5%+ |
| Temperature coefficient | ~-0.30%/°C | ~-0.24%/°C (better) |
| Bifaciality | ~80% | ~90%+ |
| Manufacturing cost | Lower (mainstream) | Higher |
| Market maturity | Dominant in 2025/26 | Emerging premium |
| Best for | Best value high efficiency | Maximum yield, hot climates |