TOPCon vs HJT Solar Panels — Premium N-Type Comparison
Both TOPCon and HJT are N-type solar cell technologies offering premium performance. HJT has higher efficiency potential but also higher cost.
| Metric | TOPCon | HJT |
|---|---|---|
| Efficiency | 22-24% | 23-25%+ |
| Temperature Coefficient | -0.30%/°C | -0.24%/°C |
| First-year Degradation | <1% | <0.5% |
| Annual Degradation | 0.35-0.4% | <0.25% |
| Bifacial Factor | 75-80% | 85-95% |
| Price ($/Wp FOB) | $0.10-0.14 | $0.13-0.18 |
| Manufacturing Cost | Moderate | Higher |
| Hot Climate Performance | Good | Excellent |
| Supplier Availability | Wide (50+) | Limited (~15) |
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Expert Verdict
TOPCon offers the best value — 90% of HJT's performance at 70-80% of the cost, with much wider supplier choice. HJT is only worth the premium for space-constrained premium installations or extreme climates. For most 2026 projects: choose TOPCon.
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