Top Solar Technologies of 2025: HJT, TOPCon & Bifacial Panels Explained | SolSetu
Published on: November 3, 2025
Top Solar Technologies of 2025: HJT, TOPCon & Bifacial Panels Explained
In 2025, high-efficiency panel technologies such as Heterojunction (HJT), Tunnel Oxide Passivated Contact (TOPCon), and Bifacial modules are setting new benchmarks in solar performance. Whether you’re a solar vendor, EPC contractor, or a homeowner planning an installation, understanding these technologies helps you make smarter, future-proof choices.
1️⃣ HJT (Heterojunction Technology)
Overview: HJT panels combine crystalline silicon with thin-film amorphous layers to capture more light and reduce electron loss.
- Higher efficiency (22–24%)
- Excellent high-temperature performance
- Bifaciality up to 90%
- Low degradation (<0.25%/year)
Why it matters in India: Handles heat efficiently, ideal for rooftops and commercial sites.
2️⃣ TOPCon (Tunnel Oxide Passivated Contact)
Overview: Adds oxide and polysilicon layers, improving efficiency beyond PERC without major cost increase.
- 0.5–1% higher efficiency than PERC
- Stable and cost-effective
- Easy upgrade for vendors
Market Trend 2025: 60% of new module production is TOPCon-based.
3️⃣ Bifacial Modules
Overview: Capture sunlight on both sides, improving yield by 10–30%.
- Best for open-ground & commercial rooftops
- Increased ROI via rear-side reflection
- Works well with trackers
Comparison Table
| Technology | Efficiency | Temperature Performance | Cost Trend | Best For |
|---|---|---|---|---|
| HJT | 22–24% | Excellent | High | Premium rooftops |
| TOPCon | 21–23% | Very Good | Moderate | Residential & C&I |
| Bifacial | 19–22% | Very Good | Moderate | Open-ground projects |
Choosing the Right One
- Homeowners: HJT for top performance and longevity.
- Commercial clients: TOPCon for balance of cost & performance.
- Vendors: Offer all three to meet varied customer demands.
How SolSetu Helps
At SolSetu, we connect clients to vendors who use verified high-quality modules. Use our Get Bid from Solar Expert form to request quotes based on your preferred technology.
Ready to go solar with advanced technology?
Submit your requirement now and get bids from trusted vendors offering HJT, TOPCon, or Bifacial modules.
Conclusion
2025 marks the rise of next-gen solar panels. Whether you choose HJT, TOPCon, or Bifacial, partnering with trusted vendors ensures top performance and long-term savings. SolSetu is your solar bridge to innovation and trust.
Author: SolSetu Team | Tags: HJT, TOPCon, bifacial, solar technology India, SolSetu vendors
