Bluesun 660W N-type TOPCon bifacial solar panel offers 645–665W power output and module efficiency up to 24.62%. Designed for commercial rooftops and ground-mounted solar projects, it features strong PID resistance, reliable performance in harsh environments and low annual degradation.
645–665W power range with module efficiency up to 24.62%, helping reduce BOS cost and improve project value.
Low power temperature coefficient of -0.29%/°C helps maintain stable output under hot operating conditions.
Bifacial design captures additional rear-side irradiation, increasing total energy yield depending on installation conditions.
30-year linear power warranty with annual degradation of no more than 0.4% supports reliable long-term operation.
N-type solar technology offers higher efficiency, lower degradation, and better long-term performance compared with conventional P-type modules.
| Comparison Item | N-type TOPCon | Conventional P-type |
|---|---|---|
| Cell Efficiency | Higher conversion efficiency | Relatively lower efficiency |
| Power Output | Higher module wattage potential | Lower output under the same module size |
| Degradation | Lower first-year and annual degradation | Higher degradation over time |
| Temperature Performance | Better performance in hot climates | Less stable under high temperatures |
| Bifacial Gain | Better rear-side power generation potential | Usually lower bifacial performance |
| Energy Yield | Higher lifetime energy generation | Lower long-term yield |
| LCOE | More competitive long-term cost per kWh | Higher lifetime system cost |
| Project Value | More suitable for utility and C&I projects | Suitable for cost-sensitive conventional projects |
For commercial and utility-scale projects, N-type TOPCon modules provide better long-term returns through higher efficiency, lower degradation, and improved energy yield.
Detailed mechanical dimensions and electrical characteristics for 645W–665W N-type TOPCon bifacial solar modules.
Mechanical dimensions and mounting details (Unit: mm)
| 模組類型 | BSM645G12-60HNH | BSM650G12-60HNH | BSM655G12-60HNH | BSM660G12-60HNH | BSM665G12-60HNH | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| STC | NMOT | STC | NMOT | STC | NMOT | STC | NMOT | STC | NMOT | ||
| Maximum Power | (Pmax/W) | 645 | 489 | 650 | 493 | 655 | 497 | 660 | 501 | 665 | 505 |
| Operating Voltage | (Vmp/V) | 43.36 | 40.97 | 43.49 | 41.14 | 43.62 | 41.31 | 43.75 | 41.48 | 43.88 | 41.65 |
| Operating Current | (Imp/A) | 14.88 | 11.94 | 14.95 | 11.98 | 15.02 | 12.03 | 15.09 | 12.08 | 15.15 | 12.12 |
| Open-Circuit Voltage | (Voc/V) | 53.02 | 50.40 | 53.22 | 50.59 | 53.42 | 50.78 | 53.62 | 50.97 | 53.82 | 51.16 |
| Short-Circuit Current | (Isc/A) | 15.47 | 12.59 | 15.53 | 12.65 | 15.59 | 12.71 | 15.65 | 12.77 | 15.71 | 12.83 |
| 模組效率 | ηm(%) | 23.88 | 24.06 | 24.25 | 24.43 | 24.62 | |||||
See how Bluesun high-efficiency TOPCon solar panels are applied in real photovoltaic power plant projects.
A real project example showing the installation and application of Bluesun high-power solar modules.
Common questions about the BSM660G12-60HNH 660W N-type TOPCon bifacial module, including efficiency, bifacial performance, applications, temperature performance, and long-term reliability.
The BSM660G12-60HNH has a rated power output of 660W and a module efficiency of 24.43% under STC conditions. The full HEX 7 series covers 645W to 665W, with module efficiency reaching up to 24.62% on the 665W model.
The module combines high power output, N-type TOPCon cell technology and bifacial design. Its main advantages include up to 24.43% efficiency for the 660W model, rear-side energy generation, low annual degradation, strong PID resistance and reliable performance in demanding outdoor environments.
Yes. The 645–665W HEX 7 series is designed for high-power solar applications and is suitable for commercial rooftops and ground-mounted solar power plants. The higher module power can help reduce the number of modules, mounting components and electrical connections required for a given project capacity.
The bifacial design allows the module to generate electricity from both the front and rear sides. Rear-side gain depends on installation conditions such as ground reflectivity, module height, tilt angle and row spacing. In suitable installations, this can increase total project energy yield compared with front-side generation alone.
The module has a Pmax temperature coefficient of -0.29%/°C. This means power output decreases as cell temperature rises, but the relatively low coefficient helps maintain more stable performance in hot operating conditions.
Bluesun specifies annual degradation of no more than 0.4% over 30 years under its linear power performance warranty. This supports more stable long-term energy production for commercial and utility-scale projects.
The module is rated for snow loads up to 5400Pa and wind loads up to 2400Pa, making it suitable for a wide range of rooftop and ground-mounted installation environments.
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