Download Datasheet: SP EN-NtypeTBC-G11RA 72P

Sunpower 645Wp Back Contact Panel: The Pinnacle of Solar Efficiency Technology

In the race for green energy capacity and efficiency, the Sunpower 645Wp Back Contact Panel (Model: HSM-BD72-GC645) is setting a new industry standard. Manufactured by the TCL Group using exclusive Back Contact technology, this product not only features a prestigious aesthetic but also delivers extraordinary power generation capabilities. Join Tran Le Electricity as we explore the details of this world-class solar module.

1. Back Contact Technology – A Breakthrough in the Sunpower 645Wp Back Contact Panel

The most significant difference between the Sunpower 645Wp Panel and conventional modules is its rear-contact architecture. By moving the entire grid system (busbars) to the back of the cells, the front surface of the Sunpower 645Wp Back Contact Panel remains completely uniform. This design eliminates shading from metal ribbons and maximizes the light-absorption area.

Thanks to the N-type structure combined with the innovative design of the Sunpower 645Wp Back Contact Panel, the module achieves an impressive conversion efficiency of up to 23.9%. This figure is among the highest available on the market in 2026, allowing users to save maximum installation space while still harvesting a massive amount of electricity.

2. Durable and Aesthetic Bifacial Double Glass Design

The Sunpower 645Wp Back Contact Panel is not just powerful; it is also an architectural masterpiece. The Bifacial Double Glass structure provides a sophisticated, sleek look while enhancing the module’s structural integrity. Using two layers of tempered glass allows the Sunpower 645Wp Back Contact Panel to capture reflected light from the rear side, significantly boosting the total energy yield.

• Superior Durability: The Sunpower 645Wp Back Contact Panel offers excellent resistance against environmental stressors such as salt mist, ammonia, and micro-cracks.

• Optimized Weight: Despite its high-power output, the Sunpower 645Wp Panel weighs only 32.3kg. This helps reduce the mechanical load on the mounting rack system and the rooftop structure during installation.

3. Detailed Technical Specifications: Sunpower 645Wp Back Contact Panel

Below are the official technical specifications for the HSM-BD72-GC645 model, the core of the Sunpower 645Wp Back Contact Panel lineup distributed by Tran Le Electricity:

Technical Feature	Specification Details
Model	HSM-BD72-GC645
Rated Power (Pmax)	645Wp
Module Efficiency	23.9%
Cell Technology	N-type Back Contact
Dimensions	2382 × 1134 × 30 mm
Weight	32.3 kg
Structure	Bifacial Double Glass

The pricing for the Sunpower 645Wp Back Contact Panel at Tran Le Electricity is considered highly competitive, offering homeowners and businesses the chance to own the most advanced solar technology at a reasonable cost.

4. 30-Year Performance Warranty Commitment

One of the reasons customers place absolute trust in the Sunpower 645Wp Back Contact Panel is its long-term reliability. TCL Solar provides an extensive warranty policy that leads the industry:

• 15-Year Product Warranty: A commitment to the hardware quality and the sturdy frame of the Sunpower 645Wp Back Contact Panel.

• 30-Year Performance Warranty: Ensuring the system operates stably for three full decades.

• Ultra-Low Degradation Rate: In the first year, the Sunpower 645Wp Panel experiences only a 1% power drop. In subsequent years, the degradation rate is maintained at an industry-leading 0.35%, which is significantly lower than the standard 0.4% – 0.5%.

5. Why Choose to Buy the Sunpower 645Wp Back Contact Panel at Tran Le Electricity?

Tran Le Electricity is a leading provider of clean energy solutions in Vietnam. When choosing to install the Sunpower 645Wp Back Contact Panel with our team, you will receive:

• Authentic Products: 100% genuine modules with full CO and CQ certifications from TCL.

• Optimized Pricing: We guarantee the best market rates for projects and dealers for the Sunpower 645Wp Panel.

• Professional Consulting: Our engineers will help you calculate the perfect Inverter and Battery storage synchronization to match the massive output of the Sunpower 645Wp Panel.

Conclusion: If you are searching for a solar panel that converges top-tier technology, perfect aesthetics, and long-term economic benefits, the Sunpower 645Wp Back Contact Panel is the irreplaceable choice for your green energy transition.