Tongwei 625Wp TWMNH-66HD625W N-type Bifacial silver frame solar panel

Tongwei TWMNH-66HD625W bifacial N-type dual-glass solar panel

The Tongwei TWMNH-66HD625W is a high-performance, bifacial (double-sided) solar panel based on N-type technology, designed specifically for commercial and utility-scale systems. The combination of dual-glass construction and modern cell technology ensures high efficiency and a long service life.

What is it used for?

This panel is primarily ideal for larger systems, such as industrial rooftop projects or ground-mounted solar power plants.

Due to its bifacial design, it performs particularly well in environments where the back of the panel can also utilize reflected light—such as on a light-colored roof, gravel ground, or an elevated mounting structure.

How does it work?

The panel uses N-type half-cut technology, which results in higher efficiency and lower losses compared to traditional P-type panels.

Bifacial operation means that not only does the front side generate power, but the back side also contributes to the output. This can mean up to 5–25% extra yield, depending on installation conditions.

With a nominal power of 625 W and an efficiency of around 23%, this clearly falls into the high-power category.

Technical and system-level advantages

The dual-glass design provides greater mechanical stability and better weather resistance. This is particularly important for larger systems where long-term reliability is a key concern.

The panel can be used with system voltages of up to 1500 V, which reduces system costs for large projects.

Long-term performance is also backed by a linear warranty: it accounts for low annual degradation, ensuring stable production for decades.

SOLARKIT Reviews

The TWMNH-66HD625W is a typical modern utility panel: high performance, bifacial design, and long lifespan.

Its biggest advantage isn’t just its power output in watts, but the fact that, with proper installation, it generates more energy on the same surface area. This is especially important in large projects where every percentage point counts.

Overall, this is a good choice if you’re building a larger system and want to take advantage of bifacial technology.