Trina Solar
Vertex S+ 445W N-Type Full Black
Trina's current-generation N-type TOPCon in all-black dual glass. 445W, 25-year warranty.
£99.98 per panel
How it scores
Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.
Specifications
- Cell type
- TOPCon N-type
- Watt peak
- 445
- Weight kg
- 22
- Dimensions mm
- 1762x1134x30
- Efficiency %
- 21.9
- Degradation % years
- 0.4
- Warranty product years
- 25
- Warranty performance years
- 25
- Temperature coefficient %
- -0.3
What I noticed
Trina Solar is the world's largest solar panel manufacturer by shipped volume, and the Vertex S+ is their current-generation N-type TOPCon residential module. The full-black dual-glass construction — black cells, black frame, black backsheet — gives a uniform premium aesthetic across the whole panel face with no visible silver busbars to break up the surface.
Dual tempered glass on both faces (replacing a traditional plastic backsheet) improves long-term durability significantly: dual-glass panels typically outlast single-glass equivalents by several years in field studies, making the 25-year warranty more meaningful. N-type TOPCon cells degrade at roughly 0.40%/year versus 0.55%/year for PERC — the compound difference over a 25-year warranty period is meaningful real-world generation.
Who it suits
Homeowners who want a balanced combination of current technology, strong aesthetics, and a well-recognised brand name. Trina's global market position means installer familiarity is high and warranty support infrastructure is solid. The all-black finish works well on dark or tiled roofs where a uniform look is a priority.
What I'd watch for
The Vertex S+ range includes multiple variants — confirm with your installer that you're getting the N-type version (not the older PERC Vertex S). The 445W full-black variant runs at a modest premium over the black/white version with identical underlying specs.
